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1012016 Related Question Answers
1. For pipe earthing the minimum internal diameter of galvanized iron or steel pipe required is
12.5 m.m 16 m.m 18 m.m 38 m.m
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3. Which of the following equation is correct according to Ohm’s law?
R=I/V R=V/I I=R/V V=R/I
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4. Which meter is used to measure the power?
Power factor meter Ammeter Watt meter Multimeter
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5. If the area of cross section of a wire with a given length is doubled it’s resistance will:
Be doubled Be halved Remain same Be four times more
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6. Which of the following has negative temperature coefficient of resistance?
Copper Aluminium Gold Carbon
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7. A substance that has low retentivity cannot be used for the manufacturer of:
Electro magnet Permanent magnet Temporary magnet Paramagnets
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8. The initial function of a choke in a tube light circuit is to:
Limit the starting current Heat up the filament Induce high voltage Keep the voltage same
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10. In a 3 phase Delta connected circuit:
The line voltage is equal to phase voltage The line voltage is equal to Square root of 3 phase voltage The line voltage is equal to Phase voltage/Square root of 3 The line voltage is equal to zero
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11. The meter installed at your house to measure electrical energy is an example of:
Indicating type instrument Recording type instrument Indicating as well as recording type instrument Integrating type instrument
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13. The thermostat in an automatic electric iron will:
Reduce the current to control temperature Change the current flow through element Regulate the heat by switching ON-OFF Switch ON and OFF the indicating lamp
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14. What type of motor is used in a food mixer?
DC shunt motor Universal motor Capacitor start motor Permanent capacitor
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15. The potential difference that causes the break down of insulation is called:
Dielectric strength Insulation resistance Break down voltage Ampacity
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18. Which one of the following fire extinguisher is suitable for electrical fire?
Halon Water Foam Liquefied chemical
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20. Rawl plug tool and bit is used for :
Making holes in wood Making piolet holes in wood Making holes in metal sheets Making holes in bricks and concrete wall
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21. In an atom the number of proton is :
Equal to the number of electrons Equal to the neutronEqual to the neutron Equal to the nucleus Equal to zeroEqual to zero
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23. In a parallel circuit the total resistance is :
The sum of individual resistances Equal to highest resistance value More than the smallest resistance Less than the smallest resistance of the combination
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24. Heat developed in a conductor is proportional to the:
Square of the power Square of thetime Square of the current Square of theresistance
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