SSC JE Electrical 2018 with solution SET-1
 A 40KVA transformer has a core loss of 450 W and total loss of 800 W. Find the copper loss for Maximum efficiency

800 W
300 W
450 W
350 W

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SSC JE Electrical 2018 with solution SET-1
A DC generator used for ARC welding should Have

Rising characteristics
Dropping Characteristics
Straight characteristics
None of these

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SSC JE Electrical 2018 with solution SET-1
 A hysteresis Motor

Is a constant speed motor
Can not be run in reverse speed
Need DC excitation
Is not a self-starting motor

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SSC JE Electrical 2018 with solution SET-1
A circuit having the power factor of 0.8 consumes 40 W. What will be the value of reactive power (in VAR) of the circuit?

30
40
20
10

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SSC JE Electrical 2018 with solution SET-1
 Which one of the following is a passive element to an electric circuit?

Current source
Resistors
Voltage source
Battery

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