Electronics and Communication Engineering - Measurements and Instrumentation

1. 

Assertion (A): CRO can be used to study waveshape accurately.

Reason (R): Input impedance of a CRO is very high.

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

Answer: Option A

Explanation:

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2. 

LVDT is used to measure

A. displacement
B. pressure
C. temperature
D. any of the above

Answer: Option A

Explanation:

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3. 

The scale of PMMC instrument is linear.

A. True
B. False

Answer: Option A

Explanation:

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4. 

Assertion (A): Thermistors are commonly used to measure hot spot temperatures in electric machines.

Reason (R): Thermistor has the advantages of high temperature coefficient, small size and high speed of response.

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

Answer: Option A

Explanation:

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5. 

Absolute instruments are used in

A. laboratories
B. industries
C. power houses
D. standard laboratories

Answer: Option D

Explanation:

No answer description available for this question. Let us discuss.

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