Electrical Engineering MCQs

Option A: 0 dB

Option B: 8.30 dB

Option C: -8.30 dB

Option D: 0.8 dB

Correct Answer: 0 dB ✔

Option A: 5.14 MHz

Option B: 514 kHz

Option C: 5.03 MHz

Option D: 503 kHz

Correct Answer: 5.14 MHz ✔

Option A: 0 V

Option B: 5.97 V

Option C: 6 V

Option D: 597 mV

Correct Answer: 5.97 V ✔

Option A: 93.8 kHz

Option B: 93.8 Hz

Option C: 861 Hz

Option D: 86.12 kHz

Correct Answer: 93.8 kHz ✔

Option A: 723 Hz

Option B: 7,234 Hz

Option C: 362 Hz

Option D: 3,617 Hz

Correct Answer: 3,617 Hz ✔

Option A: 6.02 dB

Option B: -6.02 dB

Option C: 12.04 dB

Option D: -12.04 dB

Correct Answer: 6.02 dB ✔

Option A: 10.9 V

Option B: 1.09 V

Option C: 1.1 V

Option D: 12 V

Correct Answer: 10.9 V ✔

Option A: 1.1 mV

Option B: 11.1 mV

Option C: 111 mV

Option D: 200 mV

Correct Answer: 1.1 mV ✔

Option A: 3.5 kHz

Option B: 0 Hz

Option C: 0 Hz to 3.5 kHz

Option D: 7 kHz

Correct Answer: 3.5 kHz ✔

Option A: is 7 kHz

Option B: is 10 kHz

Option C: is 12 kHz

Option D: cannot be determined

Correct Answer: is 12 kHz ✔

Option A: 530 Hz

Option B: 106 Hz

Option C: 11.5 Hz

Option D: 53 Hz

Correct Answer: 53 Hz ✔

Option A: solve for all the voltage drops

Option B: solve for the total current and resistance

Option C: equate all series components

Option D: equate all parallel components

Correct Answer: solve for the total current and resistance ✔

Option A: circuit diagram

Option B: battery knobs

Option C: battery terminals

Option D: battery sides

Correct Answer: battery terminals ✔

Option A: twice the source voltage

Option B: half the source voltage

Option C: zero volts

Option D: the same as the source voltage

Correct Answer: zero volts ✔

Option A: individual component parameters

Option B: a percent of the total power depending on resistor ratios

Option C: total current squared multiplied by the resistor values

Option D: a percent of the voltage division ratio squared

Correct Answer: individual component parameters ✔

Option A: increase

Option B: remain the same

Option C: decrease

Option D: cannot tell

Correct Answer: decrease ✔

Option A: bleeder current

Option B: load current

Option C: resistor current

Option D: voltage current

Correct Answer: bleeder current ✔

Option A: 200 mA

Option B: 400 mA

Option C: 600 mA

Option D: 800 mA

Correct Answer: 400 mA ✔

Option A: cannot tell

Option B: remains the same

Option C: increases

Option D: decreases

Correct Answer: decreases ✔

Option A: current

Option B: voltage

Option C: resistance

Option D: power

Correct Answer: resistance ✔

Option A: nonconductor

Option B: battery

Option C: conductor

Option D: microwave

Correct Answer: battery ✔

Option A: 2 V, 4 V

Option B: 2 V, 2 V

Option C: 2 V, 6 V

Option D: 4 V, 6 V

Correct Answer: 2 V, 4 V ✔

Option A: 20,000 Ω

Option B: 100,000 Ω

Option C: 200,000 Ω

Option D: 1,000,000 Ω

Correct Answer: 100,000 Ω ✔

Option A: 1 MΩ

Option B: 100 kΩ

Option C: 1 kΩ

Option D: 330 Ω

Correct Answer: 1 MΩ ✔

Option A: 138 Ω

Option B: 1,389 Ω

Option C: 5,700 Ω

Option D: 880 Ω

Correct Answer: 1,389 Ω ✔

Option A: 1 MΩ

Option B: 24 kΩ

Option C: 18 kΩ

Option D: 12 kΩ

Correct Answer: 12 kΩ ✔

Option A: 1,650 Ω

Option B: 1,078 Ω

Option C: 77.8 Ω

Option D: 778 Ω

Correct Answer: 778 Ω ✔

Option A: 25 %

Option B: 20 %

Option C: 100 %

Option D: 50 %

Correct Answer: 20 % ✔

Option A: 1 V

Option B: 50 V

Option C: 500 V

Option D: 1,000 V

Correct Answer: 1,000 V ✔

Option A: 6.8 kΩ

Option B: 2.2 kΩ

Option C: 6.8 kΩ and 10 kΩ

Option D: 2.2 kΩ and 1 kΩ

Correct Answer: 6.8 kΩ ✔

Option A: 470 Ω or 1.2 kΩ

Option B: 3 kΩ

Option C: 470 Ω

Option D: 1.2 kΩ

Correct Answer: 470 Ω ✔

Option A: 680 Ω

Option B: 1,029 Ω

Option C: 200 Ω

Option D: 880 Ω

Correct Answer: 1,029 Ω ✔

Option A: Indeterminable

Option B: 2 kΩ

Option C: 10 kΩ

Option D: 20 kΩ

Correct Answer: 2 kΩ ✔

Option A: 900 μA

Option B: 9 mA

Option C: 90 mA

Option D: 800 μA

Correct Answer: 900 μA ✔

Option A: 0.57 V

Option B: 6 V

Option C: 12 V

Option D: 5.7 V

Correct Answer: 5.7 V ✔

Option A: 24 V

Option B: 12 V

Option C: 0 V

Option D: 6 V

Correct Answer: 24 V ✔

Option A: 1,403 Ω

Option B: 4.7 kΩ

Option C: 2 kΩ

Option D: 3,403 Ω

Correct Answer: 4.7 kΩ ✔

Option A: 24 Ω

Option B: 2.4 Ω

Option C: 300 Ω

Option D: 3,000 Ω

Correct Answer: 3,000 Ω ✔

Option A: 14 mA

Option B: 1.4 mA

Option C: 5 mA

Option D: 50 mA

Correct Answer: 1.4 mA ✔

Option A: 12 V

Option B: 24 V

Option C: 0 V

Option D: 6 V

Correct Answer: 12 V ✔

Option A: 60 db

Option B: 30 db

Option C: 120 db

Option D: 600 db

Correct Answer: 60 db ✔

Option A: Resonant

Option B: Sideband

Option C: 3 db

Option D: None of the above

Correct Answer: 3 db ✔

Option A: 2 W

Option B: 6 W

Option C: 68 W

Option D: None of the above

Correct Answer: 68 W ✔

Option A: Changes in temperature cause thermal instability

Option B: Circuit becomes heavy and costly

Option C: It becomes difficult to bias the circuit

Option D: None of the above

Correct Answer: Changes in temperature cause thermal instability ✔

Option A: More than

Option B: The same as

Option C: Less than

Option D: Data insufficient

Correct Answer: More than ✔

Option A: 5 mV

Option B: 2 mV

Option C: 8 mV

Option D: 5 mV

Correct Answer: 5 mV ✔

Option A: 5 db

Option B: 2 db

Option C: 10 db

Option D: 3 db

Correct Answer: 3 db ✔

Option A: RC coupling

Option B: Transformer coupling

Option C: Direct coupling

Option D: None of the above

Correct Answer: RC coupling ✔

Option A: 30 db

Option B: 60 db

Option C: 120 db

Option D: 600 db

Correct Answer: 60 db ✔

A. Step up
B. Step down
C. Same turn ratio
None of the above

Correct Answer: Step down ✔

Option A: 600 db

Option B: 24 db

Option C: 14 db

Option D: 27 db

Correct Answer: 27 db ✔

Option A: Large

Option B: Very large

Option C: Small

Option D: None of the above

Correct Answer: Small ✔

Option A: RC

Option B: Transformer

Option C: Direct

Option D: Impedance

Correct Answer: Transformer ✔

Option A: 100 pF

Option B: 0.1 µF

Option C: 0.01 µF

Option D: 10 µF

Correct Answer: 10 µF ✔

Option A: RC

Option B: Transformer

Option C: Direct

Option D: None of the above

Correct Answer: Direct ✔

Option A: Amplifier level output is kept constant

Option B: Amplifier frequency is held constant

Option C: Generator frequency is held constant

Option D: Generator output level is held constant

Correct Answer: Generator output level is held constant ✔

Option A: To pass d.c. between the stages

Option B: Not to attenuate the low frequencies

Option C: To dissipate high power

Option D: None of the above

Correct Answer: Not to attenuate the low frequencies ✔

Option A: RC

Option B: Transformer

Option C: Direct

Option D: None of the above

Correct Answer: Direct ✔

Option A: In db

Option B: In volts

Option C: As a number

Option D: None of the above

Correct Answer: In db ✔

Option A: RC coupling

Option B: Transformer coupling

Option C: Direct coupling

Option D: Impedance coupling

Correct Answer: Transformer coupling ✔

Option A: There is considerable power loss

Option B: There is hum in the output

Option C: Electrical size of coupling capacitor becomes very large

Option D: None of the above

Correct Answer: Electrical size of coupling capacitor becomes very large ✔

Option A: 40%

Option B: 80%

Option C: 20%

Option D: 25%

Correct Answer: 40% ✔

A. Power loss in the coupling device
B. Loading effect of the next stage
C. The use of many transistors
The use of many capacitors

Correct Answer: Loading effect of the next stage ✔

Option A: 3 db

Option B: 66 db

Option C: 20 db

Option D: 200 db

Correct Answer: 66 db ✔

A. Block a.c.
B. Separate bias of one stage from another
C. Increase thermal stability
None of the above

Correct Answer: Separate bias of one stage from another ✔

Option A: 1 µF

Option B: 100 pF

Option C: 0.01 µF

Option D: 50 µF

Correct Answer: 50 µF ✔

Option A: Large value of coupling capacitor

Option B: Low efficiency

Option C: Large number of components

Option D: None of the above

Correct Answer: Low efficiency ✔

Option A: 8 db

Option B: 6 db

Option C: 5 db

Option D: 4 db

Correct Answer: 8 db ✔

Option A: It is a simple unit

Option B: Calculations become easy

Option C: Human ear response is logarithmic

Option D: None of the above

Correct Answer: Human ear response is logarithmic ✔

Option A: Good

Option B: Very good

Option C: Excellent

Option D: Poor

Correct Answer: Poor ✔

Option A: 50%

Option B: 35%

Option C: 26%

Option D: 22%

Correct Answer: 26% ✔

Option A: Sideband

Option B: Resonant

Option C: Half-resonant

Option D: Half-power

Correct Answer: Half-power ✔

A. Frequency distortion
B. Amplitude distortion
C. Frequency as well as amplitude distortion
None of the above

Correct Answer: Frequency distortion ✔

Option A: Collector voltage is stepped up

Option B: resistance is low

Option C: collector voltage is stepped down

Option D: none of the above

Correct Answer: resistance is low ✔

Option A: 0

Option B: 1

Option C: 1

Option D: 10

Correct Answer: 0 ✔

Option A: Power

Option B: Voltage

Option C: Current

Option D: None of the above

Correct Answer: Power ✔

Option A: Good impedance matching

Option B: Economy

Option C: High efficiency

Option D: None of the above

Correct Answer: Economy ✔

Option A: Changes abruptly with frequency

Option B: Is constant

Option C: Changes uniformly with frequency

Option D: None of the above

Correct Answer: Is constant ✔

Option A: Voltage

Option B: Current

Option C: Power

Option D: None of the above

Correct Answer: Voltage ✔

Option A: One stage

Option B: Two stages

Option C: Three stages

Option D: More than one stages

Correct Answer: More than one stages ✔

Option A: RC

Option B: RC || RE

Option C: RC – RE

Option D: RC + RE

Correct Answer: RC ✔

Option A: CC

Option B: CB

Option C: CE

Option D: none of the above

Correct Answer: CE ✔

Option A: c. power into a.c. power

Option B: c. power into d.c. power

Option C: high resistance into low resistance

Option D: none of the above

Correct Answer: c. power into a.c. power ✔

Option A: Electrolytic

Option B: Mica

Option C: Paper

Option D: Air

Correct Answer: Electrolytic ✔

Option A: The same as

Option B: Less than

Option C: More than

Option D: None of the above

Correct Answer: Less than ✔

Option A: Transistor

Option B: Biasing circuit

Option C: Collector supply VCC

Option D: None of the above

Correct Answer: Collector supply VCC ✔

Option A: Emitter is heavily doped

Option B: Collector has reverse bias

Option C: Collector is wider than emitter or base

Option D: None of the above

Correct Answer: Collector has reverse bias ✔

Option A: Input impedance is very high

Option B: Input impedance is low

Option C: Output impedance is very low

Option D: None of the above

Correct Answer: Input impedance is very high ✔

Option A: The same as

Option B: Less than

Option C: More than

Option D: None of the above

Correct Answer: More than ✔

Option A: Transistor will be destroyed

Option B: Biasing conditions will change

Option C: Signal will not reach the base

Option D: None of the above

Correct Answer: Biasing conditions will change ✔

Option A: Grounded emitter

Option B: Grounded base

Option C: Grounded collector

Option D: None of the above

Correct Answer: Grounded emitter ✔

Option A: High

Option B: Very high

Option C: Moderate

Option D: Low

Correct Answer: Low ✔

Option A: 1000

Option B: A million

Option C: 100

Option D: 10000

Correct Answer: A million ✔

Option A: About 1

Option B: Low

Option C: High

Option D: Moderate

Correct Answer: Moderate ✔

Option A: Increase the output impedance of transistor

Option B: Protect the transistor

Option C: Pass a.c. and block d.c.

Option D: Provide biasing

Correct Answer: Pass a.c. and block d.c. ✔

Option A: 10 db

Option B: 20 db

Option C: 40 db

Option D: None of the above

Correct Answer: 20 db ✔

Option A: Thin base

Option B: Thin collector

Option C: Wide emitter

Option D: None of the above

Correct Answer: Thin base ✔

Option A: Short

Option B: Open

Option C: Partially short

Option D: None of the above

Correct Answer: Open ✔

Option A: Avoid voltage gain drop

Option B: Forward bias the emitter

Option C: Reduce noise in the amplifier

Option D: None of the above

Correct Answer: Avoid voltage gain drop ✔

Option A: Reverse bias the emitter

Option B: Forward bias the collector

Option C: Set up operating point

Option D: None of the above

Correct Answer: Set up operating point ✔