Question

Creeping in a single phase induction type energy metre may be due to

Answer 1

Over comperresion for friction, vibration,overvoltage

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Answer 2

Answer:

Creeping in a single-phase induction type energy metre may be due to overvoltage across the voltage coil.

Explanation:

• When just the pressure coil is stimulated and no current is flowing through the current coil (i.e. under no-load conditions), the energy metre rotates slowly but continuously known as creeping.
• Creeping happens because of different reasons like excess friction adjustment, the supplied voltage exceeding the standard voltage i.e overvoltage across the voltage coil, unreliable magnetic field and Vibration.
• There are different methods through which creeping can be avoided such as Creeping can be stopped if two identical-sized holes are drilled on the opposite side of the spindle.
• The disc will stop when one of the holes passes beneath the shunt magnet.

Thus, Creeping in a single-phase induction type energy metre may be due to overvoltage across the voltage coil.

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