Q.1.
Which of the following generating machine will offer constant voltage on all loads?
Q.2.
The e.m.f. induced in the armature of a shunt generator is 600 V. The armature resistance is 0.1 ohm. If the armature current is 200 A, the terminal voltage will be
Q.3.
Shunt generators are most suited for stable parallel operation because of their
Q.4.
Permeance is the reciprocal of
Q.5.
The number of brushes in a commutator depends on
Q.6.
The minimum dielectric stress in a cable is at
Q.7.
What is Superman's birth name?
Q.8.
Cables, generally used beyondkV are
Q.9.
The metallic sheath may be made of lead or lead alloy or of aluminium.
Q.10.
Polyethylene has very poor dielectric and ageing properties.
Q.11.
Rubber is most commonly used insulation in cables.
Q.12.
Rubber is most commonly used insulation in cables.
Q.13.
Natural rubber is obtained from milky sap of tropical trees.
Q.14.
Natural rubber is obtained from milky sap of tropical trees.
Q.15.
In congested areas where excavation is expensive and inconvenient 'draw in system'of laying of underground cables is often adopted.
Q.16.
In congested areas where excavation is expensive and inconvenient 'draw in system'of laying of underground cables is often adopted.
Q.17.
In capacitance grading a homogeneous dielectric is used.
Q.18.
In capacitance grading a homogeneous dielectric is used.
Q.19.
The advantage of oil filled cables is
Q.20.
The advantage of oil filled cables is
Q.21.
The insulating material should have
Q.22.
The insulating material should have
Q.23.
Copper as conductor for cables is used as
Q.24.
If a power cable and a communication cable are to run parallel the minimum distancebetween the two, to avoid interference, should be
Q.25.
Is a cable is to be designed for use onkV, which insulation would you prefer ?
Q.26.
Cables forkV lines are invariably
Q.27.
The thickness of metallic shielding on cables is usually
Q.28.
Underground cables are laid at sufficient depth
Q.29.
Capacitance grading of cable implies
Q.30.
In a cable the voltage stress is maximum at