Electronics and Communication Engineering - Measurements and Instrumentation

26.
A megger has a hand driven dc generator.
True
False
Answer: Option
Explanation:
No answer description is available. Let's discuss.

27.
A hot wire instrument is not affected by stray magnetic fields.
True
False
Answer: Option
Explanation:
No answer description is available. Let's discuss.

28.

Assertion (A): A ballistic galvanometer is used to measure charge.

Reason (R): In a flux meter, the damping is large.

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.

29.

Assertion (A): A transducer needs an output measuring or display device for measuring a non electrical quantity.

Reason (R): In some transducers the output voltage is too small and needs amplification before it can be measured.

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.

30.
Acoustic strain gauges
have good linearity of measurement
do not have long term stability
have a large range of measurement
have an accuracy range of 0.1-1% depending on environment
Answer: Option
Explanation:
No answer description is available. Let's discuss.