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MCQs on Basic Electrical

April 30, 2017 by admin

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 1. If one of the resistors in a parallel circuit is removed, the total resistance
(a) decreases.
(b) increases.
(c) remains the same.
(d) doubles.

Answer

           B 

 2. When number of capacitors are connected in series, then the equivalent capacitance is
(a) increases.
(b) decreases.
(c) remain same.
(d) none of the above.

Answer

           B 

 3. When number of inductors are connected in series, then equivalent inductance is
(a) decreasing.
(b) increases.
(c) remain same.
(d) none of the above.

Answer

           B 

 4. An inductor is a device which store energy in the form of
(a) electric field.
(b) magnetic field.
(c) both electric and magnetic field.
(d) voltage and current.

Answer

           B 

 5. A capacitor is a device designed to store energy in the
(a) electric field.
(b) magnetic field.
(c) both electric and magnetic field.
(d) plates.

Answer

           A 

 6. The conductivity of superconductor is
(a) infinite.
(b) very large.
(c) very small.
(d) zero.

Answer

           A 

 7. The fuse wire is made of
(a) copper.
(b) nichrome.
(c) lead tin alloy.
(d) aluminium.

Answer

           C 

 8. The temperature co-efficient of resistance of semiconductor is
(a) negative.
(b) zero.
(c) positive.
(d) none of these.

Answer

           A 

 9. An electric filament bulb can be worked from
(a) D.C. supply only.
(b) A.C. supply only.
(c) Battery supply only.
(d) All of the above.

Answer

           D 

You may also read
• Why all the voltage levels are multiples of 11 kV?
• Why Motor rated in kW instead of kVA?

 10. The fuse wire is always rated in term of
(a) ampere-hours.
(b) ampere-volts.
(c) kWh.
(d) amperes.  

Answer

           D 

 11. The filament of an electric bulb is made of
(a) nichrom.
(b) aluminium.
(c) tungsten.
(d) nickel.

Answer

           C 

 12. Capacitors for P.f correction are rated in
(a)
KW.
(b)
KVA.
(c)
KV.
(d)
KVAR.

Answer

           D 

 13. A 4 ohm resistor having  3 A current will dissipate the power of
(a) 36 watts.
(b) 10 watts.
(c) 12 watts.
(d) 15 watts.

Answer

           C 

 14. The power factor of an inductive load is always
(a) positive.
(b) zero.
(c) negative.
(d) unity.

Answer

           C 

 15. No current flows between two charged bodies if they have same
(d) charge.
(b) capacity.
(c) potential.
(d) resitance.

Answer

           C 

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Also Read :

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Filed Under: Electrical MCQ Tagged With: Basic Electrical MCQ, Electrical Engineering MCQ, MCQ on Basic of Electrical Engineering

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