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Electronics and Communication Engineering - Measurements and Instrumentation

Exercise : Measurements and Instrumentation - Section 9
21.
Gauge factor of a strain gauge is
unit change in resistance per unit change in length
change in resistance per unit change in length
unit change in length per unit change in resistance
none of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
22.

Assertion (A): Capacitance effect can be used to measure thickness of sheets, displacement and pressure.

Reason (R): Capacitance between two plates depends on the area of plates, distance between plates and permittivity of medium.

Both A and R are true and R is correct explanation of A
Both A and R are true but R is not correct explanation of A
A is true R is false
A is false R is true
Answer: Option
Explanation:
No answer description is available. Let's discuss.
23.
The total insulation resistance consists of insulation volume resistance and surface leakage resistance.
True
False
Answer: Option
Explanation:
No answer description is available. Let's discuss.
24.

Assertion (A): Energy meters use induction principle.

Reason (R): Induction wattmeter is less accurate than a dynamometer wattmeter.

Both A and R are true and R is correct explanation of A
Both A and R are true but R is not correct explanation of A
A is true R is false
A is false R is true
Answer: Option
Explanation:
No answer description is available. Let's discuss.
25.
A dynamometer wattmeter can be used for
dc only
ac only
dc and 50 Hz ac
dc and high frequency ac
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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