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MCQs

Total Questions : 164 | Page 13 of 17 pages
Question 121. Dielectric strength of rubber is around____________?
  1.    5 kV/mm
  2.    15 kV/mm
  3.    30 kV/mm
  4.    200 kV/mm
 Discuss Question
Answer: Option C. -> 30 kV/mm
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 122. In the cables, the location of fault is usually found out by comparing____________?
  1.    the resistance of the conductor
  2.    the inductance of conductors
  3.    the capacitances of insulated conductors
  4.    all above parameters
 Discuss Question
Answer: Option C. -> the capacitances of insulated conductors
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 123. The minimum dielectric stress in a cable is at_____________?
  1.    armour
  2.    bedding
  3.    conductor surface
  4.    lead sheath
 Discuss Question
Answer: Option D. -> lead sheath
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 124. Low tension cables are generally used up to___________?
  1.    200 V
  2.    500 V
  3.    700 V
  4.    1000 V
 Discuss Question
Answer: Option D. -> 1000 V
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 125. Cables, generally used beyond 66 kV are___________?
  1.    oil filled
  2.    S.L. type
  3.    belted
  4.    armoured
 Discuss Question
Answer: Option A. -> oil filled
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 126. High tension cables are generally used up to_____________?
  1.    11kV
  2.    33kV
  3.    66 kV
  4.    132 kV
 Discuss Question
Answer: Option A. -> 11kV
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 127. The surge resistance of cable is__________?
  1.    5 ohms
  2.    20 ohms
  3.    50 ohms
  4.    100 ohms
 Discuss Question
Answer: Option C. -> 50 ohms
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 128. In capacitance grading of cables we use a _______ dielectric?
  1.    composite
  2.    porous
  3.    homogeneous
  4.    hygroscopic
 Discuss Question
Answer: Option A. -> composite
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 129. Conduit pipes are normally used to protect _______ cables
  1.    unsheathed cables
  2.    armoured
  3.    PVC sheathed cables
  4.    all of the above
 Discuss Question
Answer: Option A. -> unsheathed cables
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 130. The material for armouring on cable is usually__________?
  1.    steel tape
  2.    galvanised steel wire
  3.    any of the above
  4.    none of the above
 Discuss Question
Answer: Option C. -> any of the above
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

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