A. insulation layer
B. sheath
C. armour
D. conductor surface
Related Mcqs:
- A certain cable has an insulation of relative permittivity 4. If the insulation is replaced by one of relative permittivity 2, the capacitance of the cable will become_____________?
A. one half
B. double
C. four times
D. none of the above - If a power cable and a communication cable are to run parallel the minimum distance between the two, to avoid interference, should be______________?
A. 2 cm
B. 10 cm
C. 50 cm
D. 400 cm - If a cable of homogeneous insulation has a maximum stress of 10 kV/mm, then the dielectric strength of insulation should be_______________?
A. 5 kV/mm
B. 10 kV/mm
A. 15 kV/mm
D. 30 kV/mm - In a cable the voltage stress is maximum at____________?
A. sheath
B. insulator
E. surface of the conductor
D. core of the conductor - The minimum dielectric stress in a cable is at_____________?
A. armour
B. bedding
C. conductor surface
D. lead sheath - The insulating material for a cable should have__________?
A. low cost
B. high dielectric strength
C. high mechanical strength
D. all of the above - The surge resistance of cable is__________?
A. 5 ohms
B. 20 ohms
C. 50 ohms
D. 100 ohms - If the length of a cable is doubled, its capacitance____________?
A. becomes one-fourth
B. becomes one-half
C. becomes double
D. remains unchanged - 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 - The insulation of the cable decreases with__________?
A. the increase in length of the insulation
B. the decrease in the length of the insulation
C. either A. or (b)
D. none of the above
