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1.
Short circuit test on transformers is conducted to determine
2.
In a certain transformer, the input power to the primary is 120 W. If 8.5 W are lost to the winding resistance, what is the output power to the load, neglecting any other issues?
3.
Which of the following acts as a protection against high voltage surges due to lightning and switching?
4.
The power factor of an induction motor under no-load conditions will be closer to
5.
Auto-transformer makes effective saving on copper and copper losses, when its transformation ratio is
6.
The path of a magnetic flux in a transformer should have
7.
The path of the magnetic flux in transformer should have
8.
The permissible flux density in case of cold rolled grain oriented steel is around
9.
No-load current of a transformer has
10.
In a step-down transformer, there is a change of 15 A in the load current. This results in change of supply current of