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Electrical Engineering Most Important MCQs
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Electrical Engineering Most Important MCQs
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25 Questions

1. The capacitance between two plates increases with
2. In case of D.C. machines, mechanical losses are primary function of
3. A coil induces 350 mV when the current changes at the rate of 1 A/s. The value of inductance is
4. Paper capacitors usually have a tolerance of
5. Three capacitors each of the capacity C are given. The resultant capacity 2/3 C can be obtained by using them
6. Cell short circuit results in
7. The series field of a short-shunt D.C. generator is excited by
8. Kirchoff's laws are valid for
9. The value of dielectric constant for vacuum is taken as
10. The lead-acid cell should never be discharged beyond
11. The resistance of wire varies inversely as
12. Which of the following could be lamina-proximately the thickness of lamina-tions of a D.C. machine?
13. A separately excited generator as compared to a self-excited generator
14. The ampere-hour efficiency of a leadacid cell is normally between
15. A ferrite core has less eddy current loss than an iron core because
16. For a purely inductive circuit which of the following is true ?
17. In system the charging current is intermittently controlled at either a maximum or minimum value
18. In a commutator
19. To prevent the generation of static charges on rubber or flat leather
20. Which of the following primary cells has the lowest voltage ?
21. Two generators A and B have 6-poles each. Generator A has wave wound armature while generator B has lap wound armature. The ratio of the induced e.m.f. is generator A and B will be
22. Which capacitor will be physically smaller for the same ratings ?
23. The number of electrons in the outer most orbit of carbon atom is
24. Which of the following statement is correct ?
25. You have to replace 1500 ohm resistor in radio. You have no 1500 ohm resistor but have several 1000 ohm ones which you would connect

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