SSC JE Electrical 2019 with solution SET-2
Which of the following is an important feature of a 3-phase synchronous motor?

High starting torque
No starting torque
Low starting torque
Low starting current

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SSC JE Electrical 2019 with solution SET-2
The 2’s complement of 1010101 is

1101010
0101011
0101010
1110011

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SSC JE Electrical 2019 with solution SET-2
During the ______ period the power supply to the motor is cut-off and the train is allowed to run due to its own momentum?

Coasting
Braking
Free running
Notching up

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SSC JE Electrical 2019 with solution SET-2
The combined inductance of two coils connected in a series is 0.6H and 0.1H, depending on the relative directions of the currents to the coils. If one of the coils when isolated has a self-inductance of 0.2 H, then calculate the natural inductance?

0.125 H
1.5 H
0.15 H
0.015 H

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SSC JE Electrical 2019 with solution SET-2
Form Factor × Peak Factor =?

Average Value Maximum Value
RMS Value/Average Value
Maximum Value/Average Value
Maximum Value/RMS Value

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