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MCQs

Total Questions : 164 | Page 15 of 17 pages
Question 141. The metallic sheath may be made of lead or lead alloy or of aluminium ?
  1.    Yes
  2.    No
 Discuss Question
Answer: Option B. -> No
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 142. If the length of a cable is doubled, its capacitance____________?
  1.    becomes one-fourth
  2.    becomes one-half
  3.    becomes double
  4.    remains unchanged
 Discuss Question
Answer: Option C. -> becomes double
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 143. In congested areas where excavation is expensive and inconvenient ‘draw in system’ of laying of underground cables is often adopted
  1.    Yes
  2.    No
 Discuss Question
Answer: Option A. -> Yes
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 144. In the cables, sheaths are used to___________?
  1.    prevent the moisture from entering the cable
  2.    provide enough strength
  3.    provide proper insulation
  4.    none of the above
 Discuss Question
Answer: Option A. -> prevent the moisture from entering the cable
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 145. In capacitance grading a homogeneous dielectric is used
  1.    Yes
  2.    No
 Discuss Question
Answer: Option B. -> No
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 146. Polyethylene has very poor dielectric and ageing properties
  1.    Yes
  2.    No
 Discuss Question
Answer: Option B. -> No
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 147. Natural rubber is obtained from milky sap of tropical trees
  1.    Yes
  2.    No
 Discuss Question
Answer: Option A. -> Yes
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 148. Rubber is most commonly used insulation in cables
  1.    Yes
  2.    No
 Discuss Question
Answer: Option A. -> Yes
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 149. If a power cable and a communication cable are to run parallel the minimum distance between the two, to avoid interference, should be______________?
  1.    2 cm
  2.    10 cm
  3.    50 cm
  4.    400 cm
 Discuss Question
Answer: Option C. -> 50 cm
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 150. The insulating material should have____________?
  1.    low permittivity
  2.    high resistivity
  3.    high dielectric strength
  4.    all of the above
 Discuss Question
Answer: Option D. -> all of the above
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

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