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

View Answer

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

View Answer

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

View Answer

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

View Answer

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

View Answer

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

View Answer

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

View Answer

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

View Answer

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

View Answer

Answer: conductor surface

50 High tension cables are generally used up to

A 11kV

B 33kV

C 66 kV

D 132 kV

View Answer

Answer: 11kV

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