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.