Electronics and Communication Engineering - Electronic Devices and Circuits

46. 

Which of the following exhibits negative resistance in a portion of its characteristics?

A. Tunnel diode
B. Zener diode
C. JFET
D. MOSFET and tunnel diode

Answer: Option A

Explanation:

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47. 

The emission of light is LED due to

A. emission of holes
B. emission of electrons
C. generation of electromagnetic radiations
D. conversion of heat energy into illumination

Answer: Option C

Explanation:

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48. 

For bipolar transistor

A.
B.
C.
D.

Answer: Option A

Explanation:

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49. 

The sum of two or more arbitrary sinusoidal is

A. always periodic
B. periodic under certain conditions
C. never periodic
D. periodic only if all the sinusoidals are identical in frequency and phase

Answer: Option D

Explanation:

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50. 

Which of the following is used as a passive component in electronic circuits?

A. Tunnel diode
B. Capacitor
C. Transistor
D. Vacuum tube

Answer: Option B

Explanation:

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