Which of the following are integrating instruments?
A. Ammeters
B. Voltmeters
C. Wattmeter's
D. Ampere-hour and watt-hour meters
Answer:D
Which of the following are integrating instruments?
A. Ammeters B. Voltmeters C. Wattmeter's D. Ampere-hour and watt-hour meters
Explanation: Integrating Instruments: