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Cables MCQs | Cables Short Questions and Answers

Questions
41 The material for armouring on cable is usually
A ssteel tape
B galvanised steel wire
C any of the above
D none of the above

Answer: any of the above
42 Which of the following protects a cable against mechanical injury ?
A Bedding
B Sheath
C Armouring
D none of the above

Answer: Armouring
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43 Which of the following insulation is used in cables ?
A Varnished cambric
B Rubber
C Paper
D Any of the above

Answer: Any of the above

Electrical Cables – Multiple Choice Questions with Answers | EBook

44 The thickness of the layer of insulation on the conductor, in cables, depends upon
A reactive power
B power factor
C voltage
D current carrying capacity

Answer: voltage
45 The bedding on a cable consists of
A hessian cloth
B jute
C any of the above
D none of the above

Answer: any of the above
46 The current carrying capacity of cables in D.C. is more thanthat in A.C. mainly due to
A absence of harmonics
B non-existence of any stability limit
C smaller dielectric loss
D absence of ripples

Answer: smaller dielectric loss
47 Conduit pipes are normally used to protect _____ cables.
A unsheathed cables
B armoured
C PVC sheathed cables
D all of the above

Answer: unsheathed cables
48 In single core cables armouring is not done to
A avoid excessive sheath losses
B make it flexible
C either of the above
D none of the above

Answer: avoid excessive sheath losses
49 In a cable, the maximum stress under operating conditions is at
A insulation layer
B sheath
C armour
D conductor surface

Answer: conductor surface
50 High tension cables are generally used up to
A 11kV
B 33kV
C 66 kV
D 132 kV

Answer: 11kV

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