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

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

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SSC JE Electrical 2019 with solution SET-1
 In the full-wave rectifier circuit shown in the figure, the diodes that conduct when the positive half-wave of AC signal applied are

D1, D2
D3, D4
D4, D1
D2, D3

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

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

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SSC JE Electrical 2019 with solution SET-1
 Which of the following lamps has the shortest/less life span in working hours?

Sodium vapor lamp
Incandescent lamp
Fluorescent lamp
Mercury vapor lamp

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