DMRC Electronics Engineering Paper-1 2016

Instructions

For the following questions answer them individually

Question 81

The transconductance of a JFET is computed at constant $$V_{DS}$$ by:

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Question 82

To find current in a resistance connected in a network, Thevenin's theorem is used $$V_{TH}$$ = 20 V and $$R_{TH}$$ = 5 Ω. The current through the resistance:

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Question 83

Superposition theorem is not applicable to network containing:

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Question 84

In a microwave test bench, why is the microwave signal amplitude modulated at 1 kHz?

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Question 85

The directive gain of an antenna:

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Question 86

An amplifier without feedback has a voltage gain of 50, input resistance 1 kΩ and output resistance of 2.5 kΩ. The input resistance of the current-shunt negative feedback amplifier using the above amplifier with a feedback factor of 0.2 would be:

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Question 87

In amplitude modulation AM, if modulation index is more than 100% then:

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Question 88

The use of non-uniform quantization leads to:

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Question 89

A PD controller is used to compensate a system. Compared to the uncompensated system, the compensated system has:

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Question 90

Which of the following is an inherent property of an optical signal and cannot be eliminated even in principle?

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