Analog Electronics MCQ Questions & Answers

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Learn Analog Electronics MCQ questions & answers are available for a Electronics and Communications Engineering(ECE) students to clear GATE exams, various technical interview, competitive examination, and another entrance exam. Analog Electronics MCQ question is the important chapter for a Electronics and Communications Engineering(ECE) and GATE students. Page-3 section-2

Each section contains 100 MCQs on Analog Electronics .

The voltage divider bias circuit is used in amplifiers quit often because it

A) Limits the ac signal going to the base B) Makes the operating point almost independent of β C) Reduce the dc base current D) Reduces the cost of the circuit

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

The zener diode shown in following figure is temperature compensated and current gain β of transistor is very high. If current through 100 ohm resistor is 55 mA at 25°C, what is the approximate current through it at 65°C
Analog Electronics mcq question image

A) 55 mA B) 54 mA C) 56 mA D) 100 mA

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Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

The output time period of a transistorized monostable multivibrator using base resistance R_b and coupling capacitor C_b for the output transistor is given by

A) R_bC_b B) 0.69R_bC_b C) 2R_bC_b D) 1.38R_bC_b

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

In a BJT, the I_c = 30 mA. If β = 100, the base current approximately equals

A) 0.03 mA B) 300 mA C) 0.3 mA D) 30 mA

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Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

Negative voltage feedback in amplifiers
S1: Improves gain stability
S2: Reduces non linear distortion
S3: Improves frequency response
S4: Increase circuit stability
S5: Increase Input Impedance and decrease output impedance

A) Only S1 and S2 are correct B) Only S2 and S4 are correct C) Only S3 and S5 are correct D) All except S3 are correct E) All are correct

Discuss

Answer & Solution

Answer: Option E

No explanation is given for this question. Let's Discuss on Board

Transformer utilization factor of half wave rectifier is

A) 0.287 B) 0.693 C) 0.812 D) 0.48

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Answer & Solution

Answer: Option A

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An output signal of a power amplifier has amplitudes of 2.5 V fundamental, 0.25 V second harmonic and 0.1 V third harmonic. The total percentage harmonic distortion of the signal is

A) 12.8% B) 10.8% C) 6.4% D) 1.4%

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Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

The voltage gain A_v = $$\frac{{{{\text{V}}_0}}}{{{{\text{V}}_{\text{i}}}}}$$ of the JFET amplifier shown in the figure is
Analog Electronics mcq question image

(Assume C₁, C₂ and C_s to be very large)

A) +18 B) -18 C) +6 D) -6

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Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board

The circuit shown above is:
Analog Electronics mcq question image

A) Bi-stable multi-vibrator B) Mono-stable multi-vibrator C) Free running multi-vibrator D) Ramp generator

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

If the bias current in the IC-741 op-amp is I_Q = 19 µA and the internal frequency compensation capacitor C₁ = 30 pF, the slew rate of the op-amp will be nearly

A) 1.58 V/µs B) 1.26 V/µs C) 0.93 V/µs D) 0.63 V/µs

Discuss

Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board

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Analog Electronics MCQ Questions & Answers | ECE