Transformers
In a certain loaded transformer, the secondary voltage is one-fourth the primary voltage. The secondary current is

equal to the primary current
one-fourth the primary current
four times the primary current
one-fourth the primary current and equal to the primary current

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Transformers
In a power or distribution transformer about 10 per cent end turns are heavily insulated

to reflect the line surge and save the winding of a transformer from damage
to withstand the high voltage drop due to line surge produced by the shunting capacitance of the end turns
to absorb the line surge voltage and save the winding of transformer from damage
None of these

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Transformers
In case of 3-phase induction motors, plugging means

pulling the motor directly on line without a starter
starting the motor on load which is more than the rated load
interchanging two supply phases for quick stopping
locking of rotor due to harmonics

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