A transformer core is laminated to__________?
(A) reduce hysteresis loss
(B) reduce eddy current losses
(C) reduce copper losses
(D) reduce all above losses
In a transformer the energy is conveyed from primary to secondary_________?
(A) through cooling coil
(B) through air
(C) by the flux
(D) none of the above
Efficiency of a power transformer is of the order of________________?
(A) 100 per cent
(B) 98 per cent
(C) 50 per cent
(D) 25 per cent
Which winding in a transformer has more number of turns ?
(A) Low voltage winding
(B) High voltage winding
(C) Primary winding
(D) Secondary winding
Primary winding of a transformer________________?
(A) is always a low voltage winding
(B) is always a high voltage winding
(C) could either be a low voltage or high voltage winding
(D) none of the above
In the transformer following winding has got more cross-sectional area______________?
(A) Low voltage winding
(B) High voltage winding
(C) Primary winding
(D) Secondary winding
While conducting short-circuit test on a transformer the following side is short circuited?
(A) High voltage side
(B) Low voltage side
(C) Primary side
(D) Secondary side
Which of the following is not a part of transformer installation ?
(A) Conservator
(B) Breather
(C) Buchholz relay
(D) Exciter
The purpose of providing an iron core in a transformer is to_____________?
(A) provide support to windings
(B) reduce hysteresis loss
(C) decrease the reluctance of the magnetic path
(D) reduce eddy current losses