Power System - I (3140914) MCQs

MCQs of Transmission Line Parameters

Showing 31 to 40 out of 103 Questions
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31.
As frequency increases the flux inside the conductor
(a) Increases
(b) Decreases
(c) Constant
(d) Vanishes
Answer:

Option (b)

32.
Self GMD is
(a) More than GMR
(b) Less than GMR
(c) Both are same
(d) None of above
Answer:

Option (c)

33.
GMR of a solid conductor is
(a) 0.707r
(b) 0.909r
(c) 0.505r
(d) 0.717r
Answer:

Option (a)

34.
Skin effect of a conductor will increase when
(a) Diameter decreases
(b) Resistivity decreases
(c) Frequency decreases
(d) All of above
Answer:

Option (b)

35.
The fact that a current density is higher at the surface when compared to center is known as
(a) Skin effect
(b) Corona
(c) Proximity effect
(d) All of above
Answer:

Option (a)

36.
Inductance of single phase two wire line is
(a) 4×10–7ln(Dm/Ds) H/m
(b) 0.4×10–7ln(Dm/Ds) H/m
(c) 4×10–7ln(Ds/Dm) H/m
(d) 0.4×10–7ln(Ds/Dm) H/m
Answer:

Option (a)

37.
ACSR means
(a) Aluminum core steel reinforced
(b) Aluminum conductor steel reinforced
(c) Aluminum copper steel reinforced
(d) All conductor steel reinforced
Answer:

Option (b)

38.
If diameter of conductor is increased
(a) Inductance is increased
(b) Inductance is decreased
(c) Resistance is decreased
(d) No change in inductance and resistance
Answer:

Option (b)

39.
If the self GMD of the conductor is 2.77r, then what is the GMR of the same conductor?
(a) 2.77r
(b) 1.385r
(c) 5.54r
(d) (2.77 + 1)r
Answer:

Option (a)

40.
Specification of ACSR conductor with 7 strands of steel and 24 strands of aluminum is
(a) 24/7
(b) 7/24
(c) 7/31
(d) 31/7
Answer:

Option (a)

Showing 31 to 40 out of 103 Questions
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