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GATE 2020: Champion Quiz on Analog Electronics

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Question 1

What is the effect of cascading the amplifier stages?

Question 2

Generally, the gain of transistor falls at high frequencies due to the

Question 3

For the MOSFET shown in the figure, the threshold voltage and The value of (in mA) is ___________.

Question 4

The trans conductance gm of the transistor shown in figure is 10 mS. The value of the input resistance RIN   seen by source is -

Question 5

In the circuit shown in figure (a), if the input is given as in figure (b). then the output will be (Assume that the time constant is very large)

Question 6

The input resistance of the circuit in figure is

Question 7

The following circuit has R = 10kΩ, C = 10μF. The input voltage is a sinusoid at 50Hz with an rms value of 10V. Under ideal conditions, the current is from the source is

Question 8

For the given n-channel MOSFET, determine the % decrease in the drain current at VGS = 1 V, if the n-channel between the two n-doped regions is removed.
Given that: IDSS = 8 mA, VP = -6 V, VT = 4 V.

Question 9

The feedback used in the circuit shown in figure can be classified as

Question 10

For the following oscillator circuit, the expression for the time period of oscillation can be given by (where = RC)

Question 11

In the voltage doubler circuit shown in the figure, the switch ‘S’ is closed at t = 0. Assuming diodes D1 and D2 to be ideal, load resistance to be infinite and initial capacitor voltages to be zero, the steady state voltage across capacitors C1 and C2 will be

Question 12

A clipper circuit is shown below.

Assume forward voltage drops of the diodes to be 0.7 Volt, the input- output characteristics of the circuit is
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Jul 13ESE & GATE EE