Question

What are the advantages and disadvantages of Dynamometer wattmeter? Write the different types of Dynamometer wattmeters.

Hint:

Dynamometer wattmeters measure true power in both AC and DC circuits using the interaction of magnetic fields.

Answer 1

Dynamometer Wattmeter: Advantages
Accurate measurement of both AC and DC power.
Broad frequency response range.
Measures true power, independent of power factor.
High sensitivity for measuring low power levels. Dynamometer Wattmeter: Disadvantages
Higher cost than alternative wattmeters.
Friction losses from moving parts may impact accuracy.
Requires delicate handling due to fragility.
Needs periodic maintenance. Dynamometer Wattmeter: Classifications
Single-phase
Polyphase
Portable