Electronics and Communication Engineering - Exam Questions Papers

11. 

What is the characteristic of a good control system?

A. Sensitive to parameter variation
B. Insensitive to input command
C. Neither sensitive to parameter variation nor sensitive to input commands
D. Insensitive to parameter variation but sensitive to input commands

Answer: Option D

Explanation:

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12. 

What is the minimum value of VSWR that may exist on a transmission line?

A. Less than zero
B. Zero
C. One
D. 10

Answer: Option C

Explanation:

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13. 

Assertion (A): For same drain current rating N-channel MOSFET occupies more area than p-channel MOSFET.

Reason (R): Electron mobility is much higher than hole mobility.

A. Both A and R are individually true and R is the correct explanation of A
B. Both A and R are individually true but R is not the correct explanation of A
C. A is true but R is false
D. A is false but R is true

Answer: Option D

Explanation:

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14. 

What does a link budget for satellite communication include?

A. Total cost of satellite
B. Cost of satellite plus launch vehicle
C. Signal and noise levels is dB
D. Margins of error permitted

Answer: Option C

Explanation:

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15. 

Which one of the following materials is used for making permanent magnets?

A. Steel
B. Carbon
C. Carbon-Steel
D. Graphite

Answer: Option C

Explanation:

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