MCQs on Basic Electrical – 2
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.
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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.
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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.
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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.
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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.
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6. The conductivity of superconductor is
(a) infinite.
(b) very large.
(c) very small.
(d) zero.
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7. The fuse wire is made of
(a) copper.
(b) nichrome.
(c) lead tin alloy.
(d) aluminium.
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8. The temperature co-efficient of resistance of semiconductor is
(a) negative.
(b) zero.
(c) positive.
(d) none of these.
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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.
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10. The fuse wire is always rated in term of
(a) ampere-hours.
(b) ampere-volts.
(c) kWh.
(d) amperes.
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11. The filament of an electric bulb is made of
(a) nichrom.
(b) aluminium.
(c) tungsten.
(d) nickel.
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12. Capacitors for P.f correction are rated in
(a) KW.
(b) KVA.
(c) KV.
(d) KVAR.
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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.
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14. The power factor of an inductive load is always
(a) positive.
(b) zero.
(c) negative.
(d) unity.
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15. No current flows between two charged bodies if they have same
(d) charge.
(b) capacity.
(c) potential.
(d) resitance.
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