ONLINE MCQ EE-ELECTRICAL INSTALLATION & WIRING 2

Q11. The advantage of oil filled cables is
 A.  more perfect impregnation
 [Wrong Answer]
 B.  smaller overall size
 [Wrong Answer]
 C.  no ionisation, oxidation and formation
of voids
 [Wrong Answer]
 D.  all of the above
 [Correct Answer]
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Q12. Empire tape is
 A.  varnished cambric
 [Correct Answer]
 B.  vulcanised rubber
 [Wrong Answer]
 C.  impregnated paper
 [Wrong Answer]
 D.  none of the above
 [Wrong Answer]
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Q13. The minimum dielectric stress in a
cable is at
 A.  armour
 [Wrong Answer]
 B.  bedding
 [Wrong Answer]
 C.  conductor surface
 [Wrong Answer]
 D.  lead sheath
 [Correct Answer]
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Q14. In capacitance grading of cables we use
a ____ dielectric.
 A.  composite
 [Correct Answer]
 B.  porous
 [Wrong Answer]
 C.  homogeneous
 [Wrong Answer]
 D.  hygroscopic
 [Wrong Answer]
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Q15. If a cable of homogeneous insulation
has a maximum stress of 10 kV/mm,
then the dielectric strength of insulation
should be
 A.  5 kV/mm
 [Wrong Answer]
 B.  10 kV/mm
 [Correct Answer]
 C.  15 kV/mm
 [Wrong Answer]
 D.  30 kV/mm
 [Wrong Answer]
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Q16. Underground cables are laid at sufficient
depth
 A.  to minimise temperature stresses
 [Wrong Answer]
 B.  to avoid being unearthed easily due
to removal of soil
 [Wrong Answer]
 C.  to minimise the effect of shocks and
vibrations due to passing vehicles,
etc.
 [Correct Answer]
 D.  for all of the above reasons
 [Wrong Answer]
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Q18. The thickness of the layer of insulation
on the conductor, in cables, depends
upon
 A.  reactive power
 [Wrong Answer]
 B.  power factor
 [Wrong Answer]
 C.  voltage
 [Correct Answer]
 D.  current carrying capacity
 [Wrong Answer]
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Q19. In single core cables armouring is not
done to
 A.  avoid excessive sheath losses
 [Correct Answer]
 B.  make it flexible
 [Wrong Answer]
 C.  either of the above
 [Wrong Answer]
 D.  none of the above
 [Wrong Answer]
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Q20. Pressure cables are generally not used
beyond
 A.  11 kV
 [Wrong Answer]
 B.  33 kV
 [Wrong Answer]
 C.  66 kV
 [Correct Answer]
 D.  132 kV
 [Wrong Answer]
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ONLINE MCQ EE-ELECTRICAL INSTALLATION & WIRING 1

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