Related Questions

Rubber is most commonly used insulation in cables.
A Yes
B No
Which of the following insulation is used in cables?
A Varnished cambric
B Rubber
C Paper
D Any of the above
The material generally used for armour of high voltage cables is
A Aluminium
B Steel
C Brass
D Copper
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
The line insulation is the insulation level of the station equipment.
A less than
B same as
C more than
D proportional to
E not directly related with
The insulation between windings and grounded core and the insulation between the windings of the same phase is
A minor insulation
B major insulation
C either of the above
D none of the above
Upto the critical radius of insulation, added insulation, will
A Increase the heat loss
B Decrease heat loss and will have no effect beyond that
C Decrease heat flux
D Reduce convection heat loss compared to conduction heat less
The operating voltage of high voltage cables is up to
A l.lkV
B 3.3kV
C 6.6kV
D llkV
A practical formula for determining the thickness of insulation between low voltage and high voltage windings is
A 1 + 0.2 kV mm
B 2 + 0.5 kV mm
C 4 + 0.7 kV mm
D 5 + 0.9 kV mm
The material commonly used for sheaths of underground cables is
A Lead
B Rubber
C Copper
D Iron

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