Which winding in a transformer has more number of turns? Mark as favorite Copy Link Low voltage winding High voltage winding Primary winding Secondary winding Check Answer
If a transformer is continuously operated the maximum temperature rise will occur in? Mark as favorite Copy Link core windings tank any of the above Check Answer
Which of the following is not the standard voltage for power supply in India? Mark as favorite Copy Link 11 kV 33 kV 66 kV 122kV Check Answer
If a transformer is switched on to a voltage more than the rated voltage? Mark as favorite Copy Link its power factor will deteriorate its power factor will increase its power factor will remain unaffected its power factor will be zero Check Answer
Iron loss of a transformer can be measured by? Mark as favorite Copy Link low power factor wattmeter unity power factor wattmeter frequency meter any type of wattmeter Check Answer
As per the name plate of a transformer the secondary normal voltage is 220 V. Which of the following statements about it is correct? Mark as favorite Copy Link 220 V is the no-load voltage The no-load voltage is more than 220V The secondary voltage increases with increasing load At a load which draws the rated current the voltage becomes less than 220 V Check Answer
The changes in volume of transformer cooling oil due to variation of atmospheric temperature during day and night is taken care of by which part of transformer? Mark as favorite Copy Link Conservator Breather Bushings Buchholz relay Check Answer
Oil impregnated paper condenser bushing is generally used on transformers operating at? Mark as favorite Copy Link 132 kV 66 kV 33 kV 11 kV Check Answer
Which of the following is the main advantage of an auto-transformer over a two winding transformer? Mark as favorite Copy Link Hysteresis losses are reduced Saving in winding material Copper losses are negligible Eddy losses are totally eliminated Check Answer
Buchholz’s relay gives warning and protection against? Mark as favorite Copy Link electrical fault inside the transformer itself electrical fault outside the transformer in outgoing feeder either of the above none of the above Check Answer