Every atom must contain what types of particles?
Electrons and protons
Electrons and neutrons
Protons and neutrons
Electrons, protons and neutrons
An atom with 8 electrons in its outermost shell is said to be
How many valence electrons are needed to make a good conductor?
"Dielectric" is the term used for
The flow or drift of electrons through a conductor” in the same direction at the same time is the definition of
The potential difference between two points in a circuit that exerts a force on free electrons is called
What is used to control current flow in a circuit?
The relationship of voltage, current and resistance is expressed through
E, I and C
Total current in a series circuit is equal to the
Current through one component
Sum of the current through each component
Reciprocal of the current through one component
Reciprocal of the sum of the currents through each component
What is the wattage of a circuit with 28 volts applied and a total resistance of .2 ohms?
.14 watts (w)
.14 kilowatts (kW)
In a parallel circuit, the total voltage is equal to the
Sum of the voltages across each branch
Voltage across each resistor
Voltage across each branch
The reciprocal of the voltage across the resistances
Source current in a parallel circuit will be divided according to branch
The area around a magnet where its influence can be felt is the definition of the
Law of attraction and repulsion
“The ability of a material to pass lines of force” is a definition of
The magnetism that remains after the magnetizing force has been removed is known as
The magnetic field of an electromagnet can be varied by changing the
Type of core
Number of turns in the coil
Amount of current through the coil
All of the above
The electromechanical generation of a voltage requires a magnetic field, relative motion, and
A complete circuit
The principle behind all electromechanical generation is
The function of the commutator in a DC generator is to
Complete the circuit to the load
Induce DC into the external circuit
Rectify the input
Change AC voltage to DC voltage
Because an inductor stores energy and then returns it to the circuit, it is called a
An inductor stores energy in the form of
A magnetic field
An electrostatic field
The process by which a current change in one coil produces a voltage in another coil is called
None of the above
A transformer will change all of the following except
Normally, the winding of a transformer that is connected to a power source is known as the
What kind of turns of wire is found in the secondary windings of a step up transformer?
A relay is an electrically operated
A relay that, once energized, requires a second coil to be energized before the contacts will return to their original positions is called a
A capacitor stores energy in the form of
In a capacitor, the dielectric is the
Opposition of a capacitor to AC is called
The factors which determine the time required to charge a capacitor are the capacitance and the
Amount of resistance
Type of dielectric
The anode of a diode is constructed of
Expanding or contracting the depletion region of a diode is called
A diode placed in a circuit in reverse bias is being used as
A spike protector
A zener will conduct in reverse bias
For a second or two at a time
Until gate potential has been reached
Once the avalanche point has been reached
Until the breakdown point has been reached
A zener being used as a regulator must have a resistor placed in the circuit in
What is the approximate operating voltage of a LED?
The SCR has how many PN junctions?
The amount of current required to gate an SCR is called
Forward break over voltage
In order for an SCR to be turned off
The forward break over voltage must exceed the holding voltage.
The current must drop below the holding current.
The negative amp switch must activate.
The negative volt switch must activate.
The best method of troubleshooting is the
Which troubleshooting step is done by knowing proper equipment operation?
Repair and check
Elimination and isolation
During which troubleshooting step do you try to determine which system could cause the malfunction?
During which troubleshooting step do you first use the schematic diagram?
Which troubleshooting aid is designed to aid you if you see an unfamiliar symbol?
Reference designation index
Which troubleshooting aid is designed to aid you in finding components on a diagram?
When used in a series circuit to measure voltage, how is a multimeter connected in the circuit?
To set a value to the height of the oscilloscope grid markings, you adjust the
Time sweep selector
To ensure accuracy of an oscilloscope when preparing for operation you should always,
Zero the display
Center the display
Identify the cal point and adjust to zero
Identify the cal point and calibrate the display
When you are testing a transformer, an open coil reading on the 8025A multimeter will be indicated by
An extending analog bar graph
Which could be the indication from the 8025A multimeter when you are checking a serviceable capacitor?
How many junctions are checked to test the serviceability of a transistor?
When checking a FET, you must check the diode junction and the continuity between the
Gate and source
Source and drain
Gate and substrate
Substrate and drain
How can you identify an electrostatic sensitive device?
The package will have special coloring as specified in local directives.
The package will have a special control number as specified in local directives.
It will be marked with the MIL-STD–129 symbol or a caution marking.
It will be marked with the MIL-SPC–235 symbol or a warning marking.
A heat sink is used in soldering to
Prevent heat from damaging the component being soldered
Prevent heat from damaging other components in the circuit
Apply heat to the component being soldered
Apply heat to other components in the circuit
A pitted or worn soldering iron tip should be redressed with a flat, fine, single-cut file and should be
Clean of solder
Checked for length
The first step in soldering a conductor is to
Wick the wire
Remove the insulation
Apply heat to the connection
Apply solder to the connection
When soldering flat perforated terminals, the conductor is connected to the terminal using
90 degree wrap
180 degree wrap
270 degree wrap
360 degree wrap
A wire is inserted into a solder cup until the
Wire touches the bottom
Wire clears the top of the cup
Insulation touches the cup
Wire protrudes from the weep hole
The best method of repairing a lifted circuit track on a PCB is to
Replace it with bare wire
Replace it with insulated wire