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Lower the self inductance of a coil

A) More will be the weber turns

B) More will be the emf induced

C) Lesser the flux produced by it

D) Smaller the delay in establishing steady current through it

It is difficult to magnetise steel because of its
A) High density B) High retentivity
C) Low permeability D) High permeability

The value of dielectric constant for vacuum is taken as
A) 1 8) 0 Cc) 4 D) 10

To reduce the error in voltmeter and ammeter due to friction torque
A) The torque weight ratio must be small

B) The weight of moving system must be made as large as possible
C) The torque weight ratio must be large

D) The torque of moving system must be small

. The controlling torque ठ of a Moving Iron instrument is

A) 109 8) 6 ©) ۵ 0) ۵
Correction factor of wattmeter for lagging load is
2 0080 8 cosB
) 0058 cos(o - 8( ) ‏وومہ‎ cos(B - ¢)
೦೦೨6 005]
© ०56 costo +B) 0) cos cos(f + 4)

When 3 phase power is measured by 2 wattmeter method one of the wattmeter will read
zero power ९

A) If the load power factor is unity

8) If the load power factor is zero

C) If the load power factor is less than 0.5

0) If the load power factor is 0.5

Light load compensation of integrated type energy meter is done by
A) Shading band B) Breaking magnet
C) Shading loop D) Lag plate

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