MCQ of Transformer page-20:
91. All day efficiency of a distribution transformer is ………. its commercial efficiency.
A) Lower than
B) Equal to
C) Higher than
D) Any of these.

MCQ of Transformer page-19:
81. Which of the following is not a fitting on the transformer ?
A) Commutator
B) Buchholz relay
C) Conservator
D) Breather.

MCQ of Transformer page-18:
71. The short circuit test on a transformer gives its
A) Magnetizing current and core loss
B) Magnetizing impedance
C) Equivalent resistance and reactance
D) Equivalent resistance and core loss.

MCQ of Transformer page-17:
61. As a general rule, the kVA rating ratio of transformers operating in parallel should be within
A) 5 : 1
B) 4 : 1
C) 3 : 1
D) 2 : 1.