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Analog Electronics
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Q301

In the following limiter circuit, an input voltage V_i = 10 sin 100 πt is applied. Assume that the diode drop is 0.7 V when it is forward biased. The zener breakdown voltage is 6.8 V
Analog Electronics mcq question image

Analog Electronics mcq question image

The maximum and minimum values of the output voltage respectively are

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Q302

Which power amplifier conducts from 0° to 180°

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Q303

For the Schmitt trigger circuit shown in figure, assuming diodes and op-amp are ideal, the value of lower and upper threshold points of voltage transfer characteristics, respectively, are
Analog Electronics mcq question image

Analog Electronics mcq question image

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Q304

A small signal voltage amplifier in common emitter configuration was working satisfactorily. Suddenly its emitter bypass capacitor (C_E) got disconnected. Its:
1. Voltage gain will decrease
2. Voltage gain will increase
3. Bandwidth will decrease
4. Bandwidth will increase
Which of these statements are correct?

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Q305

A Schmitt trigger circuit achieves hysteresis by utilizing

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Q306

Match the following.

List-I	List-II
a. Hartley	1. Low frequency oscillator
b. Wien-bridge	2. High frequency oscillator
c. Crystal	3. Stable frequency oscillator

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Q307

Current stability of a CC amplifier can be increased by

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Q308

Three identical amplifiers with each one having a voltage gain of 50, input resistance of 1 kΩ and output resistance of 250 Ω, are cascaded. The open circuit voltage gain of the combined amplifier is

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Q309

In a particular biasing circuit, the value of R_E is about . . . . . . . .

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Q310

In the circuit shown below, the switch was connected to position 1 at t < 0 and at t = 0, it is changed to position 2. Assume that the diode has zero voltage drop and a storage time t_s. For 0 < t ≤ t_s.V_Rs given by (all in Volts)
Analog Electronics mcq question image

Analog Electronics mcq question image

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Q311

Which one of the following statements regarding slew rate is correct?

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Q312

The transistor as shown in the circuit is operating in:
Analog Electronics mcq question image

Analog Electronics mcq question image

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Q313

By the use of which of the following the PPM can be converted to PWM?

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Q314

If a common emitter amplifier with an emitter resistance R_e has an overall trans-conductance gain of -1 mA/V, a voltage gain of -4 and desensitivity of 50, then the value of the emitter resistance R_e would be:

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Q315

For the transistor amplifier in the given figure, the voltage amplification is approximately.
Analog Electronics mcq question image

Analog Electronics mcq question image

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Q316

In the circuit shown below, if R_C = 10 kΩ, R_L = 10 kΩ, β = 100, input signal voltage is 1 mV r.m.s. The output voltage is:
Analog Electronics mcq question image

Analog Electronics mcq question image

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Q317

RC oscillator is basically a-

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Q318

In an amplifier the increase in gain is 12 dB if the frequency is doubled. What will be the gain if frequency is increased 10 times?

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Q319

In the circuit shown in the figure, if e₁ = 2 V, e₂ = 5 V, e₃ = 1 V and E = 2 V, then which one of the diodes will be conducting and what will be the e₀?
Analog Electronics mcq question image

Analog Electronics mcq question image

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Q320

If an amplifier with gain of -1000 and feedback factor of β = -0.1 had a gain change of 20% due to temperature, the change in gain of the feedback amplifier would be

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