GATE EE 2001 | Transformers Question 63 | Electrical Machines

GATE EE 2001

MCQ (Single Correct Answer)

-0.3

A single-phase transformer is to be switched to the supply to have minimum inrush current. The switch should be closed at

maximum supply voltage

zero supply voltage

$$\frac1{\sqrt2}$$ maximum supply voltage

$$\frac12$$ maximum supply voltage

GATE EE 2001

MCQ (Single Correct Answer)

-0.3

The core flux of a practical transformer with a resistive load

is strictly constant with load changes

increases linearly with load

increases as the square root of the load

decreases with increased load

GATE EE 2000

MCQ (Single Correct Answer)

-0.3

In a constant voltage transformer (CVT), the output voltage remains constant due to

capacitor

input inductor

saturation

tapped windings

GATE EE 2000

MCQ (Single Correct Answer)

-0.3

If an ac voltage wave is corrupted with an arbitrary number of harmonics, then the overall voltage waveform differs from its fundamental frequency component in terms of

only the peak values

only the rms values

only the average values

all the three measures (peak, rms and average values)

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