SSC JE Electrical 2018 with solution SET-1
The speed of a synchronous motor can be changed by

Changing the frequency
Changing the supply Terminals
Changing the load
Changing the supply voltage

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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

5.65
6.69
6.67
4.64

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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
PMMC type Instruments have uniformly divided scale
Stray magnetic errors are small in these types of instruments
The cost of PMMC instruments is high

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SSC JE Electrical 2018 with solution SET-1
A PMMC type voltmeter, having a full-scale reading of 250 V and an internal resistance of 400 kilo-ohms, is connected with the series resistance of 100 kilo-ohms. Calculate the sensitivity of the voltmeter (in Ohms/Volts)

2000
20000
24000
2400

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SSC JE Electrical 2018 with solution SET-1
 If a fixed amount of power is to be transmitted over a certain length with the fixed power loss then_____,

The weight of the conductor required will be inversely proportional to the voltage and that of the power factor of the load
The weight of the conductor will be proportional to the square of the voltage and directly proportional to the power factor of the load.
The weight of the conductor required will be inversely proportional to the square of the voltage and that of the power factor of the load
The weight of the conductor required will be proportional to the voltage

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