Electronics and Communication Engineering - Measurements and Instrumentation - Discussion

Discussion Forum : Measurements and Instrumentation - Section 4 (Q.No. 39)
39.
Which of the following methods can be used to measure power in a single phase circuit without using wattmeter?
  1. One voltmeter, one ammeter
  2. Two voltmeters, two ammeter
  3. Three voltmeters
  4. Three ammeters
1 and 2 only
2 and 4 only
1 and 3 only
3 and 4 only
Answer: Option
Explanation:

Single phase power can be measured using either 3 voltmeters or 3 ammeters.

Discussion:
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