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Electronics and Communication Engineering - Measurements and Instrumentation - Discussion

Discussion Forum : Measurements and Instrumentation - Section 3 (Q.No. 49)
Measurements and Instrumentation
49.

Assertion (A): Strain measurement using strain gauge invariably requires a dummy strain gauge.

Reason (R): The resistance of strain gauge depends on temperature.

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:

The dummy strain gauge compensates the error due to change in temperature because temperature affects both the active and dummy strain gauges equally.

Discussion:
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