Q.1
The angular displacement between two interconnected stations is mainly due to
Q.2
The operating voltage of super-tension cables is up to
Q.3
Which of the following is the demerit of a 'constant voltage transmission system'?
Q.4
Electromechanical voltage regulators are generally used in
Q.5
Which of the following D.C. distribution system is the simplest and lowest in first cost?
Q.6
Aluminium has a specific gravity of
Q.7
In AC.S.R. Conductors, the insulation between aluminium and steel conductors is
Q.8
Which of the following regulations is considered best?
Q.9
Overhead lines generally use
Q.10
A uniformly loaded D.C. distributor is fed at both ends with equal voltages. As compared to a similar distributor fed at one end only, the drop at the middle point is
Q.11
The current drawn by the line due to corona losses is
Q.12
By which of the following systems electric power may be transmitted?
Q.13
Low voltage cables are meant for use up to
Q.14
Transmitted power remaining the same, if supply voltage of a D.C. 2-wire feeder is increased 100 percent, saving in copper is
Q.15
are the conductors, which connect the consumer's terminals to the distribution
Q.16
The material commonly used for sheaths of underground cables is
Q.17
For which of the following equipment current rating is not necessary?
Q.18
For an overhead line, the surge impedance is taken as
Q.19
Which of the following distribution systems is more reliable?
Q.20
The usual spans with R.C.C. poles are
Q.21
The phenomenon of rise in voltage at the receiving end of the open-circuited or lightly loaded line is called the
Q.22
Series capacitors on transmission lines are of little use when the load VAR requirement is
Q.23
The distributors for residential areas are
Q.24
The material commonly used for insulation in high voltage cables is
Q.25
The voltage drop, for constant voltage transmission is compensated by installing
Q.26
The operating voltage of extra high tension cables is upto
Q.27
Most of the high voltage transmission lines in India are
Q.28
There is a greater possibility of occurrence of corona during
Q.29
By which of the following methods string efficiency can be improved?
Q.30
The power factor of industrial loads is generally
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