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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. Which capacitor will be physically smaller for the same ratings ?
2. The number of electrons in the outer most orbit of carbon atom is
3. When two D.C. series generators are running in parallel, an equilizer bar is used
4. Which of the following capacitors has relatively shorter shelf life ?
5. Voltmeter should be of very high resistance so that
6. Permeability in a magnetic circuit corresponds to in an electric circuit.
7. Internal short circuits are caused by
8. The average charging voltage for alkali cell is about
9. In a D.C. generator the critical resistance refers to the resistance of
10. Mutually inductance between two magnetically-coupled coils depends on
11. D.C. generator generally preferred for charging automobile batteries is
12. A 220 V D.C. generator is run at full speed without any excitation. The open circuit voltage will be
13. Insulating materials have the function of
14. Conductance is analogous to
15. Armature coil is short circuited by brushes when it lies
16. 'The total electric flux through any closed surface surrounding charges is equal to the amount oflcharge enclosed'.The above statement is associated with
17. A closed switch has a resistance of
18. Which of the following components of a D.C, generator plays vital role for providing direct current of a D.C. generator ?
19. Voltage applied across a ceramic dielectric produces an electrolytic field 100 times greater than air. What will be the value of dielectric constant ?
20. The watt-hour efficiency of a lead-acid cell varies between
21. A 500 turns solenoid develops an average induced voltage of 60 V. Over what time interval must a flux change of 0.06 Wb occur to produce such a voltage ?
22. Which of the following capacitors can be used for temperature compensation ?
23. The condition for the validity under Ohm's law is that
24. Electric displacement is a quantity.
25. Permanent magnets are normally made of