Electronics and Communication Engineering - Measurements and Instrumentation - Discussion

Discussion Forum : Measurements and Instrumentation - Section 2 (Q.No. 47)
47.
An induction wattmeter can be used for
dc only
50 Hz ac only
both ac and dc
high frequency ac only
Answer: Option
Explanation:

Induction principle is valid for ac only. Induction Instruments are calibrated for 50 Hz ac.

Discussion:
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