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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 electric field at a point situated at a distance d from straight charged conductor is
2. Open circuited armature coil of a D.C. machine is
3. Which of the following D.C. generators will be in a position to build up without any residual magnetism in the poles ?
4. For which of the following parameter variation, the capacitance of the capacitor remains unaffected ?
5. During charging the specific gravity of the electrolyte of a lead-acid battery
6. A separately excited generator as compared to a self-excited generator
7. In a four-pole D.C. machine
8. Brushes of D.C. machines are made of
9. Two coils have inductances of 8 mH and 18 mH and a co-efficient of coupling of 0.5. If the two coils are connected in series aiding, the total inductance will be
10. In a D.C. generator the critical resistance refers to the resistance of
11. A substance whose molecules consist of dissimilar atoms is called
12. The total deficiency or excess of electrons in a body is known as
13. Capacity of dry cells is
14. capacitors are used in transistor circuits.
15. Varistors are
16. Which of the following material has least value of dielectric constant ?
17. In order to remove static electricity from machinery
18. If a 6 mF capacitor is charged to 200 V, the charge in coulombs will be
19. Bulbs in street lighting are all connected in
20. In a lead-acid cell dilute sulphuric acid (electrolyte) approximately comprises the following
21. The self-inductance of the coil may be defined as equal to the e.m.f. induced in volts when the current in the circuit changes at the rate of unit weber turns.
22. Point out the wrong statement. Magnetic leakage is undesirable in electric machines because it
23. Voltage dependent resistors are usually made from
24. Compensating windings are used in D.C. generators
25. Ampere hour capacity of an industrial battery is based on hours discharge rate.

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