SSC JE Electrical 2019 with solution SET-1
 Which of the following is the function of the moderator in a nuclear reactor?

To slow down the fast-moving electron
Controlling chain reaction
Starting chain reaction
Stopping chain reaction

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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
 The meter constant of an energy meter will be given in:

Revolutions/kWh
kWh/Revolutions
kW/Revolutions
Revolutions/kW

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

Leading
Zero
Lagging
Unity

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SSC JE Electrical 2019 with solution SET-1
 Identify the INCORRECT statement with regards to synchronous motors

It is a self-starting machine
It is a constant speed motor
The field winding is placed on the rotor
The armature winding is placed on the stator

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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

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

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