Question
Download Solution PDFHow many pressure coils and current coils, respectively, are present in a three-phase dynamometer wattmeter?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFThe correct answer is option 4):(There are two pressure coils and two current coils).
Concept:
Dynamometer type three-way wattmeter:
- Trikala wattmeter is a dynamometer type and consists of two separate wattmeters connected together.
- There are two current coils (CC) and two pressure coils (PC). In two wattmeter system, the total power consumed will be the sum of the readings of both the wattmeters, which has to be calculated manually.
- Whereas, in a tricycle electrodynamometer wattmeter, the total power consumption is directly represented, as the power consumption observed by both the elements is being integrated internally.
- In Trikala wattmeter, torque is developed on both the elements.
- The value of the torque on each element is proportional to the power that passes through it. The total torque on a three-watt wattmeter is the sum of the torques on an individual wattmeter.
Last updated on Jun 16, 2025
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