Electronics and Communication Engineering - Electronic Devices and Circuits

11. 

No load d.c. output will be least in case of

A. half wave rectifier
B. full wave rectifier
C. bridge rectifier
D. three phase full wave rectifier

Answer: Option A

Explanation:

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12. 

When an electron breaks a covalent bond and moves away,

A. a hole is created
B. a proton is also lost
C. atom becomes an ion
D. rest of the electron move at a faster rate

Answer: Option A

Explanation:

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13. 

A photo diode is

A. forward biased
B. reverse biased
C. either forward or reverse biased
D. unbiased

Answer: Option B

Explanation:

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14. 

Germanium and Si phosphorus have their maximum spectral response in the

A. infrared region
B. ultraviolet region
C. visible region
D. X-ray region

Answer: Option B

Explanation:

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15. 

In which condition does BJT behave like a closed switch?

A. Cut off
B. Saturation
C. Forward active
D. Reverse active

Answer: Option B

Explanation:

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