IES Prelims Paper 2 Electronics and Telecommunication Engineering Question Paper 2025 (08-June-2025)

Question 1

Which one of the following is the maximum reverse voltage that can be applied to the P-N junction?

Accepted Answer

Peak inverse voltage

Answer

Maximum forward voltage

Answer

Maximum average voltage

Answer

Respective peak forward voltage

Question 2

The common-base DC current gain of a transistor is 0.967. If the emitter current is 10 mA, the base current will be

Accepted Answer

0.33 mA

Answer

0.53 mA

Answer

0.44 mA

Answer

0.24 mA

Question 3

In actual MOSFET characteristic, a non-zero slope exists beyond the saturation point. For the saturation region, i.e., $(V_{DS} > V_{DS\ (\text{sat})})$, the effective channel length decreases and this phenomenon is called

Accepted Answer

channel length modulation

Answer

base width modulation

Answer

channel width modulation

Answer

base length modulation

Question 4

MOSFETs have characteristics similar in form to those of JFETs. Hence MOSFETs are also known as

Accepted Answer

Insulated Gate Field Effect Transistors (IGFETs)

Answer

Depletion MOSFETS (D-MOSFETs)

Answer

Enhancement MOSFETS (E-MOSFETs)

Answer

p-channel MOSFETS

Question 5

A transistor has α = 0.995 and if the base current is 200 μΑ, the value of the emitter current will be

Accepted Answer

40 mA

Answer

30 mA

Answer

35 mA

Answer

45 mA

IES Prelims Paper 2 Electronics and Telecommunication Engineering Question Paper 2025 (08-June-2025)

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