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JEE Main PAPER - 1

JEE Main · 2018

180 questions · One at a time

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117
MCQ4 marks

In an a.c. circuit, the instantaneous e.m.f. and current are given by e=100sin30te = 100 \sin 30 t  , i=20sin(30tπ/4)i = 20 \sin (30t - \pi/4)  . In one cycle of a.c., the average power consumed by the circuit and the wattless current are, respectively:

  • A.502,0\frac{50}{\sqrt{2}}, 0
  • B.50,050, 0
  • C.50,1050, 10
  • D.10002,10\frac{1000}{\sqrt{2}}, 10Correct
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