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.Management Sciences
Category: Cables
Low tension cables are generally used up to___________?
A. 200 V
B. 500 V
C. 700 V
D. 1000 V
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
A cable carrying alternating current has__________?
A. hysteresis losses only
B. hysteresis and leakage losses only
C. hysteresis, leakage and copper losses only
D. hysteresis, leakage, copper and friction losses
In the cables, sheaths are used to___________?
A. prevent the moisture from entering the cable
B. provide enough strength
E. provide proper insulation
D. none of the above
In capacitance grading of cables we use a _______ dielectric?
A. composite
B. porous
C. homogeneous
D. hygroscopic
Copper as conductor for cables is used as________?
A. annealed
B. hardened and tempered
C. hard drawn
D. alloy with chromium
The insulating material for cables should____________?
A. be acid proof
B. be non-inflammable
C. be non-hygroscopic
D. have all above properties
The insulating material should have____________?
A. low permittivity
B. high resistivity
C. high dielectric strength
D. all of the above
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