DGVCL Exam Paper (12-06-2016)
A fuse wire should have :

Low specific resistance and high melting point
High specific resistance and high melting point
Low specific resistance and low melting point
High specific resistance and low melting point

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DGVCL Exam Paper (12-06-2016)
A Step Up transformer :

Step up the level of Frequency
(a) and (b) only
Steps down the level of current
Steps up the level of Voltage

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DGVCL Exam Paper (12-06-2016)
What would happen if a power transformer designed for operation on 50 Hz (frequency) were connected to a 500 Hz (frequency) source of the same voltage:

Eddy Current and Hysteresis losses will be excessive
Transformer may start to smoke and burn
Current will be too much high
No effect

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