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Electrical Engineering - Fundamentals Circuits And Circuit Theory MCQs
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Electrical Engineering - Fundamentals Circuits And Circuit Theory MCQs
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25 Questions

1. Which of the following waves has the highest value of peak factor ?
2. Form factor for a sine wave is
3. A sine wave has a frequency of 50 Hz. Its angular frequency is _______ radian/second.
4. The safest value of current the human body can carry for more than 3 second is
5. The power is measured in terms of decibles in case of
6. The power consumed in a circuit element will be least when the phase difference between the current and voltage is
7. Pure inductive circuit
8. If two sinusoids of the same frequency but of different amplitudes and phase angles are subtracted, the resultant is
9. A pure inductance connected across 250 V, 50 Hz supply consumes 100W.This consumption can be attributed to
10. At ______ frequencies the parallel R-L circuit behaves as purely resistive.
11. Power factor of electric bulb is
12. In a parallel R-C circuit, the current always______the applied voltage
13. In a pure capacitive circuit if the supply frequency is reduced to1/2, the current will
14. The reactance offered by a capacitor to alternating current of frequency 50 Hz is 20 Q. If frequency is increased to 100 Hz, reactance becomes_____ohms.
15. Wire-wound resistors are unsuitable for use at high frequencies because they
16. At very low frequencies a series R-C circuit behaves as almost purely
17. In a highly capacitive circuit the
18. In a purely inductive circuit
19. In an A.C. circuit power is dissipated in
20. Aphasoris
21. If two sine waves of the same frequency have a phase difference of JT radians, then
22. In an AC. circuit, a low value of kVAR compared with kW indicates
23. The r.m.s. value of half wave rectified sine wave is 200 V. The r.m.s. value of full wave rectified AC. will be
24. The double energy transient occur in the
25. Pure inductive circuit takes power from the A.C. line when

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