Question
In a permanent magnet moving coil instrument, the deflecting torque is directly proportional to-
The correct answer is
All of the options
Therefore, the deflecting torque T_d is directly proportional to the current I passing through the coil, assuming N, B, and A are constant. Therefore, the deflecting torque T_d is directly proportional to the flux density B in the air gap, assuming N, I, and A are constant. Therefore, the correct answer is All of the options.
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Important Questions from PMMC Instrument
Which of the following types of damping is used in a permanent magnet moving coil instrument?
- Which meter has the highest accuracy?
- Which of the following is NOT a valid advantage of PMMC instruments?
Where are MC type instruments used?
Which of the following materials is preferred for permanent magnet mostly used in instruments?
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