A standard conductor cable is
expressed as 3/0.029. The number of strands in the cable is :
In a cable voltage stress is maximum:
Consider the following properties regarding insulation for cables :
1. A low specific resistance
2. High temperature withstand
3. High dielectric strength
Which of the above properties of
insulation are correct while using cables?
A concentric cable has a conductor
diameter of 1 cm and an insulation thickness of 1.5 cm. When the cable is
subjected to a test pressure of 33kV, the maximum field strength will be nearly
For selecting low voltage cable which
of the following factors is not important?
Which of the following cable is extensively used for high tension and
low tension work?
Core is insulated by ________ in a
belted cable :
Low voltage cable have operating
voltage upto:
Screened cables can be used for voltages
:
___________ is done just above
bedding’s surface.
If the length of a cable is doubled,
then its insulation resistance will:
Insulation resistance of a straight
cable is :
Cables in power transmission line are
provided with inter sheaths to:
Which of the following is NOT a property of good insulating material
used for cables?
What is the insulation resistance of
100 km cable, if the insulation resistance is 10 
for 50 km ?
What should be the minimum depth of
trench from the ground level for cables carrying voltage between 3.3 kV and 11
kV ?
In which of the following applications is armoured cable used?
A cable is 300 km long and has a
conductor of 0.50 cm diameter with an insulation covering of 0.40 cm thickness.
What is the capacitance of the cable if relative permittivity is 4.5 ?
For smaller installations where lengths
are small and a number of joints is required, Vulcanized India Rubber (VIR)
cables are preferred over paper insulated cables because :
Working voltage of medium grade cables
is
Which of the following is a major power factor?
The insulating material for cable
should have following properties
Which among the following cable are generally suited for the voltage up
to 11 kV?
High voltage cables which are used for
132 kV for these core's are
The surge resistance of cable is
The minimum dielectric stress in a cable is at
Underground cables are laid at
sufficient depth
While laying any 11 kV underground
(U.G.) cable with diameter D. The minimum bending radius has to be
Screening is provided in high voltage
cables
What is the full form of XLPE Cable ?
What is the purpose of armouring in
the under ground (UG) cable?
__________ is the most commonly used insulation in cables
Cables used for 220 kV lines are
________ insulated.
In an underground cable, insulating material used is __________.
HT cables are generally used upto.
If the insulation resistance of 2 m
long sample of a cable is 10 
, then a 8 m long sample of the same will have an insulation
resistance of
In an insulated cable having core
diameter d and overall diameter D, the ratio of maximum to minimum dielectric
stress is given by
The capacitance measured between any
two cores of a 3 - core cable with the sheath earthed is 3 
. The capacitance per phase will be
The small pockets of air in the high
voltage cable provide _______ relative permittivity, _____ electric field and
at these sites breakdown is likely to be initiated.
In cables, the thickness of the layer
of insulation on the conductor depends upon :
The material commonly used for sheaths of underground cable is :
The underground system cannot be
operated above :
The insulating material for cables
should have :
The material for armouring on cable is usually
Cables:
Which of the following methods is used for laying of underground cables?
Cable impregnation means application
of __________ compound on the paper used in cables.
Sheaths are used in the cables to
Which type of cable does not
requirebedding ?
Multicore cables generally use