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The bundled conductor in EHV transmission line system provides

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in Electric Power Transmission by
The bundled conductor in EHV transmission line system provides (a) increased inductance (b) reduced capacitance (c) increased capacitance (d) increased voltage gradient

Related questions

1 answer 25 views
Earth wire on EHV overhead transmission line is provided to protect the line against:

Earth wire on EHV overhead transmission line is provided to protect the line against:

asked May 22, 2018 in Electric Power Transmission by Shimroz123
0 answers 21 views
If diameter of each conductor of a transmission line is ‘d’, then the diameter of n-layer stranded conductor

If diameter of each conductor of a transmission line is ‘d’, then the diameter of n-layer stranded conductor will be (a) (2n – 1) d (b) (2n + 1) d (c) (3n – 1) d (d) (3n + 1) d 

asked May 26, 2018 in Electric Power Transmission by Shimroz123
0 answers 22 views
An overhead transmission line has a span of 260 m. The weight of the conductor is 0.68 kg/m. The maximum

An overhead transmission line has a span of 260 m. The weight of the conductor is 0.68 kg/m. The maximum allowable tension in the line is 1550 kg. Maximum sag of the line should be (a) 5.8 m (b) 4.6 m (c) 2.7 m (d) 3.7 m 

asked May 25, 2018 in Electric Power Transmission by Shimroz123
1 answer 11 views
For enhancing the power transmission in along EHV transmission line, the most preferred method is to

For enhancing the power transmission in along EHV transmission line, the most preferred method is to connect a  (A) Series inductive compensator in the line (B) Shunt inductive compensator at the receiving end (C) Series capacitive compensator in the line (D) Shunt capacitive compensator at the sending end

asked May 25, 2018 in Power system by Shimroz123
1 answer 20 views
Why are shunt reactors connected at the receiving end of long transmission line system:

Why are shunt reactors connected at the receiving end of long transmission line system: (1) To increase the terminal voltage (2) To compensate voltage rise caused by capacitive charging at light load (3) To improve power factor (4) None of these

asked May 22, 2018 in Electric Power Transmission by Shimroz123
1 answer 27 views
Series capacitive compensation in EHV transmission line is used to

Series capacitive compensation in EHV transmission line is used to

asked Apr 29, 2018 in Power system by Shimroz123
0 answers 9 views
Shielding angle of an EHV line is about

Shielding angle of an EHV line is about (a) 20° (b) 50° (c) 70° (d) 90°

asked May 25, 2018 in Electric Power Transmission by Shimroz123
1 answer 44 views
why we use aluminium conductor and not copper in transmission lines ?

why we use aluminium conductor and not copper in transmission lines ?

asked Aug 18, 2017 in Electric Power Transmission by Zeeshan
0 answers 32 views
In an AC transmission line difference in phase of voltage at two ends of the line is due to

In an AC transmission line difference in phase of voltage at two ends of the line is due to (a) System voltage (b) Insulators (c) Resistance of line (d) Reactance of line

asked May 26, 2018 in Electric Power Transmission by Shimroz123
0 answers 25 views
Which of the following is used for power factor improvement in transmission line ?

Which of the following is used for power factor improvement in transmission line ? (a) Three phase induction (b) An overexcited three phase synchronous motor running on no load (c) Three phase AC series motor (d) Choke

asked May 26, 2018 in Electric Power Transmission by Shimroz123
0 answers 18 views
The power loss in a transmission line depends on

The power loss in a transmission line depends on (a) current in the line. (b) resistance of the line. (c) length of the line. (d) All of the above 

asked May 26, 2018 in Electric Power Transmission by Shimroz123
0 answers 91 views
The presence of earth in case of overhead transmission line

The presence of earth in case of overhead transmission line (a) increases capacitance (b) increases inductance (c) decreases capacitance (d) decreases inductance

asked May 26, 2018 in Electric Power Transmission by Shimroz123
1 answer 79 views
how the booster is connected in transmission line ?

how the booster is connected in transmission line ?

asked Aug 18, 2017 in Electric Power Transmission by Zeeshan
0 answers 40 views
Effect of increase in temperature in an overhead transmission line is

Effect of increase in temperature in an overhead transmission line is (a) to increase stress and length both (b) to decrease stress and length both (c) to decrease stress and increase length (d) None of the above 

asked May 26, 2018 in Electric Power Transmission by Shimroz123
1 answer 80 views
Galloping in transmission line conductors arises generally due to

Galloping in transmission line conductors arises generally due to - (A) asymmetrical layer of ice formation (B) vortex phenomenon in light winds (C) heavy weight of line conductors (D) adoption of horizontal conductor

asked May 13, 2018 in Electric Power Transmission by Shimroz123
1 answer 115 views
In a transmission line if booster transformers are to be used, preferred location will be

In a transmission line if booster transformers are to be used, preferred location will be  (A) At the receiving end (B) At the sending end (C) At the intermediate point (D) Anywhere in the line 

asked May 8, 2018 in Electric Power Transmission by Shimroz123
0 answers 26 views
Which of the following relations is true for long transmission line ?

Which of the following relations is true for long transmission line ? (a) VS = AVR – BIR (b) VS = BVR + AIR (c) VS = AVR + BIR (d) VS = BVR – AIR

asked May 26, 2018 in Electric Power Transmission by Shimroz123
1 answer 380 views
The main consideration for operating transmission line at high voltage is

The main consideration for operating transmission line at high voltage is (a) to increase efficiency only. (b) to reduce power loss only. (c) to increase power transmission capability only. (d) All of the above

asked May 26, 2018 in Electric Power Transmission by Shimroz123
0 answers 19 views
A transmission line to be reciprocal, the condition is

A transmission line to be reciprocal, the condition is (a) A = D (b) AC – BD = 1 (c) AD – BC = 1 (d) AB – CD = 1  

asked May 25, 2018 in Electric Power Transmission by Shimroz123
1 answer 12 views
The input impedance of a short circuited loss less transmission line of characteristic impedance 50 Ohm is

The input impedance of a short circuited loss less transmission line of characteristic impedance 50 Ohm is

asked May 23, 2018 in Electric Power Transmission by Shimroz123
1 answer 20 views
What type of insulator will be used if the direction of the transmission line is to be changed?

What type of insulator will be used if the direction of the transmission line is to be changed?

asked May 22, 2018 in Electric Power Transmission by Shimroz123
1 answer 40 views
The inductance of single phase two wire power transmission line per km gets doubled when the

The inductance of single phase two wire power transmission line per km gets doubled when the  (a) Distance between wires is doubled  (b) Distance between the wires is increased four fold  (c) Distance between the wires is increased as square of the original distance  (d) Radius of the wire is doubled

asked May 13, 2018 in Electric Power Transmission by Shimroz123
1 answer 27 views
The inductance of a power transmission line increases with

The inductance of a power transmission line increases with (A) decrease in line length. (B) increase in conductor diameter. (C) increase in spacing between phase conductors. (D) increase in load current carried by conductors.

asked May 13, 2018 in Electric Power Transmission by Shimroz123
1 answer 18 views
Bundled conductors are mainly used in high voltage overhead transmission lines to

Bundled conductors are mainly used in high voltage overhead transmission lines to (a) Reduce line loss (c) Reduce corona (b) Reduce harmonics (d) Increase strength

asked Apr 25, 2018 in Electrical Engineering by Shimroz123
0 answers 119 views
A Transmission line conductor has been suspended freely from two towers and has taken the form of a...

A Transmission line conductor has been suspended freely from two towers and has taken the form of a catenary that has c = 487.68m. The span between the two towers is 152 m, and the weight of the conductor is 1160 kg/km. Calculate the length of the conductor.  (A) 487.68 m (B) 152.614 m (C) 5.934 m (D) 11.9 m 

asked Apr 5, 2018 in Electrical Engineering by Shimroz123
1 answer 21 views
The line conductor of a transmission line has an overall diameter of ...

The line conductor of a transmission line has an overall diameter of 19.53 mm, weight 0.844 kg/m and an ultimate breaking strength of 7950 kg. If the factor of safety is to be 2, when conductor has an ice of 1 kg/m and a horizontal wind pressure of 1.5 kg/m. What is the vertical sag, corresponding to this loading for a 300 m span level supports?

asked Mar 27, 2018 in Power system by Shimroz123
2 answers 48 views
A long transmission line has considerable ……………….. effect.

A long transmission line has considerable ……………….. effect. A) series capacitance B) shunt capacitance C) series inductance D) shunt inductance

asked Jun 4, 2018 in Electric Power Transmission by Shimroz123
1 answer 46 views
A single-line-to-ground fault on a overhead transmission line creates

A single-line-to-ground fault on a overhead transmission line creates (A) voltage sag (B) voltage swell (C) over voltage (D) voltage flicker 

asked Jun 4, 2018 in Electric Power Transmission by Shimroz123
1 answer 30 views
For a transmission line open circuit and short circuit impedances are 20 Ω and 5 Ω. Then characteristic

For a transmission line open circuit and short circuit impedances are 20 Ω and 5 Ω. Then characteristic impedance is: (1) 100 Ω (2) 50 Ω (3) 25 Ω (4) 10 Ω

asked May 29, 2018 in Electric Power Transmission by Shimroz123
1 answer 26 views
To increase power transfer capability of a long transmission line, we should:

To increase power transfer capability of a long transmission line, we should:  (1) Increase line resistance (2) Increase transmission voltage (3) Decrease line reactance (4) Both (2) & (3)

asked May 22, 2018 in Electric Power Transmission by Shimroz123
1 answer 30 views
Stability of a transmission line can be increased by

Stability of a transmission line can be increased by

asked May 8, 2018 in Electric Power Transmission by Shimroz123
1 answer 89 views
A transmission line has 1 P.0 impedance on a base of 11 KV, 100 MVA. On a base of 55 KV. it will have a P.0 impedance of

A transmission line has 1 P.0 impedance on a base of 11 KV, 100 MVA. On a base of 55 KV. it will have a P.0 impedance of

asked May 3, 2018 in Electric Power Transmission by Shimroz123
1 answer 55 views
How many insulator disc used for 33 kV transmission voltage line?

How many insulator disc used for 33 kV transmission voltage line?

asked Dec 5, 2017 in Electric Power Transmission by Quiz
1 answer 18 views
A transmission line conductor at a river crossing is supported from two...

A transmission line conductor at a river crossing is supported from two towers at height. of 30 m and 90m, above water level. The horizontal distance between the towers is 270m, if the tension in the conductor is 1800 kg and the conductor weight 1 kg/m. What is the clearance between the conductor and the water at a point midway between the towers?

asked Mar 27, 2018 in Power system by Shimroz123
1 answer 134 views
Shunt compensation in an EHV line is used to

Shunt compensation in an EHV line is used to (A) Improve stability. (B) Improve the voltage profile. (C) Reduce the fault level. (D) Substitute for synchronous phase modifier.

asked May 8, 2018 in Power system by Shimroz123
1 answer 15 views
Choose two appropriate auxiliary components of a HVDC transmission system from the following P. D.C line

Choose two appropriate auxiliary components of a HVDC transmission system from the following P. D.C line inductor Q. A.C line inductor R. Reactive power sources S. Distance relays on D.C line T. Series capacitance on A.C. line  (A) P and Q (B) P and R (C) Q and S (D) S and T

asked May 25, 2018 in Power system by Shimroz123
0 answers 23 views
In long AC transmission lines, the receiving end voltage becomes greater than sending end voltage at light

In long AC transmission lines, the receiving end voltage becomes greater than sending end voltage at light load or no load operation. This is due to (a) Ferranti effect (b) Skin effect (c) Proximity effect (d) Corona effect 

asked May 26, 2018 in Electric Power Transmission by Shimroz123
1 answer 391 views
In which of the following transmission lines, the value of the Shunt admittance should be

In which of the following transmission lines, the value of the Shunt admittance should be approximated to zero ? (A) A 66 kV 35 km long line (B) A 132 kV 200 km long line (C) A 220 kV 300 km long line (D) A 400 kV 500 km long line

asked May 8, 2018 in Electric Power Transmission by Shimroz123
1 answer 70 views
In case the height of transmission tower is increased, which of the following parameter is likely to change?

In case the height of transmission tower is increased, which of the following parameter is likely to change?  (A) Resistance (B) Inductance (C) Capacitance (D) None of the above

asked May 8, 2018 in Electric Power Transmission by Shimroz123
1 answer 82 views
The purpose of guard ring in transmission lines is to

The purpose of guard ring in transmission lines is to  (1) reduce the earth capacitance of the lowest unit. (2) increase the earth capacitance of the lowest unit. (3) reduce the transmission lines losses. (4) reduce the reactance of the line

asked May 1, 2018 in Electric Power Transmission by Shimroz123
0 answers 69 views
The economic size of a conductor in transmission and distribution lines of electric power is decided by

The economic size of a conductor in transmission and distribution lines of electric power is decided by (a) Ohm’s law (b) Kelvin’s law (c) Kirchhoff’s law(d) Faraday’s law 

asked May 26, 2018 in Alternator by Shimroz123
1 answer 45 views
HVDC transmission is preferred to EHV AC because

HVDC transmission is preferred to EHV AC because  (a) HVDC terminal equipments are inexpensive  (b) VAR compensation is not required in HVDC systems  (c) System stability can be improved  (d) Harmonic problem is avoided 

asked May 13, 2018 in Electrical Engineering by Shimroz123
1 answer 20 views
Corona loss is less when the shape of conductor is:

Corona loss is less when the shape of conductor is:

asked May 22, 2018 in Electric Power Transmission by Shimroz123
1 answer 23 views
A 3 layer, total diameter of an ACSR conductor is 5 cm. Find the diameter of each strand?

A 3 layer, total diameter of an ACSR conductor is 5 cm. Find the diameter of each strand?

asked May 8, 2018 in Electric Power Transmission by Shimroz123
1 answer 19 views
In case of a ‘High Voltage DC’ transmission, how many minimum conductors are required?

In case of a ‘High Voltage DC’ transmission, how many minimum conductors are required?

asked May 22, 2018 in Electric Power Transmission by Shimroz123
0 answers 45 views
in the above question find the sending end voltage of the transmission line
asked Sep 17, 2018 by anonymous
1 answer 122 views
A 50Ω transmission line is terminated in an impedance of 20-j50. What will be the reflection coefficient?

A 50Ω transmission line is terminated in an impedance of 20-j50. What will be the reflection coefficient? A) 0.69 B) 1.69 C) 6.9 D) 16.9 

asked Jun 18, 2018 in Electrical Engineering by Shimroz123
0 answers 50 views
A single phase transmission line and a telephone line are both symmetrically strung one below the other, in

A single phase transmission line and a telephone line are both symmetrically strung one below the other, in horizontal configurations, on a common tower, The shortest and longest distances between the phase and telephone conductors are 2.5 m and 3 m respectively. The voltage (volt/km) induced in the telephone circuit, due to 50 Hz current of 100 amps in the power circuit is (A) 4.81 (B) 3.56 (C) 2.29 (D) 1.27

asked May 25, 2018 in Power system by Shimroz123
1 answer 15 views
For a fixed value of complex power flow in a transmission line having a sending and voltage V, the real

For a fixed value of complex power flow in a transmission line having a sending and voltage V, the real power loss will be proportional to  A) V B) v2 C) 1/V2 D)1/V

asked May 20, 2018 in Power system by Shimroz123

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