Electrical Installation And Wiring MCQ Part 2
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Attempt Free Electrical Installation And Wiring MCQ Part 2 Here. Read The Important Electrical MCQ From Below.
Q1. Underground cables are laid at sufficient depth
A. to minimise temperature stresses
B. to avoid being unearthed easily due to removal of soil
C. to minimise the effect of shocks and vibrations due to passing vehicles, etc.
D. for all of the above reasons
Answer : C
Q2. The disadvantage with paper as insulating material is
A. it is hygroscopic
B. it has high capacitance
C. it is an organic material
D. none of the above
Answer : A
Electrical Installation And Wiring MCQ Part 2
Q3. 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 : C
Q4. 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 : A
Electrical Installation And Wiring MCQ Part 2
Q5. Pressure cables are generally not used beyond
A. 11 kV
B. 33 kV
C. 66 kV
D. 132 kV
Answer : C
Q6. In the cables, sheaths are used to
A. prevent the moisture from entering the cable
B. provide enough strength
C. provide proper insulation
D. none of the above
Answer : A
Electrical Installation And Wiring MCQ Part 2
Q7. The advantage of cables over overhead transmission lines is
A. easy maintenance
B. low cost
C. can be used in congested areas
D. can be used in high voltage circuits
Answer : C
Q8. The breakdown voltage of a cable depends on
A. presence of moisture
B. working temperature
C. time of application of the voltage
D. all of the above
Answer : D
Electrical Installation And Wiring MCQ Part 2
Q9. The bedding on a cable consists of
A. hessian cloth
B. jute
C. any of the above
D. none of the above
Answer : C
Q10. Dielectric strength of rubber is around
A. 5 kV/mm
B. 15 kV/mm
C. 30 kV/mm
D. 200 kV/man
Answer : C
Electrical Installation And Wiring MCQ Part 2
Q11. The material for armouring on cable is usually
A. steel tape
B. galvanised steel wire
C. any of the above
D. none of the above
Answer : C
Q12. The intersheaths in the cables are used to
A. minimize the stress
B. avoid the requirement of good insulation
C. provide proper stress distribution
D. none of the above
Answer : C
Electrical Installation And Wiring MCQ Part 2
Q13. The thickness of metallic shielding on cables is usually
A. 0.04 mm
B. 0.2 to 0.4 mm
C. 3 to 5 mm
D. 40 to 60 mm
Answer : C
Q14. The insulating material for cables should
A. be acid proof
B. be non-inflammable
C. be non-hygroscopic
D. have all above properties
Answer : D
Electrical Installation And Wiring MCQ Part 2
Q15. Low tension cables are generally used upto
A. 200 V
B. 500 V
C. 700 V
D. 1000 V
Answer : D
