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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. Conductance : mho ::
2. With rise in temperature the resistance of pure metals
3. The number of electrons in the outer most orbit of carbon atom is
4. A laminated iron core has reduced eddy-current losses because
5. The best indication about the state of charge on a lead-acid battery is given by
6. In order to remove static electricity from machinery
7. Weston standard cell at 20°C has voltage of volts.
8. The electric field intensity at a point situated 4 metres from a point charge is 200 N/C. If the distance is reduced to 2 metres, the field intensity will be
9. 'The surface integral of the normal component of the electric displacement D over any closed surface equals the charge enclosed by the surface'. The above statement is associated with
10. In a D.C. machine, short-circuited field coil will result in
11. A substance whose molecules consist of dissimilar atoms is called
12. A field of force can exist only between
13. D.C. generators are connected to the busbars or disconnected from them only under the floating condition
14. In D.C. generators the pole shoes are fastened to the pole core by
15. Persons preparing electrolyte should wear
16. The internal resistance of an alkali cell is nearly times that of the lead- acid cell.
17. Iron losses in a D.C. machine are independent of variations in
18. The lead-acid cell should never be discharged beyond
19. capacitors are mainly used for radio frequency tuning.
20. Petroleum jelly is applied to the electrical connections to the lead-acid battery
21. A coil induces 350 mV when the current changes at the rate of 1 A/s. The value of inductance is
22. Which of the following statements is incorrect ?
23. Batteries are charged by
24. Mica capacitors are characterised by all of thte following except
25. Which of the following capacitors can be used for temperature compensation ?