Which of the following is not a part of transformer installation? Mark as favorite Copy Link Conservator Breather Buchholz relay Exciter Check Answer
Buchholz relay is used on? Mark as favorite Copy Link welding transformers air-cooled transformers furnace transformers oil cooled transformers Check Answer
Buchholz relay is used in? Mark as favorite Copy Link motor protection line protection transformer protection none of the above Check Answer
When a delta connected primary of a 3-phase transformer is connected to 3- phase supply? Mark as favorite Copy Link magnetizing current in phase winding will carry third harmonics but line current will be free from it magnetizing current in phase winding will contain third harmonics and line current will also contain third harmonics magnetizing current in phase winding will not contain third harmonics but line current will contain third harmonics none of the above Check Answer
Harmonics in transformer result in? Mark as favorite Copy Link increased core losses increased I2R losses magnetic interference with communication circuits all of the above Check Answer
ln the transformer following winding has got more cross-sectional area? Mark as favorite Copy Link Low voltage winding High voltage winding Primary winding Secondary winding Check Answer
The magnetising current of a transformer is usually small because it has? Mark as favorite Copy Link small air gap large leakage flux laminated silicon steel core fewer rotating parts 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
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 for both outside and inside faults none of the above Check Answer
A Buchholz relay can be installed on? Mark as favorite Copy Link auto-transformers air-cooled transformers welding transformers oil cooled transformers Check Answer