Power System - I (3140914) MCQs

MCQs of Underground Cables

Showing 1 to 10 out of 112 Questions
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1.
Transmission of power by AC cables is impossible beyond
(a) 35 to 45 km
(b) 500 km
(c) 300 km
(d) 1000 km
Answer:

Option (a)

2.
Conduit pipe is generally employed for protection of
(a) Unsheathed cables
(b) Armored cables
(c) PVC  sheathed cables
(d) All of above
Answer:

Option (a)

3.
Sheaths are used in cable to
(a) Provide proper insulation
(b) Provide mechanical strength
(c) To prevent ingress of moisture
(d) None of above
Answer:

Option (c)

4.
The material commonly used for sheaths of underground cables is
(a) Copper
(b) Lead
(c) Steel
(d) Rubber
Answer:

Option (b)

5.
The  bedding on a cable consists of
(a) Jute  strands
(b) Hessian  tape
(c) Paper tape compounded with fibrous material
(d) Any of above
Answer:

Option (d)

6.
The material used for armouring of underground cables is
(a) Galvanized steel wire
(b) Steel tape
(c) Aluminum
(d) Either (a) or (b)
Answer:

Option (d)

7.
Which of the following protects the underground cable against mechanical injury?
(a) Armouring
(b) Bedding
(c) Sheath
(d) None of above
Answer:

Option (a)

8.
Metallic shielding is provided on underground cables to
(a) Reduce thermal resistance
(b) Reduce corona effect
(c) Control the electrostatic voltage stress
(d) All of above
Answer:

Option (d)

9.
Metallic shielding provided on cable is usually of thickness
(a) 0.1 to 0.8 mm
(b) 3 to 5 mm
(c) 10 to 15 mm
(d) 15 to 25 mm
Answer:

Option (b)

10.
The effect of bonding the cable is
(a) To increase the effective resistance and inductance
(b) To increase the effective resistance but reduce inductance
(c) To reduce the effective resistance and inductance
(d) To reduce the effective resistance but increase the inductance
Answer:

Option (b)

Showing 1 to 10 out of 112 Questions
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