SSC JE Electrical 2018 with solution SET-1
 Which of the following statement is TRUE?

The equivalent resistance in series combination is larger than the largest resistance in the combination
The equivalent resistance in series combination is equal to the largest resistance in the combination
The equivalent resistance in series combination is equal to the smallest resistance in the combination
The equivalent resistance in series combination is smaller than the largest resistance in the combination

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SSC JE Electrical 2018 with solution SET-1
 A three-phase synchronous motor will have

Three slip-rings
No slip-rings
Two slip-rings
One slip-ring

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SSC JE Electrical 2018 with solution SET-1
The ripple factor is

Peak Value/DC Value
RMS value/DC Value
RMS Value/Peak Value
Peak Value/RMS Value

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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
5.65
6.69
6.67

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SSC JE Electrical 2018 with solution SET-1
 Determine the maximum flux density (in T) of a material having eddy current coefficient of 2, the thickness of 4 mm, the volume of 20 cu.meter, which is supplied by the frequency of 50 Hz when the material has eddy current loss of 6 W

1.21
1.94
2.24
3.34

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SSC JE Electrical 2018 with solution SET-1
If the centrifugal switch does not open at 70 to 80 percent of a synchronous speed of the motor, it would result in

None of these
Damage to the starting winding
Damage to the centrifugal switch
Overloading of running winding

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