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Circuits And Circuit Theory QUESTIONS AND ANSWERS

Electrical Engineering : Circuits And Circuit Theory QUESTIONS AND ANSWERS :: part3 : 16 to 20

Following Electrical Engineering Multiple choice objective type questions and answers will help you in BSNL JTO, GATE 2024 and IES 2024 examinations :

16.If resistance is 20 Q. and inductance is 27 in a R-L series circuit, then time constant of this circuit will be

0.001 s

0.1 s

10 s

100 s

17.Pure inductive circuit takes power from the A.C. line when

applied voltage decreases but cur�rent increases

applied voltage increases but cur�rent decreases

both applied voltage and current increase

both applied voltage and current decrease

18.If a sinusoidal wave has frequency of 50 Hz with 30 A r.m.s. current which of the following equation represents this wave ?

42.42 sin 3141

60 sin 25 t

30 sin 50 t

84.84 sin 25 t

19.What will be the phase angle between two alternating waves of equal frequency, when one wave attains maximum value the other is at zero value ?

0�

45�

90�

180�

20.A pure inductance connected across 250 V, 50 Hz supply consumes 100 W. This consumption can be attributed to

the big size of the inductor

the reactance of the inductor

the current flowing in the inductor

the statement given is false

More Circuits And Circuit Theory QUESTIONS AND ANSWERS available in next pages