Electrical Engineering MCQs

Option A: Short

Option B: Open

Option C: Partially open

Option D: None of the above

Correct Answer: Short ✔

Option A: RL + RC

Option B: RC || RL

Option C: RL – RC

Option D: RC

Correct Answer: RC || RL ✔

Option A: Protect the transistor

Option B: Cool the transistor

Option C: Couple or bypass a.c. component

Option D: Provide biasing

Correct Answer: Couple or bypass a.c. component ✔

Option A: α

Option B: (1 + α)

Option C: (1+ β)

Option D: β

Correct Answer: β ✔

Option A: 165

Option B: 165 x 104

Option C: 100

Option D: None of the above

Correct Answer: 165 ✔

Option A: 180o

Option B: 270o

Option C: 90o

Option D: 0o

Correct Answer: 0o ✔

Option A: RC + RL

Option B: RC || RL

Option C: RL

Option D: RC

Correct Answer: RC ✔

Option A: Sum of a.c. and d.c.

Option B: c. only

Option C: c. only

Option D: difference of a.c. and d.c.

Correct Answer: Sum of a.c. and d.c. ✔

Option A: 180o

Option B: 0o

Option C: 90o

Option D: 270o

Correct Answer: 180o ✔

Option A: 20 V

Option B: 5 V

Option C: 2 V

Option D: 10 V

Correct Answer: 10 V ✔

Option A: Coupling

Option B: Bypass

Option C: Leakage

Option D: None of the above

Correct Answer: Coupling ✔

Option A: The same as

Option B: More than

Option C: Less than

Option D: None of the above

Correct Answer: More than ✔

Option A: c. load line

Option B: c. load line

Option C: both d.c. and a.c. load lines

Option D: none of the above

Correct Answer: c. load line ✔

Option A: Two transistors

Option B: One transistor

Option C: Three transistor

Option D: None of the above

Correct Answer: One transistor ✔

Option A: Low

Option B: Very low

Option C: High

Option D: Very high

Correct Answer: High ✔

Option A: c.

Option B: c.

Option C: both d.c. and a.c.

Option D: none of the above

Correct Answer: c. ✔

Option A: Saturation point

Option B: Cut off point

Option C: Operating point

Option D: None of the above

Correct Answer: Operating point ✔

Option A: 20 kΩ

Option B: 2 kΩ

Option C: 10 kΩ

Option D: 5 kΩ

Correct Answer: 5 kΩ ✔

Option A: 1:1 ratio

Option B: Step-up

Option C: Step-down

Option D: None of the above

Correct Answer: Step-down ✔

Option A: Burning of transistor

Option B: Hum in the circuit

Option C: Excessive forward voltage

Option D: None of the above

Correct Answer: Hum in the circuit ✔

Option A: Amplitude

Option B: Intermodulation

Option C: Frequency

Option D: None of the above

Correct Answer: Frequency ✔

Option A: 1V

Option B: 100V

Option C: 20V

Option D: 10V

Correct Answer: 10V ✔

Option A: 20%

Option B: 80%

Option C: 40%

Option D: 50%

Correct Answer: 40% ✔

Option A: Class A power amplifier

Option B: Push-pull amplifier

Option C: Class C amplifier

Option D: None of the above

Correct Answer: Class A power amplifier ✔

Option A: 1 W

Option B: 2 W

Option C: 4 W

Option D: None of the above

Correct Answer: 1 W ✔

Option A: Class A

Option B: Class C

Option C: Class B

Option D: Class AB

Correct Answer: Class B ✔

Option A: 2

Option B: 7

Option C: 3

Option D: None of the above

Correct Answer: 7 ✔

Option A: 10 W

Option B: 4 W

Option C: 8 W

Option D: None of the above

Correct Answer: 4 W ✔

Option A: 10 W

Option B: 15 W

Option C: 5 W

Option D: 20 W

Correct Answer: 20 W ✔

Option A: 20 W

Option B: 40 W

Option C: 10 W

Option D: 80 W

Correct Answer: 20 W ✔

Option A: Cooling of the circuit

Option B: Impedance matching

Option C: Distortionless output

Option D: Good frequency response

Correct Answer: Impedance matching ✔

Option A: Biasing the circuit

Option B: Collector efficiency

Option C: To keep the transformer cool

Option D: None of the above

Correct Answer: Collector efficiency ✔

Option A: 5 kO

Option B: 20 kO

Option C: 100 kO

Option D: 10 kO

Correct Answer: 10 kO ✔

Option A: Either power or voltage

Option B: Only power

Option C: Only voltage

Option D: None of the above

Correct Answer: Either power or voltage ✔

Option A: Keep the amplifier cool

Option B: Protect from rusting

Option C: Prevent induction due to stray magnetic fields

Option D: None of the above

Correct Answer: Prevent induction due to stray magnetic fields ✔

Option A: Gives distorted output

Option B: Gives low power output

Option C: Requires a transformer

Option D: None of the above

Correct Answer: Gives distorted output ✔

Option A: RC

Option B: Direct

Option C: Impedance

Option D: Transformer

Correct Answer: Transformer ✔

Option A: AF amplifiers

Option B: Detectors

Option C: amplifiers

Option D: None of the above

Correct Answer: amplifiers ✔

Option A: Two transistors

Option B: Three transistors

Option C: One transistor

Option D: None of the above

Correct Answer: One transistor ✔

Option A: Mixer stage

Option B: Power stage

Option C: Detector stage

Option D: F stage

Correct Answer: Power stage ✔

Option A: C

Option B: A

Option C: B

Option D: AB

Correct Answer: C ✔

Option A: 5%

Option B: 50%

Option C: 30%

Option D: 25%

Correct Answer: 5% ✔

Option A: Transformer

Option B: RC

Option C: direct

Option D: Impedance

Correct Answer: Transformer ✔

Option A: Small

Option B: Very small

Option C: Large

Option D: None of the above

Correct Answer: Large ✔

Option A: 30%

Option B: 50%

Option C: 80%

Option D: 45%

Correct Answer: 50% ✔

Option A: At cut off point

Option B: At the middle

Option C: At saturation point

Option D: None of the above

Correct Answer: At the middle ✔

Option A: 50%

Option B: 90%

Option C: 5%

Option D: 5%

Correct Answer: 5% ✔

Option A: Class A

Option B: Class B

Option C: Class C

Option D: None of the above

Correct Answer: Class C ✔

Option A: Symmetrical

Option B: Single-ended

Option C: Reciprocating

Option D: Differential

Correct Answer: Single-ended ✔

Option A: Dual

Option B: Push-pull

Option C: Symmetrical

Option D: Differential

Correct Answer: Push-pull ✔

Option A: Small

Option B: Large

Option C: Very large

Option D: None of the above

Correct Answer: Small ✔

Option A: Low forward bias

Option B: Less battery consumption

Option C: More battery consumption

Option D: None of the above

Correct Answer: More battery consumption ✔

Option A: Maximum voltage appears across transistor

Option B: Maximum current flows

Option C: Maximum voltage appears across load

Option D: None of the above

Correct Answer: Maximum voltage appears across transistor ✔

Option A: 5 W

Option B: 33 W

Option C: 75 W

Option D: 1 W

Correct Answer: 1 W ✔

Option A: Push-pull amplifier

Option B: Preamplifier

Option C: Class A power amplifier

Option D: None of the above

Correct Answer: Push-pull amplifier ✔

Option A: Provide easy handling

Option B: Dissipate heat

Option C: Facilitate connections

Option D: None of the above

Correct Answer: Dissipate heat ✔

Option A: A

Option B: B

Option C: C

Option D: AB

Correct Answer: C ✔

Option A: Push-pull amplifier

Option B: Preamplifier

Option C: Class A power amplifier

Option D: None of the above

Correct Answer: Push-pull amplifier ✔

Option A: OR gate

Option B: AND gate

Option C: NOT gate

Option D: None of the above

Correct Answer: NOT gate ✔

Option A: NAND gate

Option B: OR gate

Option C: AND gate

Option D: None of the above

Correct Answer: NAND gate ✔

Option A: A & B

Option B: C & D

Option C: A & D

Option D: B & C

Correct Answer: A & B ✔

Option A: PLCC

Option B: QFP

Option C: PGA

Option D: BGA

Correct Answer: BGA ✔

Option A: OR operation

Option B: AND operation

Option C: NOT operation

Option D: None of the above

Correct Answer: NOT operation ✔

Option A: Input operation

Option B: Tristate output operation

Option C: Bi-directional I/O pin access

Option D: All of the above

Correct Answer: All of the above ✔

Option A: State Reduction

Option B: State Minimization

Option C: State Assignment

Option D: State Evaluation

Correct Answer: State Assignment ✔

Option A: OR gates

Option B: NOT gates

Option C: NAND gates

Option D: None of the above

Correct Answer: NAND gates ✔

Option A: 0

Option B: 1

Option C: Either 0 & 1

Option D: None of the above

Correct Answer: 0 ✔

Option A: NOT gate

Option B: OR gate

Option C: AND gate

Option D: None of the above

Correct Answer: NOT gate ✔

Option A: Stop signal

Option B: Invert input signal

Option C: Act as a universal gate

Option D: None of the above

Correct Answer: Invert input signal ✔

Option A: AND gate

Option B: NAND gate

Option C: NOT gate

Option D: None of the above

Correct Answer: NOT gate ✔

Option A: (00, 01, 10, 11)

Option B: (00, 10, 01, 11)

Option C: (00, 01, 11, 10)

Option D: (00, 10, 11, 01)

Correct Answer: (00, 01, 10, 11) ✔

A. NOT gate
B. OR gate
C. AND gate
D.None of the above

Correct Answer: NOT gate ✔

A. 19
B. 12
C. 27
D.21

Correct Answer: D.21 ✔

Option A: 2TTL

Option B: 5TTL

Option C: 8TTL

Option D: 10TTL

Correct Answer: 10TTL ✔

Option A: 10 CPS

Option B: 120 CPS

Option C: 12CPS

Option D: None of the above

Correct Answer: 12CPS ✔

Option A: I and II

Option B: II and III

Option C: III only

Option D: II and III

Correct Answer: I and II ✔

Option A: Weighted code

Option B: Cyclic redundancy code

Option C: Self-complementing code

Option D: Algebraic code

Correct Answer: Self-complementing code ✔

Option A: 1 at any input causes the output to be at logic 1

Option B: 1 at any input causes the output to be at logic 0

Option C: 0 any input causes the output to be at logic 0

Option D: 0 at any input causes the output to be at logic 1

Correct Answer: 1 at any input causes the output to be at logic 1 ✔

Option A: an astable MV

Option B: a bistable MV

Option C: a latch

Option D: a monostable MV

Correct Answer: a latch ✔

Option A: all the inputs to the gates are “1”

Option B: all the inputs are ‘0’

Option C: either of the inputs is “1”

Option D: all the inputs and outputs are complemented

Correct Answer: all the inputs and outputs are complemented ✔

Option A: have lower fabrication area

Option B: can be used to make any gate

Option C: consume least electronic power

Option D: provide maximum density in a chip

Correct Answer: can be used to make any gate ✔

Option A: 6

Option B: 32

Option C: 64

Option D: 128

Correct Answer: 6 ✔

Option A: TTLAS

Option B: CMOS

Option C: ECL

Option D: TTLLS

Correct Answer: ECL ✔

Option A: logic 0 and 1 are represented by 0 and positive voltage respectively

Option B: logic 0 and, -1 are represented by negative and positive voltages respectively

Option C: logic 0 voltage level is higher than logic 1 voltage level

Option D: logic 0 voltage level is lower than logic 1 voltage level

Correct Answer: logic 0 voltage level is lower than logic 1 voltage level ✔

Option A: 2n

Option B: 22 n

Option C: 2n-1

Option D: — 2n

Correct Answer: 22 n ✔

Option A: FFFF (hex)

Option B: 1111 (binary)

Option C: 7777 (octal)

Option D: All of the above

Correct Answer: FFFF (hex) ✔

Option A: 675

Option B: 275

Option C: 572

Option D: 573

Correct Answer: 275 ✔

Option A: (37)10

Option B: ( 69)10

Option C: (41 )10

Option D: — (5)10

Correct Answer: (37)10 ✔

Option A: Two’s complement only

Option B: Sign and magnitude and one’s complement only

Option C: Two’s complement and one’s complement only

Option D: All three representations

Correct Answer: All three representations ✔

Option A: less expensive

Option B: always more accurate and faster

Option C: useful over wider ranges of problem types

Option D: easier to maintain

Correct Answer: useful over wider ranges of problem types ✔

Option A: 10101.001

Option B: 10100.001

Option C: 10101.010

Option D: 10100.111

Correct Answer: 10101.001 ✔

Option A: Base 10

Option B: Base 16

Option C: Base8

Option D: Base 3

Correct Answer: Base 3 ✔

Option A: it is used by everybody

Option B: any logic function can be realized by NAND gates alone

Option C: all the minization techniques are applicable for optimum NAND gate realization

Option D: many digital computers use NAND gates

Correct Answer: any logic function can be realized by NAND gates alone ✔

Option A: floating point hardware is costly

Option B: it is slower than software

Option C: it is not possible to perform floating point addition by hardware

Option D: of no specific reason.

Correct Answer: floating point hardware is costly ✔

Option A: 3 V

Option B: 8 V

Option C: 6 V

Option D: 7 V

Correct Answer: 3 V ✔

Option A: Limit the maximum emitter current

Option B: Provide base-emitter bias

Option C: Limit the change in emitter current

Option D: None of the above

Correct Answer: Limit the change in emitter current ✔

Option A: Amplifier circuits

Option B: Switching circuits

Option C: Rectifier circuits

Option D: None of the above

Correct Answer: Switching circuits ✔

Option A: 25

Option B: 50

Option C: 100

Option D: 200

Correct Answer: 50 ✔

Option A: Remains the same

Option B: Decreases

Option C: Increases

Option D: None of the above

Correct Answer: Decreases ✔

Option A: 10 kO

Option B: 1 MO

Option C: 100 kO

Option D: 800 O

Correct Answer: 800 O ✔