a) Short duty b) Intermittent duty c) Repeated duty d) All of these Ans: (c)
a) Breaking capacity b) Making capacity c) Short time capacity d) All of these Ans: (d)
a) Zero voltage b) Zero current c) High current d) High voltage Ans: (b)
a) Peak value of a.c. component b) Average value of a.c. component c) R.m.s. value of a.c. component d) All of these Ans: (c)
a) Lightning impulse waveform b) 50 Hz a.c. c) Peak value of 50 Hz a.c. d) All of these Ans: (d)
a) Reaches its maximum value b) Attains its r.m.s. value c) Is chopped d) Attains its average value Ans: (c)
a) High b) Low c) Medium d) None of these Ans: (a)
a) Is easily inflammable b) May from an explosive mixture with air c) Requires maintenance d) All of these Ans: (d)
a) Fault magnitude and time b) Increased arc and time of quenching c) R R R V d) None of these Ans: (a)
a) Corona effect b) Skin effect c) Mechanical stresses d) Poor regulation Ans: (b)
a) 400 V b) 3.3 kV c) 11 kV d) 33 kV Ans: (c)
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