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Electrical Cables(Engineering > Electrical Engineering ) Questions and Answers
Home
Topic
Engineering
Electrical Engineering
Electrical Cables
Question 1.
The bedding on a cable consists of
Hessian cloth
Jute
Any of the above
None of the above
Explanation:-
Answer: Option C. ->
Any of the above
Question 2.
The insulating material for a cable should have
Low cost
High dielectric strength
High mechanical strength
All of the above
Explanation:-
Answer: Option D. ->
All of the above
Question 3.
Underground cables are laid at sufficient depth
To minimize temperature stresses
To avoid being unearthed easily due to removal of soil
To minimize the effect of shocks and vibrations due to gassing vehicles, etc.
For all of the above reasons
Explanation:-
Answer: Option C. ->
To minimize the effect of shocks and vibrations due to gassing vehicles, etc.
Question 4.
In capacitance grading a homogeneous dielectric is used.
Yes
No
Explanation:-
Answer: Option B. ->
No
Question 5.
Dielectric strength of rubber is around
5 kV/mm
15 kV/mm
30 kV/mm
200 kV/mm
Explanation:-
Answer: Option C. ->
30 kV/mm
Question 6.
The material for armouring on cable is usually
Steel tape
Galvanized steel wire
Any of the above
None of the above
Explanation:-
Answer: Option C. ->
Any of the above
Question 7.
In the cables, sheaths are used to
Prevent the moisture from entering the cable
Provide enough strength
Provide proper insulation
None of the above
Explanation:-
Answer: Option A. ->
Prevent the moisture from entering the cable
Question 8.
In a cable immediately above metallic sheath ________ is provided.
Earthing connection
Bedding
Armouring
None of the above
Explanation:-
Answer: Option B. ->
Bedding
Question 9.
In capacitance grading of cables we use a _________ dielectric.
Composite
Porous
Homogeneous
Hygroscopic
Explanation:-
Answer: Option A. ->
Composite
Question 10.
The insulating material for cables should
Be acid proof
Be non-inflammable
Be non-hygroscopic
Have all above properties
Explanation:-
Answer: Option D. ->
Have all above properties
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