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Free download in PDF Transmission Line MCQs and Answers for competitive exams. These short objective type questions with answers are very important for Board exams as well as competitive exams like IIT-JEE, B-Tech etc. These short solved questions or quizzes are provided by Gkseries.
81
Which of the following materials is not used for transmission and distribution of electrical power ?
[A]
Copper
[B]
Aluminium
[C]
Steel
[D]
Tungsten
82
The corona is considerably affected by which of the following ?
[A]
Size of the conductor
[B]
Shape of the conductor
[C]
Surface condition of the conductor
[D]
All of the above
83
310 km line is considered as
[A]
a long line
[B]
a medium line
[C]
a short line
[D]
any of the above
84
The phenomenon qf rise in voltage at the receiving end of the open-circuited or lightly loaded line is called the
[A]
Seeback effect
[B]
Ferranti effect
[C]
Raman effect
[D]
Any of the above
85
Which of the following is the demerit of a ‘constant voltage transmission system’ ?
[A]
Increase of short-circuit current of the system
[B]
Availability of steady voltage at all loads at the line terminals
[C]
Possibility of better protection for the line due to possible use of higher terminal reactants
[D]
Improvement of power factor at times of moderate and heavy loads
Answer: Increase of short-circuit current of the system
86
The operating voltage of supertension cables is up to
[A]
3.3 kV
[B]
6.6 kV
[C]
11 kV
[D]
33 kV
87
Which of the following D.C. distribution system is the simplest and lowest in first cost ?
[A]
Radial system
[B]
Ring system
[C]
Inter-connected system
[D]
None of the above
88
Besides a method of trial and error, which of the following methods is employed for solution of network problems in interconnected system ?
[A]
Circulating current method
[B]
Thevenin’s theorem
[C]
Superposition of currents
[D]
All of the above
89
Most of the high voltage transmission lines in India are
[A]
underground
[B]
overhead
[C]
either of the above
[D]
none of the above
90
High voltage transmission lines use
[A]
suspension insulators
[B]
pin insulators
[C]
both (a) and (b)
[D]
none of the above
Answer: suspension insulators
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