Electronics and Communication Engineering - Electronic Devices and Circuits

1. 

The O/P char, of a FET is given in the figure. In which region is the device biased for small signal amplification?

A. AB
B. BC
C. CD
D. BD

Answer: Option B

Explanation:

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2. 

Photoelectric effect occurs only in semiconductors and not in metals.

A. True
B. False

Answer: Option B

Explanation:

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3. 

Which of these has peak and valley points in v-i curve?

A. Tunnel diode
B. Zener diode
C. PIN diode
D. Schottky diode

Answer: Option A

Explanation:

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4. 

The scaling factor of an MOS device using constant voltage scaling model, the gate area of the device will be scaled as

A. 1/a
B. 1/a2
C. 1/a3
D. 1/a4

Answer: Option D

Explanation:

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5. 

A full wave bridge rectifier is supplied voltage at 50 Hz. The lowest ripple frequency will be

A. 400 Hz
B. 200 Hz
C. 100 Hz
D. 50 Hz

Answer: Option C

Explanation:

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