Physics · Electrical Instruments
What is the primary purpose of copper shading rings in an induction-type single-phase energy meter?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1To produce a controlling torque
- 2To produce an external magnetic force
- 3To produce a phase difference between the flux and voltage in the pressure coil✓
- 4To produce eddy current damping
Correct answer
To produce a phase difference between the flux and voltage in the pressure coil
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