Basic Electric- Electrical Engineering (MCQ) questions and answers
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1. The circuit component that opposes the change in circuit voltage is
2. Two heaters rated at 1000W, 250V each are connected in series across a 250V, 50Hz AC mains. The total power drawn from the supply would be
3. Specific resistance of a conductor depends upon
4. A wire has a resistance 10ohm. It is stretched by one-tenth of the original length. Then its resistance will be
5.The ratio of resistance of a 100W, 220V lamp to that of a 100W,110V lamp will be equal to
6.If four micro 10 Farad capacitors are connected in parallel the net capacitance is
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7. Three resistances of 5 ohm are connected in star. Values of equivalent delta resistances are
8. The resistance of insulation, in general___ with temprature rise
9. Which of the following materials possesses least resistivity
10. Ampere-second is a unit of
11. Three inductors each of 60mH are connected in delta. The value of inductance of each arm of the equivalent star connection is
12. We have three resistances each of value 1Ω, 2Ω, 3Ω. If all the three resistances are to be connected in a circuit, how many different values of equivalent resistance are possible?
13. An electric heater draws 1000W from a 250V source. The power drawn from a 200V source is
14. Four resistance 2Ω, 4Ω, 5Ω, 20Ω, are connected in parallel. Their combined
15. The material to be used to manufacture a standard resistor should be of
16. Which of the following is non linear circuit parameter?
17. A terminal where three or more branches meet is known as
18. Three resistors, each of 'R'Ω are connected in star. What is the value of equivalent delta connected resistors?
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