Electrical Engineering MCQs

3699 MCQs  — Computer Programming MCQs  (Page 16 of 370)

The thickness of laminations used in a transformer is usually____________?
A. 0.4 mm to 0.5 mm
B. 4 mm to 5 mm
C. 14 mm to 15 mm
D. 25 mm to 40 mm
The function of conservator in a transformer is___________________?
A. To project against’internal fault
B. To reduce copper as well as core losses
C. To cool the transformer oil
D. To take care of the expansion and contraction of transformer oil due to variation of temperature of sur-roundings
A Buchholz relay can be installed on______________?
A. Oil cooled transformers
B. Auto-transformers
C. Air-cooled transformers
D. Welding transformers