Assertion ( A ): A power factor meter operates on dynamometer principle.
Reason ( R ): A power factor meter does not have a control spring.
A. Both A and R are true and R is correct explanation of A
B. Both A and R are true but R is not correct explanation of A
C. A is true R is false
D. A is false R is true
Show Answer
Answer: B
Share your understanding of this question with the correct explanation.