Electronics and Communication Engineering - Measurements and Instrumentation - Discussion

Discussion Forum : Measurements and Instrumentation - Section 7 (Q.No. 38)
38.
Which of these instrument does not have a control spring?
Moving iron ammeter
PMMC ammeter
Electrostatic voltmeters
Power factor meter
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
1 comments Page 1 of 1.

Kishore said:   9 years ago
No, control torque required in power factor meter.

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