Copiar y Editar

3rd Year

Descripción

Instrumentation 3rd Year Apprentice
Brennan Brow
Test por Brennan Brow, actualizado hace más de 1 año
Brennan Brow
Creado por Brennan Brow hace más de 8 años
35
0
0

Resumen del Recurso

Pregunta 1

Pregunta
What is measured during a Rockwell Hardness Test?
Respuesta
  • Material
  • Depth
  • Density
  • Impact

Pregunta 2

Pregunta
Why do we ground both sides of the Magmeter?
Respuesta
  • To ensure equal voltage at both ends.
  • To eliminate zero shifts. (Charge)
  • It is industry standard
  • We don't

Pregunta 3

Pregunta
What is the difference between Coal and Methane (CH4) combustion?
Respuesta
  • One is a gas and one is a solid.
  • Methane does not require oxygen to burn
  • Methane combustions results in complete conversion to CO2.
  • Coal does not produce water.

Pregunta 4

Pregunta
What type of capacitance probe should be used in a conductive solution?
Respuesta
  • Insulated
  • Rigid
  • Flexible
  • Float

Pregunta 5

Pregunta
What is the maximum transmitter loop resistance (ohms)?
Respuesta
  • Infinite
  • 1 KOhm
  • 100 Ohm
  • 600 Ohm

Pregunta 6

Pregunta
What is kinematic viscosity equal to?
Respuesta
  • Kinematic Viscosity = Dynamic Viscosity / Density
  • Kinematic Viscosity = csT X Density
  • Kinematic Viscosity = Density / Mass
  • Kinematic Viscosity = Viscosity X Velocity

Pregunta 7

Pregunta
What is the difference between 2-Wire and 4-Wire transmitters?
Respuesta
  • 4 Wire contains additional information.
  • 4 Wire has both a digital an analog signal.
  • 4 Wire uses 2 Wires for power and 2 for transmitting. 2 Wire uses both wires for power and transmitting.
  • 2 Wire is the only method capable of HART

Pregunta 8

Pregunta
What is K Factor?
Respuesta
  • The amount of pulses per minute. F = Hz * P
  • The amount of water able to mass through the meter in one minute. (GPM)
  • The vendor set standard for flow through the meter.
  • The amount of pulses per minute. Q = F * 60/K

Pregunta 9

Pregunta
How is turbidity measured?
Respuesta
  • Reflection from a UV Source.
  • Scattering of light in a solution.
  • Absorbtion of light.
  • Ultrasonic waves absorbed.

Pregunta 10

Pregunta
What is Opacity?
Respuesta
  • Suspended solids.
  • A measure of translucence.
  • Absorption of light in a solution.
  • The ability of a fluid to conduct light.

Pregunta 11

Pregunta
What is a communication standard?
Respuesta
  • HART
  • Modbus
  • Foundation Fieldbus
  • All of the above

Pregunta 12

Pregunta
89. What’s the most accurate way of stating error?
Respuesta
  • % of reading.
  • Absolute units.
  • % of span.
  • % of Upper Range Value.

Pregunta 13

Pregunta
What happens when an atom loses/gains an electron?
Respuesta
  • Loses an electron becomes positive+, oxidation occurs Gains an electron becomes negative-, reduction occurs
  • Loses an electron becomes negative-, oxidation occurs Gains an electron becomes positive+, reduction occurs
  • Loses an electron becomes positive+, reduction occurs Gains an electron becomes negative-, oxidation occurs
  • Loses an electron becomes negative-, reduction occurs Gains an electron becomes positive+, oxidation occurs

Pregunta 14

Pregunta
What is the resolution calculation for DAC/ADC?
Respuesta
  • Calibrated Range - Error / Step
  • Calibrated Range / Span
  • Step / Span
  • Span / Step

Pregunta 15

Pregunta
What does a catalyst do?
Respuesta
  • Speeds up a chemical reaction.
  • Stabilizes a chemical reaction.
  • Stops a chemical reaction.
  • Used to measure the energy released from a chemical reaction.

Pregunta 16

Pregunta
What are the states of PH?
Respuesta
  • Ph > 7 Basic Ph < 7 Acidic Ph = 7 Neutral
  • Ph > 7 Acidic Ph < 7 Basic Ph = 7 Neutral
  • Ph > 7 Basic Ph < 7 Neutral Ph = 7 Base
  • Ph > 7 Solvent Ph < 7 Acidic Ph = 7 Neutral

Pregunta 17

Pregunta
What is the easiest way to calibrate a nuclear meter?
Respuesta
  • Open Shutter for full level. Close shutter for zero.
  • Open shutter for zero. Close shutter for full level.
  • Close shutter for full level. Guide source down the vessel wall between the detector and wall.
  • Nuclear meters do not require calibration.

Pregunta 18

Pregunta
How does ultrasonic level detection work?
Respuesta
  • A signal is transmitted down to the fluid and the amount of time it takes to return is inversely proportional to level.
  • The signal is transmitter across the tank and the reflection is inversely proportional to the level.
  • Multiple sensors are used to detect where the signal is strongest.
  • The amount of soundwave absorbed is proportional to the level in the tank.

Pregunta 19

Pregunta
What is doppler flow measurement?
Respuesta
  • Doppler is used to measure weather not flow.
  • The sensor emits sound @ a fequency. This is reflected back by matter in the stream.
  • Doppler works using radar to measure the flow profile from that we can infer the flow rate.
  • The sensor emits high frequency radiowaves based on the returned wavelengths we can determine flow.

Pregunta 20

Pregunta
What is the flow proportionality for Vortex meters?
Respuesta
  • The vorticies form is inversely proportional to the flow rate.
  • The vortex velocity is directly proportional to flow.
  • The vibrations on the sensor are directly proportional to the inlet flow rate.
  • The vorticies form is directly proportional to the flow rate.

Pregunta 21

Pregunta
What is included in regular Coriolis meter maintenance?
Respuesta
  • Meter should be returned to factory to be proven and refurbished.
  • Sensor replacement and a 3-point calibration.
  • Cleaning and a zero calibration.
  • All soft parts should be replaced and the meter should be spanned.

Pregunta 22

Pregunta
How does a DP Transmitter measure level?
Respuesta
  • Infers weight of water column
  • Directly measures weight of water column
  • Infers height of water column
  • Directly measures height of water column

Pregunta 23

Pregunta
What is solution concentration?
Respuesta
  • Mass / Volume = Concentration
  • Density / Volume = Mass
  • PPM= Volume / Particles
  • PPM = Particles / Mass

Pregunta 24

Pregunta
What is traceability?
Respuesta
  • The mark of an analyzer used to measure repeatability.
  • The ability to map measurement points.
  • Tracing a signal over a step change.
  • An unbroken chain of measurements.

Pregunta 25

Pregunta
What are the two most commonly monitored gases on a flue stack?
Respuesta
  • CO, O2
  • CO2, NOx
  • O2, NO
  • CO2, O2

Pregunta 26

Pregunta
Water and Natural Gas burning is an example of....
Respuesta
  • Bad practice.
  • A chemical reaction.
  • Hydro-combustion
  • An Endothermic reaction

Pregunta 27

Pregunta
Different gains in a process means
Respuesta
  • Hysterisis
  • Non-Linear Processes
  • Linear Processes
  • The process is under upset conditions

Pregunta 28

Pregunta
What is molar mass?
Respuesta
  • The weight of one mole.
  • The mass of an object in a molar solution.
  • The mass of one mole.
  • The mass of a solution in it's molar state.

Pregunta 29

Pregunta
Where should a particulate filter be placed in a sample system?
Respuesta
  • At the Inlet.
  • Before the analyzer or other sensitive components.
  • Within the fast loop.
  • On the outlet.

Pregunta 30

Pregunta
The bluff body is directly proportional to
Respuesta
  • Flow
  • Temperature
  • Pressure
  • Velocity

Pregunta 31

Pregunta
Why is pH hard to measure?
Respuesta
  • Measurement is calculated
  • Hard to control
  • Deadtime
  • pH is logarithmic.

Pregunta 32

Pregunta
Selective control is.....
Respuesta
  • is a process in which some condition is checked and a decision is made about whether a certain segment of the program code will execute.
  • is a process in which the FCE is only actuated when a number of criteria is met.
  • control that is based on a number of input variables.
  • The controller is selective of which responses are passed on to the loop.

Pregunta 33

Pregunta
A valve positioner can help provide important diagnostics like
Respuesta
  • Loop Gain
  • Valve Signature
  • Measurement Drift
  • The health of valve components

Pregunta 34

Pregunta
What is the standard calibration procedure?
Respuesta
  • Zero and Span.
  • Zero, Calibration Points, and Span.
  • Zero, Calibration Points, and Span. Repeat if necessary.
  • It depends on the instrument.

Pregunta 35

Pregunta
What is repeatability?
Respuesta
  • is the variation in measurements taken by a single person or instrument on the same item, under the same conditions, and in a short period of time.
  • measuring the same value over and over to see if the error is growing.
  • the ability of an instrument to repeat it's signal.
  • is the variation in measurements taken by a single person or instrument on the same item, under the same conditions, and in a long period of time.

Pregunta 36

Pregunta
What is Accuracy?
Respuesta
  • The difference between a true value and a measured value.
  • The measure of the difference between an input and output values.
  • The ability of the measurement to meet the input value.
  • The degree to which the result of a measurement, calculation, or specification conforms to the correct value or a standard.

Pregunta 37

Pregunta
What are the benefits of Insitu Vs Extractive sampling?
Respuesta
  • Insitu is cheaper and requires less sample conditioning.
  • There are no advantages each method is required in certain situations.
  • Insitu provides better measurement results and can help trend the process more quickly.
  • Extractive is actually the better method because it is cheaper and more accurate.

Pregunta 38

Pregunta
What is the formula for First order + Dead time?
Respuesta
  • KeF + (1-dts/T)
  • D*T(ke*C*pV)
  • dts / ke(1+TSi)
  • (ke^-dts)/(1+ti*S)

Pregunta 39

Pregunta
Linearity of a Smart Tx is an example of....
Respuesta
  • A Tuning Option
  • Characteristic
  • Trait
  • Is not related to Smart Txs

Pregunta 40

Pregunta
Which is a Mechanical Property?
Respuesta
  • Temperature
  • Smell
  • Ductile
  • State

Pregunta 41

Pregunta
Which processes require an extended diaphragm?
Respuesta
  • Heavy Oil
  • Corrosives and slurries
  • Gas
  • Chemical

Pregunta 42

Pregunta
Derivative response to changes in.....
Respuesta
  • SP and Load changes
  • SP
  • The rate of the process change
  • The integral response.

Pregunta 43

Pregunta
Which locations are acceptable for orifice taps on steam service?
Respuesta
  • Offset
  • Bottom
  • Horizontal
  • On top

Pregunta 44

Pregunta
Any location where petrochemicals or natural gas may be present is?
Respuesta
  • A hazardous location
  • Class 1 Div 1
  • Class 1 Zone 2
  • A non-hazardous location

Pregunta 45

Pregunta
What is the best method for measuring pure water?
Respuesta
  • pH
  • ORP
  • Conductivity
  • Turbidity

Pregunta 46

Pregunta
Which medium is used for Hydrostatic Pressure Tests>
Respuesta
  • Process Medium
  • Oil/Natural Gas
  • Water
  • Air

Pregunta 47

Pregunta
Who is the Magnetic Law named after?
Respuesta
  • Tesla's Law
  • Einstein's Law
  • Newton's Law
  • Faraday's Law

Pregunta 48

Pregunta
What is measured when you're using radar level?
Respuesta
  • The electromagnetic signal
  • Frequency
  • The amount of wave length absorbed
  • How much signal is returned

Pregunta 49

Pregunta
O2 in a chemical is.....
Respuesta
  • A catalyst
  • An oxidant
  • The dominant reagent
  • An reducing agent

Pregunta 50

Pregunta
In a selective process reset windup happens....
Respuesta
  • Only to the slaves
  • To all controllers
  • Only to the master
  • To all components

Pregunta 51

Pregunta
What are the benefits of cascade control?
Respuesta
  • It helps optimize the inner loop and reduce manipulated variable variance.
  • It increases the speed of response.
  • It eliminates over and undershoot.
  • Cascade control is only for extremely complicated processes and the benefit is they allow for tight control in these difficult situations.

Pregunta 52

Pregunta
What is not a conductor?
Respuesta
  • Plasma
  • Copper
  • Plastic
  • Water

Pregunta 53

Pregunta
Linear expansion is calculated with....
Respuesta
  • ΔL = T α (L2 - L1)
  • L = ΔL α (t2 - t1)
  • ΔL = L α (t2 - t1)
  • ΔL = L (t2 - t1)

Pregunta 54

Pregunta
In a closed loop Gain =
Respuesta
  • kc*kp/(1+kc*kp)
  • (kc*kp)^-1
  • (kc*kp)^2
  • (kc*kp)^1/2

Pregunta 55

Pregunta
An Oxygen Analyzer detects a 20% increase in the fuel gas, what happens to the Air to Fuel ratio?
Respuesta
  • The Ratio increases and CO2 decreases
  • The Ratio decreases and CO increases
  • The Ratio increases and CO decreases
  • The Ratio decreases and CO2 increases

Pregunta 56

Pregunta
Manual bias is required for which controllers?
Respuesta
  • Proportional
  • Proportional and Derivative
  • Proportional and Integral
  • Proportional, Integral, and Derivative

Pregunta 57

Pregunta
A self regulating process will....
Respuesta
  • Have built in controls
  • Correct the process variable without intervention
  • Does not exist in reality
  • Cannot be controlled

Pregunta 58

Pregunta
If an I/P responds to an increase in current with a reducing pressure this is an example of ......... control action
Respuesta
  • Minimizing
  • Reverse
  • Direct
  • Actuating

Pregunta 59

Pregunta
What is the sum of all errors?
Respuesta
  • All possible errors.
  • % Error * Span
  • Calculated Error + Real Error
  • The published error

Pregunta 60

Pregunta
What group is VIIA?
Respuesta
  • Transitional Metals
  • Alkali Metals
  • Noble Gases
  • Halogens

Pregunta 61

Pregunta
What is the normal state for group IIA?
Respuesta
  • Solid
  • Liquid
  • Gas
  • Depends on the element

Pregunta 62

Pregunta
What organic compound does C=C-C represent?
Image:
668be2e9-747c-4d93-ad1d-09017bbbf15e (image/png)
Respuesta
  • Propane
  • Propene
  • Benzene
  • Butene

Pregunta 63

Pregunta
What is the chemical formula for Calcium Chloride?
Respuesta
  • Ca2Cl
  • CACl2
  • CaCl2
  • CLCA2

Pregunta 64

Pregunta
Which represents Benzene using Carbon Chains..
Respuesta

Pregunta 65

Pregunta
What type of controller does this graph represent?
Image:
db514325-bc2e-4b8a-9ff8-7e54238e57ba (image/png)
Respuesta
  • PID
  • PI
  • P
  • Cascade

Pregunta 66

Pregunta
For liquid flow processes what should the controller settings be?
Respuesta
  • TA= 0.5, 10
  • TA= 1, 5
  • TA= 1, 10
  • TA= 10, 100

Pregunta 67

Pregunta
With a 5% increase in CO and a 10% increase in PV, what is the gain?
Respuesta
  • 1
  • 2
  • 0.5
  • 1.5

Pregunta 68

Pregunta
What reaction will happen if Iron is left in H2O?
Respuesta
  • Reduction
  • Oxidation
  • Ionization
  • Plating

Pregunta 69

Pregunta
What is measured when analyzing pH or electrical conductivity?
Respuesta
  • Number of free ions
  • Electrical current
  • Acidity
  • The activity of ions

Pregunta 70

Pregunta
What is annealing?
Respuesta
  • The removal of free ions from the metals surface
  • Relieves internal stress in metals
  • An inert sealing process
  • A blending of graded stainless steel

Pregunta 71

Pregunta
_C4H10 + _O2 >>>> _CO2 + _H2O Please balance the equation.
Respuesta
  • 1, 1, 1, 1
  • 2, 13, 8, 10
  • 1, 6.5, 4, 5
  • This equation cannot be balanced

Pregunta 72

Pregunta
What are the advantages of a grab sample?
Respuesta
  • Accurate
  • Cheap
  • Can be taken online
  • Is specified and maintained by industry standards

Pregunta 73

Pregunta
What are the disadvantages of grab samples?
Respuesta
  • Expensive
  • Cannot be accurately verified
  • Is not representative of the process when taken.
  • Innacurate and a Bypass is required.

Pregunta 74

Pregunta
What are the two types of turbines?
Respuesta
  • Inductance and reluctance.
  • Forward and backward.
  • Positive and negative.
  • Conventional and Smart.

Pregunta 75

Pregunta
How do you determine derivative?
Respuesta
  • It is determined by the gain and integral of the controller.
  • It is the rate of change.
  • It is a measure of how a function changes as the input changes.
  • It is the value of overshoot to eliminate

Pregunta 76

Pregunta
What is a polar covalent bond?
Respuesta
  • Unequal donation of electrons.
  • Equal sharing of electrons.
  • Unequal sharing of electrons.
  • Equal donation of electrons.

Pregunta 77

Pregunta
What are the products of coal in complete combustion?
Respuesta
  • C + O2 > CO2
  • C + O2 > CO + O2
  • C + H2O > CO + H2O
  • C + O2 > CO + CO2 + O2

Pregunta 78

Pregunta
What type of process has gain changing at 3 points?
Respuesta
  • Linear, Multicapacity, Integrating
  • Linear, Single Capacity, Self Regulating
  • Non-Linear, Multicapacity, Integrating
  • Non-Linear, Single capacity, Integrating

Pregunta 79

Pregunta
What is Lag?
Respuesta
  • Error below the setpoint
  • Deadtime
  • The over or undershoot
  • The time it takes to stabilize the output

Pregunta 80

Pregunta
What is bias?
Respuesta
  • how the conotrller modulates gain
  • How the error is calculated in reference to the change in signal
  • The sum of errors over the step change
  • Output of the controller when no errors exist

Pregunta 81

Pregunta
What type of communication is used in a digital loop with a controller with continuous talking?
Respuesta
  • Peer to peer
  • IP
  • Modbus
  • HART

Pregunta 82

Pregunta
Why is cabling shielding used?
Respuesta
  • To prevent electromagnetic interference
  • To prevent the cable from cracking during bending and coiling
  • To contain the heat and electricity traveling in the wire
  • Shielding is used to tell what gauge and specifications apply to the cable

Pregunta 83

Pregunta
Why does a transmitter require a minimum voltage?
Respuesta
  • Without power the display and signal emitter will not function.
  • The power is required to actuate the sensor
  • To accurately generate an analog signal
  • No transmitter can function without power

Pregunta 84

Pregunta
What is CV?
Respuesta
  • Control Valve
  • Calculated Velocity
  • Controlled Variable
  • Flow Coefficient

Pregunta 85

Pregunta
what is the principle of positive displacement meter?
Respuesta
  • Uses the displacement of a flapper element to correspond to the volumetric flow
  • Divides the flow media into fixed volumes and as it passes through the flow body the time taken corresponds to the exact flow.
  • Based on the velocity at the entry and exit sensor volumetric flow is calculated.
  • The size of the flow body will directly correlate to the volumetric flow.

Pregunta 86

Pregunta
What function does an I/P complete?
Respuesta
  • Converts voltage to pressure.
  • Converts pressure to current.
  • Converts current to volts.
  • Converts current to pressure.

Pregunta 87

Pregunta
Define a multi-capacity process.
Respuesta
  • A combination of dead time and first order
  • When multiple process interact and effect the overall control method
  • A process with multiple controlled variables.
  • A process with multiple controllers in a polling system to determine the final output.

Pregunta 88

Pregunta
Which is a measurement of a vibration cycle?
Respuesta
  • Peak to peak
  • Period of oscillation.
  • Wave size
  • Wave length

Pregunta 89

Pregunta
How does a Load Cell work?
Respuesta
  • Less resistance = Less Load
  • Less resistance = More Load
  • More resistance = Less Load
  • More resistance = More Load

Pregunta 90

Pregunta
Why is coal crushed for combustion?
Respuesta
  • Increased surface area will generate more heat.
  • If the coal is not crushed it will not combust. Must be a dust.
  • Crushed coal will have more efficient combustion and produce less CO.
  • It is easier to transport.

Pregunta 91

Pregunta
What functions do a sampling probe offer a Sample System?
Respuesta
  • Transmission & Separation
  • Dilution & Filtration
  • Isolation & Filtration
  • Pressure Reduction & Flow Rates

Pregunta 92

Pregunta
What is cascade control?
Respuesta
  • Uses a descending SP to slowly modulate the final control element
  • Uses a feed forward strategy to determine a new SP based on the last sent SP
  • Multiple controllers vote towards a master controller which will determine the final SP.
  • Uses output of the primrary controller to manipulate the SP of a secondary controller

Pregunta 93

Pregunta
In a H2O treatment facility, what is the best analyzer?
Respuesta
  • pH
  • Chlorine
  • O2
  • H2S

Pregunta 94

Pregunta
What does the distillation analyzer produce?
Respuesta
  • Boiling Characteristics
  • Purity
  • Dew Point
  • All other answers

Pregunta 95

Pregunta
What is a worldwide standardized analyzer?
Respuesta
  • Micro Gas Chromatograph
  • Dead Weight Tester
  • Chilled Mirror
  • Oil in Water Analyzer

Pregunta 96

Pregunta
What does Phase Lag do in first order processes?
Respuesta
  • Phase Lag increases as Gain decreases
  • Phase Lag decreases as Gain increases
  • Phase Lag increases as SP decreases
  • Phase Lag increases as Integral decreases

Pregunta 97

Pregunta
If the voltage over a 250 Ohm resistor is 10VDC what is the current?
Respuesta
  • 250 A
  • 250 mA
  • 250 kA
  • 2500 mA

Pregunta 98

Pregunta
Which O2 Analyzer uses a bridge circuit?
Respuesta
  • Thermo-Magnetic
  • Electro-Chemical
  • Zirconium Oxide
  • Infared

Pregunta 99

Pregunta
What must remain constant with capacitance level measurement?
Respuesta
  • Conductivity
  • Density
  • Volume
  • Moisutre Content

Pregunta 100

Pregunta
The SI unit for radiation dose equivalent is which of the following?
Respuesta
  • Gray
  • Curie
  • Sievert
  • Sutherby

Pregunta 101

Pregunta
SCR is an acronym for.....
Respuesta
  • Self Contained Regulator - A regulator that is not pilot or instrument operated
  • Silicon Controlled Rectifier - a device which conducts in only 1 direction.
  • Scattered Control Region - When the controller outputs cannot be plotted using a line or wave
  • Strip Chart Recorder - A recording device used to record a measured signal over time.

Pregunta 102

Pregunta
What’s the best location of an analyzer used for process control?
Respuesta
  • As close to the process as possible.
  • In an heated maintained analyze shack.
  • The control room.
  • Doesn't matter.

Pregunta 103

Pregunta
What happens to electrons when two nitrogen’s bond?
Respuesta
  • Gives Electrons, Ionic Bonding
  • Shares Electrons, Covalent Bonding.
  • Shares Electrons, Metallic Bonding.
  • Gives Electrons, Hydrogen Bonding

Pregunta 104

Pregunta
10. Given Vout = 24V Gain = 1000, R1 = 5 KOhm, Ro = 5 MOhm calculate Vin of an inverting op-amp, using: Vin=Vo/Av or Vo= (-Rf/Ri)*Vin?
Respuesta
  • 0.024 Volts
  • 24 Volts
  • 0.24 Volts
  • 24,000 Volts

Pregunta 105

Pregunta
In this circuit, what is the expression for the ratio of output voltage to input voltage (Vout/V1)?
Image:
196efa54-6113-4faf-88ac-6ccf4cb1d6c5.gif (image/gif)
Respuesta
  • Ro/R1
  • -Ro/R1
  • R1/Ro
  • -R1/Ro

Pregunta 106

Pregunta
In this circuit, you want a gain of ten. Actually, you are going to have to settle for a gain of -10 because you can't get rid of the minus sign. Still, if R1 is 5 kW, what is the value you need to use for R0? Give your answer in ohms.
Image:
9d3fbc18-7586-4092-b069-4261b0b38f14.gif (image/gif)
Respuesta
  • 500 Ohms
  • -50,000 Ohms
  • 50,000 Ohms
  • -500 Ohms

Pregunta 107

Pregunta
In this circuit, you have it set up for a gain of -10. The input voltage is .24v. What is the output voltage?
Image:
19cf2a32-d278-45e4-a2f7-75de9703c786.gif (image/gif)
Respuesta
  • -2.4 Volts
  • 2.4 Volts
  • 24 Volts
  • -.024 Volts

Pregunta 108

Pregunta
In this circuit, you have it set up for a gain of -10. The input voltage is -.35v. What is the output voltage?
Respuesta
  • 0.035 Volts
  • -3.5 Volts
  • 3.5 Volts
  • -0.035 Volts

Pregunta 109

Pregunta
Assuming that you have an inverting amplifier with R1 = 10,000W, determine a value for Ro that will produce an amplifier with a gain of 3.3.
Respuesta
  • -33000W
  • 3300W
  • 330000W
  • 33000W

Pregunta 110

Pregunta
Assuming that you have an inverting amplifier with Ro = 4,700W, determine a value for R1 that will produce an amplifer with a gain of -5.
Image:
3046433b-966d-4257-92fb-4fce4021b9cf.gif (image/gif)
Respuesta
  • 23,500W
  • 940W
  • -940W
  • -23,500W

Pregunta 111

Pregunta
Polarographic cell is good for?
Respuesta
  • UEL level in an atmosphere
  • LEL level in an atmosphere
  • O2 content in a gas
  • Aromatics

Pregunta 112

Pregunta
How to measure moisture content in a sheet of paper where particle size does not matter?
Respuesta
  • Voltage
  • Conductivity
  • Moisture Analyzer
  • Infared Absorbtion

Pregunta 113

Pregunta
4-20mA input and 10-bit output, calculate the number of mA per bit?
Respuesta
  • 15.6uA
  • 15.6 mA
  • 0.156 mA
  • 15.6 A

Pregunta 114

Pregunta
The MSB of an 8-bit system is?
Respuesta
  • 1024/8 = 128
  • 2^8 = 256/2 = 128
  • 2^8 = 256
  • 1024 * 8 = 8192

Pregunta 115

Pregunta
Method of density measurement using a sample gas column and an air column?
Respuesta
  • Weight Scale
  • Gravitometer
  • Densitometer
  • Blower Motor

Pregunta 116

Pregunta
16. Faraday’s law states that a conductor moving through a magnetic field generates a?
Respuesta
  • Field
  • Voltage
  • Current
  • Resistance

Pregunta 117

Pregunta
17. Which of the following has the fastest response: Zener diode, Avalanche diode, Metal Oxide?
Respuesta
  • Metal Oxide
  • Zener Diode
  • Avalanche Diode
  • None of the above

Pregunta 118

Pregunta
Intrinisic Safety is what type of protection?
Respuesta
  • Energy Limiting
  • Containment
  • Purging
  • General Purpose

Pregunta 119

Pregunta
What is the purpose of a Transmitter?
Respuesta
  • To measure a process variable.
  • Provide a read out indication of a process variable.
  • Converts a measured process variable into a signal.
  • Depends on the transmitter configuration.

Pregunta 120

Pregunta
How many current loops are in a PID loop?
Respuesta
  • One
  • Two
  • Three
  • Four

Pregunta 121

Pregunta
What is the formula for butane?
Respuesta

Pregunta 122

Pregunta
What is NH4CL?
Respuesta
  • Ammonia Chloride
  • Ammonium Chloride
  • Table Salt
  • Sodium Chloride

Pregunta 123

Pregunta
Please balance _CH2 + _O2 --> _CO2 + 2H2O
Respuesta
  • 2, 6, 2,
  • 2, 4, 2
  • 4, 12, 4
  • 1, 1, 1

Pregunta 124

Pregunta
What is a property of Alkanes?
Respuesta
  • Extremely reactive.
  • Saturated and don’t react readily with other hydrocarbons.
  • Does not react with any other substances.
  • Soluble in water.

Pregunta 125

Pregunta
Why is it hard to control PH?
Respuesta
  • The titration curve is non linear.
  • Very high resistance in probe.
  • Very small voltage change.
  • All of the above.

Pregunta 126

Pregunta
Given this chemical reaction in a boiler what are the products and reactants? CH4 + 2O2 → CO2 + 2H2O
Respuesta
  • Products: CO2, H2O Reactants: CH4, O2
  • Products: CH4, O2 Reactants: CO2, H2O
  • Products: CO2, O2 Reactants: CH4, H2O
  • Products: CH4, H2O Reactants: CO2, O2

Pregunta 127

Pregunta
A smart valve senses what?
Respuesta
  • Position
  • Pressure
  • Temperature
  • All answers

Pregunta 128

Pregunta
What is the purpose of the Teflon coating in a Magnetic Flow Meter?
Respuesta
  • Prevents corrosion of the meter and electrodes.
  • Prevents the generated signal from shorting to pipe.
  • The coating must be soft to create the right flow profile.
  • Without the coating the flanges will not be able to hold the meter in the correct position.

Pregunta 129

Pregunta
What is the material in an O2 analyzer membrane?
Respuesta
  • Teflon
  • PFA
  • Tefzel
  • Hard Rubber

Pregunta 130

Pregunta
How do you measure flow in a trench? (Most Common Method)
Respuesta
  • Weir
  • Paddlewheel
  • Flow Nozzle
  • Turbine

Pregunta 131

Pregunta
When transistors are used in digital circuits they usually operate in the:
Respuesta
  • Breakdown Region
  • Active Region
  • Linear Region
  • Saturation and Cutoff Regions

Pregunta 132

Pregunta
Three different Q points are shown on a dc load line. The upper Q point represents the:
Respuesta
  • Maximum Current Gain
  • Minimum Current Gain
  • Intermediate Current Gain
  • Cutoff Gain

Pregunta 133

Pregunta
A current ratio of IC/IE is usually less than one and is called:
Respuesta
  • Beta
  • Theta
  • Alpha
  • Omega

Pregunta 134

Pregunta
In a C-E configuration, an emitter resistor is used for:
Respuesta
  • Stabilization
  • AC Signal Bypass
  • Collector Bias
  • Higher Gain

Pregunta 135

Pregunta
With the positive probe on an NPN base, an ohmmeter reading between the other transistor terminals should be:
Respuesta
  • High Resistance
  • Open
  • Low Resistance
  • Infinite

Pregunta 136

Pregunta
Voltage-divider bias provides:
Respuesta
  • A Q point that is stable and easily varies with changes in the transistor's current gain.
  • A Q point that easily varies with changes in the transistor's current gain.
  • A Stable Q point.
  • An unstable Q point,

Pregunta 137

Pregunta
To operate properly, a transistor’s base-emitter junction must be forward biased with reverse bias applied to which junction?
Respuesta
  • Collector-Emitter
  • Base-Emitter
  • Base-Collector
  • Collector-Base

Pregunta 138

Pregunta
The C-B configuration is used to provide which type of gain?
Respuesta
  • Current
  • Voltage
  • Resistance
  • Power

Pregunta 139

Pregunta
The ends of a load line drawn on a family of curves determine:
Respuesta
  • The Operating Point
  • Saturation and Cutoff
  • The Amplification Factor
  • The Power Curve

Pregunta 140

Pregunta
Which is beta’s current ratio?
Respuesta
  • Ic/Ie
  • Ic/Ib
  • Ib/Ie
  • Ie/Ib

Pregunta 141

Pregunta
The Q point on a load line may be used to determine:
Respuesta
  • Vcc
  • Vc
  • Vb
  • Ic

Pregunta 142

Pregunta
A transistor may be used as a switching device or as a:
Respuesta
  • Fixed Resistor
  • Rectifier
  • Tuning Device
  • Variable Resistor

Pregunta 143

Pregunta
When a silicon diode is forward biased, what is VBE for a C-E configuration?
Respuesta
  • Emitter Voltage
  • Voltage-Divider Bias
  • 0.7V
  • 0.4V

Pregunta 144

Pregunta
With low-power transistor packages, the base terminal is usually the:
Respuesta
  • Stud Mount
  • Middle
  • Right End
  • Tab End

Pregunta 145

Pregunta
A collector characteristic curve is a graph showing:
Respuesta
  • Collector current (IC) versus collector-emitter voltage (VCE) with (VBB) base bias voltage held constant.
  • Emitter current (IE) versus collector-emitter voltage (VCE) with (VBB) base bias voltage held constant.
  • Collector current (IC) versus collector-emitter voltage (VC) with (VBB) base bias voltage held constant.
  • Collector current (IC) versus collector-emitter voltage (VCC) with (VBB) base bias voltage held constant.

Pregunta 146

Pregunta
What is the current gain for a common-base configuration where IE = 4.2 mA and IC = 4.0 mA?
Respuesta
  • 1.05 mA
  • 0.20 mA
  • 16.80 mA
  • 0.95 mA

Pregunta 147

Pregunta
If a 2 mV signal produces a 2 V output, what is the voltage gain?
Respuesta
  • 0.004
  • 100
  • 0.001
  • 1000

Pregunta 148

Pregunta
With a PNP circuit, the most positive voltage is probably:
Respuesta
  • Vcc
  • Ground
  • Vbe
  • Vc

Pregunta 149

Pregunta
Most of the electrons in the base of an NPN transistor flow:
Respuesta
  • Into the base supply
  • Into the emitter
  • Into the collector
  • Out of the base lead

Pregunta 150

Pregunta
In a transistor, collector current is controlled by
Respuesta
  • All of the below.
  • Base Current.
  • Collector Voltage.
  • Collector Resistance.

Pregunta 151

Pregunta
What is the most reliable form of density measurement
Respuesta
  • Bubbler
  • Differential Pressure
  • Densitometer
  • Weighted Flow

Pregunta 152

Pregunta
Using Psychometric chart find dew point given dry air 20 Deg C, wet air 13 Deg C?
Image:
28db0df4-d679-4249-9d6c-ba653f404513.gif (image/gif)
Respuesta
  • 10 Deg C
  • 8 Deg C
  • 7.6 Deg C
  • 7 Deg C

Pregunta 153

Pregunta
Integrating op-amp, what happens when Rf opens? Vo= (Rf/Ri) + 1*Vin
Respuesta
  • Negative Rail
  • Positive Rail
  • Clipping
  • DC Offset

Pregunta 154

Pregunta
Whose law refers to flow head or head pressure?
Respuesta
  • Einstein
  • Faraday
  • Bernoulli
  • Newton

Pregunta 155

Pregunta
Name a disadvantage of positive displacement meters?
Respuesta
  • Inaccurate
  • Mechanical wear
  • Requires 20 upstream pipe diameters
  • Hard to calibrate

Pregunta 156

Pregunta
What is an example of a PD meter?
Respuesta
  • Nutating Disc
  • Rotating Vane
  • Reciprocating Piston
  • All of the above

Pregunta 157

Pregunta
What’s the advantage of a turbine flow meter?
Respuesta
  • High Accuracy, Repeatibility
  • No Moving Parts
  • Never Requires Calibration
  • Provides cheap mass flow readout

Pregunta 158

Pregunta
How does the Magnetic Shuttle ball Vortex Shedding meter measure?
Respuesta
  • Capacitance
  • Impedance
  • Resistance
  • Inductance

Pregunta 159

Pregunta
What type of flow has a Reynolds’s number of 10,000?
Respuesta
  • Turbulent
  • Laminar
  • Transistional
  • None

Pregunta 160

Pregunta
What form of excitation in a Magnetic Flowmeter performs zeroing?
Respuesta
  • AC
  • DC
  • 3-Phase
  • Pulsed DC

Pregunta 161

Pregunta
What is a requirement for an ultrasonic Doppler flow meter?
Respuesta
  • Good Pipe Contact with Transducer
  • Laminar Flow
  • Suspended Solids or Bubbles
  • All of the above

Pregunta 162

Pregunta
Using the HART communicator it must be in what with resistor?
Respuesta
  • Paralell
  • Series
  • It can be in any circuit
  • Line

Pregunta 163

Pregunta
Most accurate form of temperature measurement?
Respuesta
  • Thermocouple
  • Thermometer Bulb
  • RTD 3 Wire or 4 Wire
  • Thermistor

Pregunta 164

Pregunta
Advantage of a Pyrometer?
Respuesta
  • Allows for multiple temperature measurements at once
  • Never requires calibration
  • No moving parts and no physical contact
  • Can be used at a distance

Pregunta 165

Pregunta
What is a Pyrometer`s principle of operation?
Respuesta
  • Excitation of the laser frequency corresponds to temperature.
  • Hot objects radiation is compared to a tungsten lamp. Thermal radiation given off by an object is a function of its absolute temperature.
  • The change in temperature of the metal generates a voltage.
  • The change in tensile strength corresponds to the change in temperature.

Pregunta 166

Pregunta
Disadvantage of a thermistor?
Respuesta
  • High Negative Temperature Coefficient
  • Low Temperature Coefficient
  • Non-linear
  • A & C

Pregunta 167

Pregunta
Why does a Thermocouple have reference temperature compensation?
Respuesta
  • To generate voltage a neutral source is required.
  • To compensate for ambient temperature changes.
  • To compensate for the junction created at the transmitter terminals.
  • B & C

Pregunta 168

Pregunta
A Thermocouple measures
Respuesta
  • Reference Temperature
  • Temperature difference between measurement junction and reference junction
  • Reference Junction
  • None of the above

Pregunta 169

Pregunta
What are the benefits of using a Thermocouple?
Respuesta
  • Wide Temperature Range
  • High Accuracy
  • Wide Temperature Range and Simple
  • A & B

Pregunta 170

Pregunta
What is a method of calibrating a Thermocouple?
Respuesta
  • Place the reference junction in an ice bath and measure ambient temperatures.
  • Measure ambient temperatures with reference tables.
  • They must be laboratory calibrated.
  • Thermocouples cannot be calibrated.

Pregunta 171

Pregunta
What is derivative?
Respuesta
  • Accounts for present values of errors.
  • Accounts for past errors and uses it to respond to new changes.
  • Rate of PV change over time, ΔPV/Δt. Rate of change of error/change in time, Δe/Δt.
  • A control method for rapidly changing processes.

Pregunta 172

Pregunta
Given PB=50%, Reverse acting, step Input of 5% increase, what is the open loop response?
Respuesta
  • 10% Decrease.
  • 10% Increase
  • 5% Decreae
  • 5% Increase

Pregunta 173

Pregunta
Given 0-6mV input and 4-20mA output, what is the gain?
Respuesta
  • 1
  • 100
  • 667
  • 332

Pregunta 174

Pregunta
With a 250Ω resistor, with 4-20mA across, what is the voltage?
Respuesta
  • 1-5 Volts
  • 10-30 Volts
  • 2-10 Volts
  • 0-24 Volts

Pregunta 175

Pregunta
Why is an H2S or Ammonia detector not good in other toxic environments?
Respuesta
  • They are fine for all environments.
  • They can cause an explosion.
  • Other combustible gases can change the response of the detector.
  • Toxic environments will damage the sensor providing false readings.

Pregunta 176

Pregunta
Given 2% CH3 and the UEL of CH3 is 5.3%. What’s the LEL?
Respuesta
  • 10%
  • 38%
  • 15%
  • 1%

Pregunta 177

Pregunta
What are the most common components to monitor in stack gases?
Respuesta
  • NOx
  • SOx
  • CO, CH4
  • O2, CO2

Pregunta 178

Pregunta
Definition of Opacity?
Respuesta
  • The density of a solution.
  • Amount of light alternation due to absorption or reflection by a solution.
  • The viscosity of a solution.
  • None of the above.

Pregunta 179

Pregunta
What is the principle of operation of an ultrasonic level detector?
Respuesta
  • Time it takes for a sound pulse to travel from a sensor to reflecting surfaces & back to the sensor. Measured time for the sound to bounce and return.
  • How much sound is absorbed as it passes through the fluid.
  • The amount of vibration in the sensor based on the frequency of the fluid.
  • None of the above.

Pregunta 180

Pregunta
What are some good processes for ultrasonic level detection?
Respuesta
  • Corrosive or Reactive Fluids.
  • Hydrocarbon storage cavity, chip bin. Solids.
  • Interface and Multi-phase Solutions
  • All of the above.

Pregunta 181

Pregunta
With no current output in a loop, what is the first thing to check?
Respuesta
  • Wire
  • Resistor
  • Power Supply
  • Voltage

Pregunta 182

Pregunta
Given an alarm circuit diagram, if the Vsupply increases by 2V, what happens?
Respuesta
  • Low and high alarm set points increases.
  • High alarm set point increases.
  • Low and high alarm set points decreases.
  • Low set point decreases.

Pregunta 183

Pregunta
70. What is the accuracy of Draegar tubes?
Respuesta
  • +/- 5%
  • +/- 10%
  • +/- 25%
  • +/- 50%

Pregunta 184

Pregunta
What is sensed by lead acetate tape?
Respuesta
  • NOx
  • H2S
  • SOx
  • CO2

Pregunta 185

Pregunta
What is sour gas?
Respuesta
  • H2S
  • Toxic CH4
  • Highly Reactive Natural Gas
  • Down well CO2

Pregunta 186

Pregunta
What is the limitation of a Coriolis Mass flow meter?
Respuesta
  • 6" Body Flanges.
  • Upstream/Downstream Pipe Diameters.
  • Both A & B.
  • None of the above.

Pregunta 187

Pregunta
Which is a type of gas density measurement?
Respuesta
  • Ultrasonic
  • Centrifugal
  • Coriolis
  • Thermal Mass

Pregunta 188

Pregunta
Where to place a hydrogen detector in a compressor building?
Respuesta
  • Down Low.
  • Up High.
  • Middle Height
  • A & B

Pregunta 189

Pregunta
Which of the following is being reduced in the following: S + O2 ---> SO2 SO2 + H2O ---> H2SO3
Respuesta
  • SO2 + H2O ---> H2SO3
  • S + O2 ---> SO2
  • Neither is reduction.
  • Both are reduction.

Pregunta 190

Pregunta
Given H+ concentration = 7.2*10e-11 find PH?
Respuesta
  • 10.14
  • 14
  • 7
  • 5.4

Pregunta 191

Pregunta
Which is more basic?
Respuesta
  • 7
  • 7.86
  • 2
  • 10

Pregunta 192

Pregunta
Difference op-amp, given Vin = 1.2V what is Vout? Vo=(Vi2-Vi1)(Rf/Ri)
Respuesta
  • -17.56V
  • 17.56V
  • 8V
  • -8V

Pregunta 193

Pregunta
Purpose of a flame detector in a burner?
Respuesta
  • To give the flame profile.
  • To detect incomplete combustion.
  • A & D
  • To detect if the pilot goes out.

Pregunta 194

Pregunta
Explosimeter prevents fire during operation by?
Respuesta
  • Flame Arrester.
  • Reducting Foil.
  • Flashback arrestor.
  • None of the above.

Pregunta 195

Pregunta
Definition of Strauhal’s number? Or how does it relate to a Shedding Vortex Meter.
Respuesta
  • Used to determine the size and number of vortices in a flow profile.
  • Relates vortices to velocity.
  • 6.022×10^23 Is used to determine the relationship between vortices and mass flow.
  • None of the above.

Pregunta 196

Pregunta
Where is the control loop shield attached?
Respuesta
  • At the instrument end only to prevent ground loops.
  • At the source end only to prevent ground loops.
  • At Both
  • To an IS barrier.

Pregunta 197

Pregunta
What are the benefits of a current limiting transmitter?
Respuesta
  • Protects all loop components.
  • Limits voltage to within operating tolerance.
  • Maintains loop resistance.
  • All of the above

Pregunta 198

Pregunta
Process is at 200Hz, When should we take a sample?
Respuesta
  • 200Hz
  • 400Hz
  • 300Hz
  • 600Hz

Pregunta 199

Pregunta
Definition of CMRR in op-amps?
Respuesta
  • Common mode rejection ratio - the ability to reject noise.
  • Common meter rising resistance - the ability to modulate resistance based on the input current
  • Common mode resistance ratio - the ratio of resistors to voltages.
  • None of the above.

Pregunta 200

Pregunta
What type of op-amps acts as if it has two gains?
Respuesta
  • Difference
  • Integrating
  • Potentiometric
  • Ideal
Mostrar resumen completo Ocultar resumen completo

¿Quieres crear tus propios Tests gratis con GoConqr? Más información.

Similar

General Pathoanatomy Final MCQs (1-110)- 3rd Year- PMU
Med Student
General Pathoanatomy Final MCQs (401-519)- 3rd Year- PMU
Med Student
Microbiology MCQs 3rd Year Final- PMU
Med Student
General Pathoanatomy Final MCQs (301-400)- 3rd Year- PMU
Med Student
Social Medicine 2 Final MCQs- 3rd Year- PMU
Med Student
GENERAL EXAMINATION OF PATIENTS-Internal Medicine 3rd Year- PMU
Med Student
Cardiovascular System- Internal Medicine 3rd Year PMU
Med Student
Respiratory System- Internal Medicne 3rd Year- PMU
Med Student
Disaster Medical Management and Support- Test 2 Disaster Medicine- PMU- 3rd Year
Med Student
Final Test- Disaster Medicine- 3rd Tear PMU
Med Student
Disaster- Test 1 Disaster Medicine- PMU- 3rd Year
Med Student
Explorar la Librería