Q1. | The material used for the manufacture of grounding wires is |
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A. | cast iron [Wrong Answer] |
B. | aluminium [Wrong Answer] |
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C. | stainless steel [Wrong Answer] |
D. | galvanised steel [Correct Answer] |
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Q2. | In medium transmission lines the shunt capacitance is taken into account in |
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A. | T-method [Wrong Answer] |
B. | π-method [Wrong Answer] |
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C. | steinmetz method [Wrong Answer] |
D. | all of the above [Correct Answer] |
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Q3. | In overhead transmission lines the effect of capacitance can be neglected when the length of line is less than |
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A. | 80 km [Correct Answer] |
B. | 110 km [Wrong Answer] |
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C. | 150 km [Wrong Answer] |
D. | 210 km [Wrong Answer] |
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Q4. | Floating neutral, in 3-phase supply, is undesirable because it causes |
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A. | low voltage across the load [Wrong Answer] |
B. | high voltage across the load [Wrong Answer] |
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C. | unequal line voltages across the load [Correct Answer] |
D. | none of the above [Wrong Answer] |
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Q5. | The colour of the neutral of three-core flexible cable is |
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A. | blue [Correct Answer] |
B. | brown [Wrong Answer] |
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C. | red [Wrong Answer] |
D. | black [Wrong Answer] |
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Q6. | By which of the following systems electric power may be transmitted ? |
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A. | Overhead system [Wrong Answer] |
B. | Underground system [Wrong Answer] |
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C. | Both (a) and (b) [Correct Answer] |
D. | None of the above [Wrong Answer] |
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Q7. | The corona is considerably affected by which of the following ? |
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A. | Size of the conductor [Wrong Answer] |
B. | Shape of the conductor [Wrong Answer] |
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C. | Surface condition of the conductor [Wrong Answer] |
D. | All of the above [Correct Answer] |
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Q8. | The operating voltage of extra high tension cables is upto |
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A. | 66 kV [Wrong Answer] |
B. | 11 kV [Wrong Answer] |
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C. | 33 kV [Wrong Answer] |
D. | 66 kV [Correct Answer] |
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E. | 132 kV [Wrong Answer] |
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Q9. | The voltage of the single phase supply to residential consumers is |
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A. | 110 V [Wrong Answer] |
B. | 210 V [Wrong Answer] |
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C. | 230 V [Correct Answer] |
D. | 400 V [Wrong Answer] |
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Q10. | The power factor of industrial loads is generally |
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A. | unity [Wrong Answer] |
B. | lagging [Correct Answer] |
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C. | leading [Wrong Answer] |
D. | zero [Wrong Answer] |
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