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SSC JE Electrical 2018 with solution SET-1

SSC JE Electrical 2018 with solution SET-1
 Calculate the induced emf (in V) in the inductor of a series RL circuit having the inductance of 1.8 H and resistance of 90 Ohms after 20 milli-seconds when supplied by a 20 V DC source

7.36
10.03
14.76
20

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SSC JE Electrical 2018 with solution SET-1
The speed of the ceiling fan is about

Upto 450 RPM
Upto 10 RPM
Upto 10000 RPM
Upto 200 RPM

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

The ceiling fan use single-phase induction motor ( capacitor start and capacitor Run Motor) the speed of ceiling fan is about 450 RPM and the supply rating is between 55 – 120 Watts
 

SSC JE Electrical 2018 with solution SET-1
In a synchronous motor which loss varies with the load?

Core Loss
Copper Loss
Windage loss
Bearing friction Loss

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SSC JE Electrical 2018 with solution SET-1
 In the large machine, the flat copper strips known as

Windings
Risers
Bushes
Either of these

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

In large machines, flat copper strips known as risers are used forming clip connections to armature bar conductors as shown in Figure.
 


SSC JE Electrical 2018 with solution SET-1
 Determine the phase angle (in degrees) of a balanced 3-phase star connected system, if the first and the second wattmeter show reading of 200 W and 1200 W respectively

65
84
51
78

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SSC JE Electrical 2018 with solution SET-1
 A delta connected 3-phase circuit has three resistance of 36 Ohms in each phase. What is the value of per phase resistance (in ohms) of the equivalent star connected circuit?

12
84
108
36

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