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

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

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SSC JE Electrical 2019 with solution SET-1
 What would the total loss of the 2kVA transformer corresponding to maximum efficiency be, provided the transformer has the iron of 150 W and full-load copper loss of 250W?

100 W
500 W
300 W
400 W

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SSC JE Electrical 2019 with solution SET-1
 Let T be the net torque developed by the rotor runs at ω rad/s. What is the mechanical power developed?

Pmech = (2πωT)/60
Pmech = ωT
Pmech = (2πωT)
Pmech = (ωT)/60

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