Power System - I (3140914) MCQs

MCQs of Mechanical Features and Design of Overhead Transmission Line

Showing 31 to 40 out of 108 Questions
1 2 3 4 5 6
31.
Guy wire is employed for
(a) Providing protection against surges
(b) Providing emergency earth route
(c) Supporting the pole
(d) All of above
Answer:

Option (c)

32.
Material used in overhead transmission line is
(a) Steel-cored aluminum
(b) Galvanized steel
(c) Cadmium copper
(d) All of above
Answer:

Option (d)

33.
Which material is not used for transmission and distribution of electrical power?
(a) Tungsten
(b) Copper
(c) Aluminum
(d) Cadmium Copper
Answer:

Option (a)

34.
The sag of transmission line is least affected owing to
(a) Weight of conductor
(b) Current through the conductor
(c) Atmospheric temperature
(d) Ice deposition on conductor
Answer:

Option (b)

35.
Increase in temperature in overhead transmission line causes
(a) Increase in stress and length
(b) Decrease in stress and length
(c) Decrease in stress but increases length
(d) None of above
Answer:

Option (c)

36.
Effect of temperature rise in overhead lines
(a) Increases sag and deceases tension
(b) Deceases sag and Increases tension
(c) Increases sag and tension
(d) Deceases sag and tension
Answer:

Option (a)

37.
Sag of transmission line conductor in summer is
(a) Less than in winter
(b) More than in winter
(c) Same in winter
(d) Can’t say anything
Answer:

Option (b)

38.
Sag of transmission line depends on
(a) Span length
(b) Tension in conductor
(c) Weight of conductor
(d) All of above
Answer:

Option (d)

39.
Between two supports, due to sag the conductor takes form of
(a) Semi-circle
(b) Catenary
(c) Hyperbola
(d) None of above
Answer:

Option (b)

40.
Effect of ice deposition on conductor is to increase the
(a) Weight of conductor
(b) Transmission line loss
(c) Resistance of conductor
(d) Skin effect
Answer:

Option (a)

Showing 31 to 40 out of 108 Questions
1 2 3 4 5 6