Electric Cables Mcqs
This set of Electrical engineering Multiple Choice Questions & Answers (MCQs) focuses on study of “Electric Cables”. These questions are chosen from a collection of most authoritative and best reference books on Electrical engineering. Our aim is to prepare an individual for competitive exams like NTS, GAT, ECAT, University and College entrance exams, Jobs and interviews. One should practice our MCQS to assimilate Electric Cables Mcqs comprehensively.
2. The thickness of the layer of insulation on the conductor, in cables, depends upon___________?
Reactive power
Power factor
Voltage
Current carrying capacity
3. The insulating material for a cable should have__________?
Low cost
High dielectric strength
High mechanical strength
All of the above
Answer & Solution
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4. Which of the following protects a cable against mechanical injury___________?
Bedding
Sheath
Armouring
None of the above
Answer & Solution
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5. Empire tape is__________?
Varnished cambric
Vulcanised rubber
Impregnated paper
None of the above
Answer & Solution
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6. In a cable immediately above metallic sheath ______ is provided
Earthing connection
Bedding
Armouring
None of the above
7. The bedding on a cable consists of____________?
Hessian cloth
Jute
Any of the above
None of the above
Answer & Solution
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8. cables are used for 132 kV lines____________?
High tension
Super tension
Extra high tension
Extra super voltage
Answer & Solution
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9. The current carrying capacity of cables in D.C. is more than that in A.C. mainly due to__________?
Absence of harmonics
Non-existence of any stability limit
Smaller dielectric loss
Absence of ripples
Answer & Solution
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10. The insulating material for cables should____________?
Be acid proof
Be non-inflammable
Be non-hygroscopic
Have all above properties
Answer & Solution
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11. In single core cables armouring is not done to________?
Avoid excessive sheath losses
Make it flexible
Either of the above
None of the above
Answer & Solution
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12. In case of three core flexible cable the colour of the neutral is_________?
Blue
Black
Brown
None of the above
13. In a cable, the maximum stress under operating conditions is at___________?
Insulation layer
Sheath
Armour
Conductor surface
Answer & Solution
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14. Dielectric strength of rubber is around____________?
5 kV/mm
15 kV/mm
30 kV/mm
200 kV/mm
Answer & Solution
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15. High tension cables are generally used up to_____________?
11kV
33kV
66 kV
132 kV