UP polytechnic Lecturer (EE) Quiz 37

The disc in the energy meter should be __________ for eddy current damping.

In wein’s bridge the formula for frequency f is

A 10 pole 25 Hz alternator is directly coupled to and is driven by 60 Hz synchronous motor then the number of poles in a synchronous motor are?

The no load input power to a transformer is practically equal to ____ loss in the transformer.

An overcurrent relay having a current setting of 125% connected to a supply circuit through a current transformer of ratio 500/1. The pick up value is

Pure silicon is

Statement 1: Static magnetic field is conservative in nature.

Statement 2: For static magnetic field,

In Nuclear power plant which material is/are used of coolant?

Varnishes protect the insulating materials against

For an Induction machine, Reduced voltage starting and Autotransformer starting is used. If the starting current is reduced by factor k & k² respectively. The resultant starting Torque reduced by factor respectively.