SSC JE Electrical 2019 with solution SET-1
 What is the reason behind using a centrifugal switch in a single-phase induction motor?

To cut-off the starting winding at an appropriate instant
To protect the motor from overloading
To out in the capacitor during running conditions
To improve the starting performance of the motor

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SSC JE Electrical 2019 with solution SET-1
 The resistive component of the rotor with resistance R2 offered to the backward rotating flux wave in a single-phase motor runs with slip s is given as

R2 ⁄ (1 + S)
R2 ⁄ S
R2 ⁄ (1 − S)
R2 ⁄ (2 − S)

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SSC JE Electrical 2019 with solution SET-1
 Which of the following should be used under no-load conditions?

Rewireable fuse
Circuit breaker
Air-break switch
Isolator

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SSC JE Electrical 2019 with solution SET-1
 The law that explains about the economic size of a conductor is:

Lamberts law
Kelvin’s law
Newton’s law
Faraday’s law

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SSC JE Electrical 2019 with solution SET-1
 In a transmission line, the voltage regulation is negative whenever receiving end voltage Vs

Less than the sending end voltage
Greater than the sending end voltage
Half of the sending end voltage
Equal to the sending end voltage

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