A Buchholz relay can be installed on? Mark as favorite Copy Link auto-transformers air-cooled transformers welding transformers oil cooled transformers Check Answer
Natural oil cooling is used for transformers upto a rating of? Mark as favorite Copy Link 3000 kVA 1000 kVA 500 kVA 250 kVA Check Answer
The chemical used in breather is? Mark as favorite Copy Link asbestos fibre silica sand sodium chloride silica gel Check Answer
The use of higher flux density in the transformer design? Mark as favorite Copy Link reduces weight per kVA reduces iron losses reduces copper losses increases part load efficiency Check Answer
What will happen if the transformers working in parallel are not connected with regard to polarity? Mark as favorite Copy Link The power factor of the two transformers will be different from the power factor of common load Incorrect polarity will result in dead short circuit The transformers will not share load in proportion to their kVA ratings none of the above Check Answer
Spacers are provided between adjacent coils? Mark as favorite Copy Link to provide free passage to the cooling oil to insulate the coils from each other both (a) and (b) none of the above Check Answer
Natural oil cooling is used for transformers upto a rating of? Mark as favorite Copy Link 3000 kVA 1000 kVA 500 kVA 250 kVA Check Answer
ln a transformer routine efficiency depends upon? Mark as favorite Copy Link supply frequency load current power factor of load both (b) and (c) Check Answer
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
Which of the following is not a part of transformer installation? Mark as favorite Copy Link Conservator Breather Buchholz relay Exciter Check Answer