a) Air gap of magnetic path b) Number of ampere-turns c) Adjustable back up stop d) None of these Ans: (b)
a) Low b) Medium c) High d) Independent of the change in air gap Ans: (c)
a) 0.2 to 0.3 b) 0.3 to 0.4 c) 0.4 to 0.6 d) 0.6 to 1.0 Ans: (d)
a) Impedance b) Current difference c) Voltage difference d) None of these Ans: (a)
a) Stability, reliability b) Speed sensitivity c) Selectivity, adequacy d) None of these Ans: (d)
a) Current during abnormal condition b) Voltage during abnormal condition c) Both (a) and (b) simultaneously d) Constantly the electrical quantities which differ during normal and abnormal conditions Ans: (d)
a) Low b) High c) Medium d) Very high Ans: (a)
a) Arcing time b) Opening time c) Closing time d) None of these Ans: (b)
a) Current difference b) Voltage difference c) Impedance difference d) Distance between two CT’s Ans: (c)
a) Line-to-line fault b) Line-to-line circuit c) Dead short circuit d) Both (a) and (b) occurring simultaneously Ans: (d)
MCQ of Transformer page-20:91. All day efficiency of a distribution transformer is ………. its commercial efficiency.
MCQ of Transformer page-19:81. Which of the following is not a fitting on the transformer ?
MCQ of Transformer page-18:71. The short circuit test on a transformer gives its