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ESE-2018 Electrical Engineering Quiz 9

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Question 1

Pulses of definite width can be obtained from irregular shaped pulses:

Question 2

Which one of the following statements is correct? The rise time of an amplifier is

Question 3

An amplifier has an open loop gain of 1000 ± 10. Negative feedback is provide such that the gain variation remains within 0.1%. What is the amount of feedback βF?

Question 4

In the order to obtain repetitive pulses of unequal mark space one can use:
1) A voltage comparator fed with a triangular wave signal and dc voltage.
2) An astable multi-vibrator
3) A mono-stable multi-vibrator fed with a square wave input

Question 5

fT is the frequency at which the short circuit.

Question 6

A negative-feedback closed-loop system is supplied to an input of V. The system has a forward gain of 1 and a feedback gain of 1. What is the output voltage?. Assume input voltage is 5 V.

Question 7

The circuit shown below is a

Question 8

The noise figure of a lossy network at room temperature equals the
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Feb 5ESE & GATE EE