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Electronics and Communication Engineering - Measurements and Instrumentation - Discussion

Discussion Forum : Measurements and Instrumentation - Section 5 (Q.No. 1)
Measurements and Instrumentation
1.

Assertion (A): If the resistance of shunt of an ammeter is increased, the range of ammeter is reduced.

Reason (R): If the series resistance of a voltmeter is increased, the range of voltmeter is increased.

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.
Discussion:
5 comments Page 1 of 1.
Rakesh patel said:   10 years ago
Both statement are individually true.
Shubham dhole said:   8 years ago
Basically the shunt resistance is use to bypass the current. As the shunt value is inc. The current pass through the shunt is dec. Due to which ammeter range is dec.
MRK said:   8 years ago
@Shubham Dhole.

If we increased shunt resistance, value of the resistance is decreased so current will be increased. Hence ammeter range will be increase.

So answer may be D.
ITE said:   8 years ago
Practically not able to decreased range of ammeter due to PMMC in ammeter.
Manj said:   8 years ago
B is correct according to me.
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