1) What percentage is the stock incidental charge?
a. 10 %
b. 5 %
c. 12 %
d. 2 %
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2) Which state in India does not follow IE (Indian Electricity rules)?
a. Sikkim
b. Jammu Kashmir
c. Nagaland
d. Mizoram
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3) Which rule deals with the supply to X- rays and high frequency installations?
a. Rule 30
b. Rule 39
c. Rule 73
d. Rule 51
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4) Which section in the IE Act deals with the ‘theft of energy’?
a. Section 39
b. Section 40
c. Section 43
d. Section 44
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5) What does section 44 refer to?
a. Penalty for interference with meters
b. Penalty for illegal transmission or use of energy
c. Penalty for maliciously wasting energy
d. Theft of energy
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6) Which insulating material is used for low voltage cables?
a. Impregnated paper
b. Rubber
c. Silk and cotton
d. Vulcanised Indian rubber
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7) What is the maximum voltage that XLPE cables can withstand?
a. 65 ° C
b. 80 ° C
c. 110 ° C
d. 130 ° C
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8) What are the types of conduits available?
a. PVC conduit
b. Flexible conduit
c. Heavy gauge steel screwed conduit
d. All of these
e. None of these
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9) What is / are the various types of fuse?
a. Kit Kat type
b. Cartridge type
c. Round type
d. Both (a) & (c)
e. All of these
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10) Which among these fuse is very fast in operation?
a. Semiconductor fuses
b. High rupturing capacity
c. Cartridge type
d. Kit Kat type
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11) For what range is the underground service lines used?
a. Distance more than 25 m
b. Distance more than 100 m
c. Distance less than 1 km
d. Distance more than 1 km
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12) Which among these is a demerit of underground service mains?
a. Ugly appearance
b. Frequent fault occurrence
c. Costly
d. All of these
e. None of these
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13) Which IE rule is applicable to service mains?
a. Rule 30
b. Rule 33
c. Rule 77
d. Both (a) & (b)
e. All of these
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14) What is the specification of GI earth plate?
a. 60 cm * 60 cm * 3 mm
b. 60 cm * 60 cm * 6 mm
c. 60 cm * 60 cm * 4 mm
d. 60 cm * 60 cm * 5 mm
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15) What is the amount of charcoal and salt needed for GI Pipe earthing?
a. Charcoal 5 kg, salt 8 kg
b. Charcoal 10 kg, salt 8 kg
c. Charcoal 10 kg, salt 10 kg
d. Charcoal 5 kg, salt 5 kg
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16) What should be the insulation resistance in case of PVC wires?
a. 12.5 MΩ / number of outlet
b. 82.5 MΩ / number of outlet
c. 2.5 MΩ / number of outlet
d. 10.5 MΩ / number of outlet
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17) What is the reason for excess reading of the energy meter?
a. Defective wiring
b. Meter defects
c. Over voltage
d. Both (A) & (B)
e. All of these
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18) If the measured insulation value is more than unity what value should be taken as the maximum working value?
a. 0.75 MΩ
b. One MΩ
c. 0.5 MΩ
d. One ohm
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19) Which among these tests are to be conducted on wiring installations?
a. Testing of polarity of non linked single pole switches
b. Testing of earth continuity path
c. Testing of earth resistance
d. All of these
e. None of these
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20) What will be the maximum leakage current, if a domestic installation uses 20 points of 40 watt lamps and 5 fans of 100 watts each?
Use voltage = 240 V
a. 0.002 A
b. 0.0011 A
c. 0.003 A
d. 0.005 A
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21) Which lamp is used in the outdoor illumination of buildings and airport runway?
a. Halogen lamp
b. Gaseous discharge lamp
c. Sodium vapour lamp
d. All of these
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22) How is the ballast resistance connected with the choke?
a. Parallel
b. Series
c. Can be connected in either way
d. Both (a) & (b)
e. None of these
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23) What is the normal life of a fluorescent lamp?
a. 2000 hours
b. 3500 hours
c. 7500 hours
d. 10000 hours
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24) Which method is used for the lighting calculations?
a. Watts per square meter method
b. Lumen or light flux method
c. Point to point method
d. All of these
e. None of these
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25) What will be the utilisation factor for an indirect lighting scheme?
a. 0.25 – 0.5
b. 0.5 – 0.75
c. 0.1 – 0.25
d. 0.75 – 0.99
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26) What is the size of the cable made up of copper conductors used for a 10 hp 500 V DC motor?
a. 7 / 0.915 mm
b. 1 / 2.8 mm
c. 3 / 0.915 mm
d. Both (b) & (c)
e. All of these
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27) Which starter is used for slip ring induction motors of high ratings?
a. DOL starter
b. Rotor resistance starter
c. Autotransformer starter
d. All of these
e. None of these
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28) What is the input current of a 2 hp single phase motor, 240 V at 70 % efficiency and 0.8 power factor?
a. 6.95 A
b. 10.95 A
c. 13.52 A
d. 17.68 A
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29) How many earth connections are required for the motor frame as per the IE rule 61?
a. One
b. Two separate and distinct
c. Three separate and distinct
d. All of these
e. None of these
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30) What are the minimum cross sections of conductors that are used for power wiring?
a. 2.5 mm2 and 1.25 mm2 for aluminium and copper conductors respectively.
b. 1.25 mm2 and 2.5 mm2 for aluminium and copper conductors respectively.
c. 1.5 mm2 and 1.25 mm2 for aluminium and copper conductors respectively.
d. 2.5 mm2 and 2.25 mm2 for aluminium and copper conductors respectively.
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Answer
Explanation
Related Ques
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ANSWER: 2.5 mm2 and 1.25 mm2 for aluminium and copper conductors respectively.
Explanation:
No explanation is available for this question!
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31) What should be the spacing between the two conductors if the working voltage is 11 kV?
a. 76 mm
b. 101 mm
c. 190 mm
d. 250 mm
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32) What is the angle between the pole and stay?
a. 30 °
b. 45 °
c. 60 °
d. 10 °
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33) What is the empirical formula employed for the determination of spacing of conductors in case of aluminium conductors?
a. √S + V / 100
b. √S + 120 / V
c. √S + V / 150
d. √S + V / 1 kV
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34) What should be the minimum insulation resistance of a 11 kV line when tested with a 1000 v Megger?
a. 10 kV
b. 50 kV
c. 33 kV
d. 120 kV
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35) Which test(s) is / are conducted after completion of erection of 11 kV line but before energisation of lines?
a. Conductor continuity tests
b. Earth resistance tests
c. Insulation resistance tests
d. Both (a) & (c)
e. All of these
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36) What should be the minimum clearance for laying power cables near communication lines?
a. 0.2 m horizontally and vertically
b. 0.6 m horizontally and vertically
c. 1 m horizontally and vertically
d. 1.5 m horizontally and vertically
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37) What is the multiplication factor used for the determination of maximum current carrying capacity of an 11 kV line?
a. 0.88
b. 0.95
c. 0.9
d. 0.8
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38) What should be the height of the ‘Roof Pole’?
a. Less than 5m
b. Less than 3m
c. More than 3m
d. More than 10m
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39) What is the formula to calculate the number of poles required in LT line distribution?
a. Length / Span + 1
b. Length / Span + 10
c. Span / Length + 1
d. Span / Length + 10
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40) Which type of cable is used for underground service connections?
a. Low tension 3 ¼ core cable
b. Low tension 3 ½ core cable
c. Low tension 2 ¼ core cable
d. Low tension 2 ½ core cable
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