AE & JE EE Quiz: Electrical and Electronic Instrumentation Booster Quiz-2

If current and potential coils of a wattmeter are interchanged, then after energizing circuit

Low load or friction adjustment in single phase induction type energy meter is done

In resistance standards, bifilar winding arrangement is used to reduce?

Controlling torque in a megger is provided by

The controlling torque in single phase power factor meter is given by

Consider the following statements regarding creeping in energy meters

1. It is slow but continuous rotation of disc even no voltage is applied across pressure coil and current coil is energized

2. The main reason for creeping is over compensation for friction.

3. To prevent creeping, copper shading, band is provided on central limb.

Which of the above statements are NOT true?

Which of the following AC bridge is used to measure capacitance ?

Which of the following AC bridge is used to measure frequency?

An energy meter makes 100 revolutions of its disc per unit of energy. The number of revolutions made by the disc during one hour when connected across 210V source and drawing a current of 20A at 0.8 p.f. leading is