SSC JE Electrical 2019 with solution SET-1
If the field of the synchronous motor is under excited the power factor will be:

Unity
Zero
Lagging
Leading

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SSC JE Electrical 2019 with solution SET-1
Find H = _____ A/m at the center of a circular coil of diameter 1 m and carrying a current of 2A

4 A/m
1 A/m
2 A/m
8 A/m

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SSC JE Electrical 2019 with solution SET-1
 Let T be the net torque developed by the rotor runs at ω rad/s. What is the mechanical power developed?

Pmech = ωT
Pmech = (ωT)/60
Pmech = (2πωT)
Pmech = (2πωT)/60

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SSC JE Electrical 2019 with solution SET-1
 Which of the following is the correct relation regarding coupled coils?

M > (L1L2)0.5
M ≤ (L1L2)0.5
M = (L1 − L2)/2
M = (L1 + L2)/2

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SSC JE Electrical 2019 with solution SET-1
  In a capacitor start single phase induction motor the current in the:

Starting winding lags the voltage
The main winding leads the voltage
Supply lines lead the voltage
Starting winding leads the voltage

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SSC JE Electrical 2019 with solution SET-1
 Two decimal coils A and B of 1000 turns each lies in the parallel plane such that 80% of the flux produced by one coil links with the other. If a current of 5A flowing in A produces a flux of 0.05 mWb, then the flux linking with coil B is:

4 mWb
0.04 mWb
0.004 mWb
0.4 mWb

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