SSC JE Electrical 2018 with solution SET-1
 A 40KVA transformer has a core loss of 450 W and total loss of 800 W. Find the copper loss for Maximum efficiency

800 W
350 W
300 W
450 W

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SSC JE Electrical 2018 with solution SET-1
 What will be the voltage (in V) across an 8H inductor, when the rate of change of current flowing through it is 0.5A/sec

2
6
4
8

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SSC JE Electrical 2018 with solution SET-1
The motor used on a small lathe is usually

Single-phase capacitor run Motor
D.C shunt Motor
3-Phase Synchronous Motor
Universal Motor

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SSC JE Electrical 2018 with solution SET-1
 Determine the magnitude of EMF (in V) induced between the axis of rotation and the rim of the disc, when the disc of radius 10 cm rotates with an angular velocity of 60 revolutions per second and placed in the magnetic field of 3 T acting parallel to the rotation of the disc

4.64
6.67
6.69
5.65

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SSC JE Electrical 2018 with solution SET-1
 Which one of the following statement is NOT true about PMMC type instruments?

These instruments are suitable for both AC and DC currents
The cost of PMMC instruments is high
PMMC type Instruments have uniformly divided scale
Stray magnetic errors are small in these types of instruments

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