Question

A dynamometer type wattmeter responds to: 1) average value of active power 2) average value of reactive power 3) peak value of active power 4) peak value of reactive power

Answer 1

answer is A).average value of active power

Answer 2

Option 1 is the answer

Average value of active power:

• A dynamometer wattmeter is a form of moving coil wattmeter.
• In this case, however, the operational field is generated by a stationary coil rather than a permanent magnet.
• A dynamometer type wattmeter is one that uses fixed coils to generate the working field.
• The field produced by the current-carrying moving coil strives to align with the field produced by the current-carrying fixed coil in these wattmeters, causing a deflecting torque to be applied to the moving system.
• As a result, there is deflection in the pointer.