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Electrical Engineering Pre-Interview Quiz

Piotr Orlik 99 perguntas Atualizado em 20 out 2020

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Perguntas do quiz (99)

1Symbol on a picture is for:
1. ACapacitor
2. BInductor
3. CResistor
2What are typical values for resistors that one can buy?
1. ApOhm - nOhm
2. BnOhm - mOhm
3. CmOhm - MOhm
4. DMOhm - TOhm
3Symbol on a picture is for:
1. ACapacitor
2. BInductor
3. CResistor
4What are typical values for capacitors that one can buy?
1. ApF - mF
2. BmF - kF
3. CkF - MF
5Symbol on a picture is for:
1. ACapacitor
2. BInductor
3. CResistor
6What are typical values for coils and/or inductors that one can buy?
1. ApH - nH
2. BnH - mH
3. CmH - MH
4. DMH - TH
7What is ideal ammeter resistance and how one should connect it in circuit?
1. AZero resistance, parallel
2. BZero resistance, in series
3. CInfinite resistance, parallel
4. DInfinite resistance, in series
8What is ideal voltmeter resistance and how one should connect it in circuit?
1. AZero resistance, parallel
2. BZero resistance, in series
3. CInfinite resistance, parallel
4. DInfinite resistance, in series
9Symbol on a picture is for:
1. APNP transistor
2. BNPN transistor
3. CN-Channel MOSFET
4. DP-Channel MOSFET
10Symbol on a picture is for:
1. APNP transistor
2. BNPN transistor
3. CN-Channel MOSFET
4. DP-Channel MOSFET

11Symbol on a picture is for:
1. APNP transistor
2. BNPN transistor
3. CN-Channel MOSFET
4. DP-Channel MOSFET
12Symbol on a picture is for:
1. APNP transistor
2. BNPN transistor
3. CN-Channel MOSFET
4. DP-Channel MOSFET
13What is equivalent resistance of that circuit?
1. A~9.52 kOhm
2. B10 kOhm
3. C50 kOhm
4. D60 kOhm
5. E100 kOhm
14What is equivalent inductance of that circuit?
1. AmH
2. BnH
15What is equivalent capacitance of that circuit?
1. A~20.95 nF
2. B22 nF
3. C132 nF
4. D220 nF
5. E242 nF
16NTC is a type of:
1. ACapacitor with negative temperature coefficient
2. BInductor with negative temperature coefficient
3. CResistor with negative temperature coefficient
4. DTransistor with negative temperature coefficient
17PTC is a type of:
1. ACapacitor with positive temperature coefficient
2. BInductor with positive temperature coefficient
3. CResistor with positive temperature coefficient
4. DTransistor with positive temperature coefficient
18What is E24, E96, E192?
1. ACodes of capacitors from different classes
2. BPackage codes of inductors
3. CStandard resistor series
4. DTransistor current gain codes
19What is C0G, X7R, Y5V?
1. ACodes of capacitors from different classes
2. BPackage codes of inductors
3. CStandard resistor series
4. DTransistor current gain codes
20Assign capacitor types to given chart:
1. A1 (red) - Ceramic,
  2 (orange) - Electrolytic,
  3 (green) - Polymer,
  4 (blue) - Tantalum.
2. B1 (red) - Tantalum,
  2 (orange) - Polymer,
  3 (green) - Electrolytic,
  4 (blue) - Ceramic.
3. C1 (red) - Ceramic,
  2 (orange) - Polymer,
  3 (green) - Tantalum,
  4 (blue) - Electrolytic.
4. D1 (red) - Electrolytic,
  2 (orange) - Tantalum,
  3 (green) - Polymer,
  4 (blue) - Ceramic.
21What is voltage gain of circuit shown (equal resistances)?
1. A0.5 that is - 3 dB
2. B0.5 that is - 6 dB
3. C1.0 that is 3 dB
4. D1.0 that is 6 dB
5. E2.0 that is 3 dB
6. F2.0 that is 6 dB
22What will be the voltage value at output after 10 ms for first order RC filter (R = 10 kOhm, C = 100 nF, at t = 0 Uin changes from 0 V to 12 V)?
1. A0 V
2. B~6 V
3. C~12 V
4. DInfinite
5. EUnknown
23Is it possible to check with multimeter if bipolar transistor is working or damaged?
1. AYes
2. BNo
3. CMaybe
24When thinking of PCB design, the bigger current:
1. Athinner trace
2. Bbigger clearance
3. Cwider trace
25When thinking of PCB design, the higher voltage:
1. Athe smaller clearance
2. Bthe wider traces
3. Cthe bigger clearance
26What you see on picture are probably:
1. ASOT23, SOIC, QFP
2. BChip Resistor, Chip Transistor, QFP
3. CChip Resistor, SON IC, QFP
27What is typical (commercial) electronic temperature range?
1. A0°C to 70°C, sometimes specified to 85°C
2. B-40°C to 85°C, sometimes specified to 150°C
3. C-55°C to 125°C
28What is automotive (Grade 3) temperature range?
1. A0°C to 85°C
2. B0°C to 150°C
3. C-40°C to 85°C
4. D-80°C to 225°C
29What you associate EMC with:
1. AElectromagnetic Music Counter
2. BElectromagnetic Compatibility
3. CElectro Media Console
30What is general rule for placing capacitors on power supply lines on circuit board?
1. APlace all capacitors (regardless capacitance) together in one place on board
2. BPlace capacitors as close as possible to supply pin of the IC’s that cap is dedicated
3. CPlace all capacitors close to the main connector
4. DIt does not matter where to place them as long as electrical connection is present
31Single Ended trace impedance depends on:
1. ATrace width
2. BCopper thickness
3. CDielectric relative permittivity
4. DDielectric thickness (distance to next solid reference plane layer)
5. EReference plane (distance, shape, breaks, etc.)
6. FAll of the above
32Copper thickness on printed board affects:
1. ATrace conductivity
2. BMaximum allowable current (current capacity)
3. CThermal behavior
4. DCosts
5. ETrack/trace spacing
6. FAll of the above
33What we see on picture is cross section of:
1. ANTC
2. BPCB
3. CRTD
34What are tracks/traces and what is their purpose:
1. APrinted or etched wire on a printed circuit board, electrically connects electronic components
2. BAre made of dielectric to protect components
3. CPrinted with special non-conductive ink notes on board that describes how components should be placed on board
35Tombstone effect is:
1. ADeath of soldering station operator due to flux fumes
2. BMounting condition whereby a leadless device has only one of its metallized terminations soldered
3. CFailure of component during ESD test
36Component on picture marked with red circle is probably:
1. ALED
2. BResistor
3. CCeramic capacitor
4. DElectrolytic capacitor
5. EIC
37Component on picture marked with red circle is probably:
1. ALED
2. BResistor
3. CCeramic capacitor
4. DElectrolytic capacitor
5. EIC
38Component on picture marked with red circle is probably:
1. ALED
2. BResistor
3. CCeramic capacitor
4. DElectrolytic capacitor
5. EIC
39Component on picture marked with red circle is probably:
1. ALED
2. BResistor
3. CCeramic capacitor
4. DElectrolytic capacitor
5. EIC
40Component on picture marked with red circle is probably:
1. ALED
2. BResistor
3. CCeramic capacitor
4. DElectrolytic capacitor
5. EIC
410x1F equals in decimal:
1. A16
2. B25
3. C31
4. D271
42What is the reason to place fiducials on PCB?
1. AFiducials are kind of test coupons used to check if PCB meets manufacturing requirements
2. BFiducials acts as reference points for stencil and automated component placement
3. CFiducials are used to check solder mask breakdown voltage
4. DThere is no need to place fiducials on PCB
43Calculate resistor value knowing that desired luminous flux can be achieved by I = 10 mA and that current causes U = 2 V voltage drop on LED.
1. A1 Ω
2. B1.2 Ω
3. C1 kΩ
4. D1.2 kΩ
5. E12 kΩ
6. F1000 kΩ
44What is SMT?
1. ATechnology in which the electrical components are mounted into drilled holes in a PCB.
2. BMethod in which the electrical components are mounted directly onto the surface of a PCB.
3. CSpecial marks technology that is used for automated electrical PCB check.
45What is ESD?
1. ASudden flow of electricity between two electrically charged objects
2. BType of ceramic chip antenna
3. COne of destructive electronic system tests that electronics are subjected to
46What is DRC?
1. AOne of capacitor electrical parameter
2. BLeakage current caused by drain resistance
3. CType of automated PCB design verification
47Select better routing technique for bend geometry
1. AA
2. BB
48Select best method of connecting traces to pads:
1. AA
2. BB
3. CC
4. DD
49Choose best solution of connecting power supply to IC (VCC+GND)
1. AA
2. BB
3. CC
4. DD
50Which of periodic waveforms has wider frequency spectrum?
1. AA
2. BB
51What is thermocouple?
1. ACouple of electrical elements used to heat up electronic module in low temperatures
2. BElectrical device that produces temperature dependent voltage
3. CElectrical device that analyzes composition of vapor
52What value meter will show (ammeter)
1. A1
2. B2
3. C3
53What value meter will show (voltmeter)
1. A1
2. B2
3. C3
54What is dB?
1. ADummy board used during prototyping
2. BUnit of measurement used to express the ratio of one value to another on a linear scale
3. CRelative unit of measurement used to express the ratio of one value to another on a logarithmic scale
55Symbol on a picture is for:
1. ATwo input NAND gate
2. BTwo input NOR gate
3. CTwo input NOT gate
56Symbol on a picture is for:
1. ATwo input NAND gate
2. BTwo input NOR gate
3. CTwo input NOT gate
57What is typical inductance for single via?
1. AUsually below 2nH
2. BUsually between 12 and 100 nH
3. CUsually above 120 nH
58What is PCB via?
1. AAn electrical connection between layers
2. BA trace connecting connecting two connectors
3. CA type of tooling hole used during automatic component placement
59What is cross talk?
1. AFull duplex communication interface between microcontrollers
2. BOfficial communication way agreed between supplier and electronic designer
3. CUnwanted transfer of energy from one transmission line to another
60What kind of circuit is presented on picture?
1. ALow pass filter
2. BHigh pass filer
3. CBand pass filter
4. DBand stop filter
61What kind of circuit is presented on picture?
1. ALow pass filter
2. BHigh pass filer
3. CBand pass filter
4. DBand stop filter
62What kind of circuit is presented on picture?
1. ALow pass filter
2. BHigh pass filer
3. CBand pass filter
4. DBand stop filter
63What kind of circuit is presented on picture?
1. ALow pass filter
2. BHigh pass filer
3. CBand pass filter
4. DBand stop filter
64What kind of circuit is presented on picture?
1. AInverting amplifier
2. BNon-Inverting amplifier
3. CDifferential amplifier
65What kind of circuit is presented on picture?
1. AInverting amplifier
2. BNon-Inverting amplifier
3. CDifferential amplifier
66What kind of circuit is presented on picture?
1. AInverting amplifier
2. BNon-Inverting amplifier
3. CDifferential amplifier
67What kind of circuit is presented on picture?
1. ACurrent source
2. BVoltage regulator
3. CBuck converter
4. DBoost converter
68What kind of circuit is presented on picture?
1. ACurrent source
2. BVoltage regulator
3. CBuck converter
4. DBoost converter
69What kind of circuit is presented on picture?
1. ACurrent source
2. BVoltage regulator
3. CBuck converter
4. DBoost converter
70What kind of circuit is presented on picture?
1. ACurrent source
2. BVoltage regulator
3. CBuck converter
4. DBoost converter
71RTD can be used to measure temperature.
1. AVerdadeiro
2. BFalso
72Thermocouple can be used to measure temperature.
1. AVerdadeiro
2. BFalso
73Diode can be used to measure temperature.
1. AVerdadeiro
2. BFalso
74Thermistor can be used to measure temperature.
1. AVerdadeiro
2. BFalso
75Transistor can be used to measure temperature.
1. AVerdadeiro
2. BFalso
76Linear voltage regulator in comparison with switching mode power supply is more noisy.
1. AVerdadeiro
2. BFalso
77Linear voltage regulator in comparison with switching mode power supply is more efficient.
1. AVerdadeiro
2. BFalso
78Linear voltage regulator in comparison with switching mode power supply requires more components (inductors, capacitors, etc.).
1. AVerdadeiro
2. BFalso
79Symbol on a picture is for:
1. ALED
2. BTVS
3. CZener diode
80Symbol on a picture is for:
1. ALED
2. BTVS
3. CZener diode
81Symbol on a picture is for:
1. ALED
2. BTVS
3. CZener diode
82Symbol on a picture is for:
1. AOperational amplifier
2. BAdder
3. CAND gate
83Symbol on a picture is for:
1. AResistor
2. BFuse
3. CVaristor
84Symbol on a picture is for:
1. ACrystal oscillator
2. BElectrolytic capacitor
3. CFuse
85Testing the NPN transistor
Using ohmmeter, connecting positive terminal to base and negative to emitter, the reading will be:
1. AShort circuit (0Ω)
2. BLow resistance
3. COpen circuit
86Testing the NPN transistor
Using ohmmeter, connecting negative terminal to base and positive to emitter, the reading will be:
1. AShort circuit (0Ω)
2. BLow resistance
3. COpen circuit
87Testing the NPN transistor
Using ohmmeter, connecting positive terminal to collector and negative to base, the reading will be:
1. AShort circuit (0Ω)
2. BLow resistance
3. COpen circuit
88Testing the NPN transistor
Using ohmmeter, connecting negative terminal to collector and positive to base, the reading will be:
1. AShort circuit (0Ω)
2. BLow resistance
3. COpen circuit
89Testing the NPN transistor
Using ohmmeter, connecting positive terminal to collector and negative to emitter, the reading will be:
1. AShort circuit (0Ω)
2. BLow resistance
3. COpen circuit
90Testing the NPN transistor
Using ohmmeter, connecting negative terminal to collector and positive to emitter, the reading will be:
1. AShort circuit (0Ω)
2. BLow resistance
3. COpen circuit
91Testing the PNP transistor
Using ohmmeter, connecting positive terminal to base and negative to emitter, the reading will be:
1. AShort circuit (0Ω)
2. BLow resistance
3. COpen circuit
92Testing the PNP transistor
Using ohmmeter, connecting negative terminal to base and positive to emitter, the reading will be:
1. AShort circuit (0Ω)
2. BLow resistance
3. COpen circuit
93Testing the PNP transistor
Using ohmmeter, connecting positive terminal to collector and negative to base, the reading will be:
1. AShort circuit (0Ω)
2. BLow resistance
3. COpen circuit
94Testing the PNP transistor
Using ohmmeter, connecting negative terminal to collector and positive to base, the reading will be:
1. AShort circuit (0Ω)
2. BLow resistance
3. COpen circuit
95Testing the PNP transistor
Using ohmmeter, connecting positive terminal to collector and negative to emitter, the reading will be:
1. AShort circuit (0Ω)
2. BLow resistance
3. COpen circuit
96Testing the PNP transistor
Using ohmmeter, connecting negative terminal to collector and positive to emitter, the reading will be:
1. AShort circuit (0Ω)
2. BLow resistance
3. COpen circuit
97UART is a:
1. ADifferential communication interface
2. BCommunication standard where logic 1 is voltage +12 V and logic 0 is -12 V
3. CAsynchronous serial communication
98SPI in comparison with I2C:
1. ARequires only two (2) lines vs. minimum four (4) for I2C
2. BCan be much faster than I2C
3. CIs half-duplex vs. full duplex for I2C
99LIN in comparison with CAN is:
1. AMuch faster
2. BSingle wire vs. twisted pair required in CAN
3. CMuch complex

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Descrição: Electrical Engineering Quiz sobre Electrical Engineering Pre-Interview Quiz, criado por Piotr Orlik em 02-10-2020.
Autor: Piotr Orlik
Idioma: English
Visualizações: 19
Histórico: Criado em 2 out 2020 · atualizado em 20 out 2020
Etiquetas: electrical engineering
Avaliação: Ainda sem avaliações
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Electrical Engineering Pre-Interview Quiz

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