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ISRO 2023 Quiz 3

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Question 1

Consider the following statements regarding FET amplifier configurations:

1. For common-source and common-drain configurations, Rin = R1 R2, be selected to be large' during bias design.

2. For the common-drain configuration, the voltage gain is generally less than unity or near unity.

3. For the common-gate configuration, the current gain cannot be larger than unity.

Which of the above statements is/are correct?

Question 2

An amplifier has a bandwidth of 500 kHz and voltage gain of 100 . What is the amount of negative feedback if the bandwidth is extended to 5 MHz?

Question 3

In a CMOS device during transition, if capacitance of MOS device is 1 μF, frequency of operation is 1 GHz and VDD is 5 V, then dynamic losses are_____ units.

Question 4

An amplifier has an open loop voltage gain of 1000 . If 10% negative voltage series feedback is used, what is the closed loop voltage gain?

Question 5

When a producer allows 36% commission on the retail price of his product, he earns a profit of 8.8%. What would be his profit percent if the commission is reduced by 24%?
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