Which of the following is not a fitting on a transformer? Mark as favorite Copy Link Commutator Breather Conservator Buchholz's relay Check Answer
Silicon steel used in laminations mainly reduces? Mark as favorite Copy Link hysteresis loss eddy current losses copper losses all of the above Check Answer
Burden of a current transformer is usually expressed in? Mark as favorite Copy Link amperes volts volt amperes kilowatt Check Answer
Negative voltage regulation is indicative that the load is? Mark as favorite Copy Link capacitive only inductive only inductive or resistive none of the above Check Answer
The transformation ratio of a transformer, for a given application? Mark as favorite Copy Link depends on secondary load is constant but not fixed is fixed but not constant none of the above Check Answer
While performing a short-circuit test on a transformer, usually low-voltage side is short-circuited because it has? Mark as favorite Copy Link low insulation easy access lower terminal voltage and higher current rating more number of turns Check Answer
The no load current in a transformer lags behind the applied voltage by an angle of about? Mark as favorite Copy Link 180º 120º 90º 75º Check Answer
The no-load current drawn by transformer is usually what per cent of the full-load current? Mark as favorite Copy Link 0.2 to 0.5 per cent 2 to 5 percent 12 to 15 per cent 20 to 30 per cent Check Answer
Which of the following does not change in a transformer? Mark as favorite Copy Link Current Voltage Frequency All of the above Check Answer
Primary winding of a transformer? Mark as favorite Copy Link is always a low voltage winding is always a high voltage winding could either be a low voltage or high voltage winding could either be a low voltage or high voltage winding Check Answer