if the rated voltage from the power lines is applied to the primary of a single-phase transformer...

if the rated voltage from the power lines is applied to the primary of a single-phase transformer which is operated on no-load, then
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Answer :

if the rated voltage from the power lines is applied to the primary of a single-phase transformer which is operated on no-load, then input voltage is sinusoidal and input current is non sinusoidal.

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A single phase transformer rated at 3000 kVA, 69 kV 4.16 kV, 60 Hz has a total internal impedance Zp of 127...

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A balanced three-phase, 50 Hz voltage is applied to a 3 phase, 4 pole, induction motor. When the motor is delivering rated output, the slip is found to be 0.05. The speed of the rotor m.m.f. relative to the rotor structure is (A) 1500 r.p.m. (B) 1425 r.p.m. (C) 25 r.p.m. (D) 75 r.p.m.

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Last Answer : (C) more than 4.5%.

In a three phase transformer, if the primary side is connected in star and secondary side is connected in delta, what is the angle difference between phase voltage in the two cases. (A) delta side lags by -30°. (B) star side lags by -30°. (C) delta side leads by 30°. (D) star side leads by -30°.

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A balanced three-phase, 50 Hz voltage is applied to a 3 phase, 4 pole, induction motor. When the motor is ...

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