What are the losses in a transmission line?

Question

asked Mar 10, 2018 by anonymous

50 views

Please log in or register to answer this question.

Related questions

asked Sep 22, 2018 by anonymous

Explain following techniques related to energy conservation in transmission and distribution system. (i) By balancing phase currents (ii) Variable technical losses (I2R losses).

Last answer: (i) Balancing Phase currents: Proper (healthy balanced) three phase loads always draw equal currents in all lines but single phase loads in the 3 phase 4 wire system or loads connected between two ... . 11) Minimize I2R losses. 12) Balance the load currents. 13) Regulate the system voltages.

0 like 0 dislike

108 views 1 answer

asked Aug 25, 2019 by anonymous

While calculating performance of medium transmission line, what assumptions are made in case of (i) Nominal 'T' Method (ii) Nominal 'TT' Method.

Last answer: (i) Assumptions are made in case of Nominal 'T' Method: a. It is assume that line capacitance is connected at center of transmission line. b. It is assume that half ... assumed that transmission line resistance & reactance per phase is connected in between two half transmission line capacitance

0 like 0 dislike

70 views 1 answer

asked May 8, 2018 by anonymous

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

Last answer: In a transmission line if booster transformers are to be used, preferred location will be At the intermediate point

0 like 0 dislike

208 views 1 answer

asked Jun 18, 2018 by anonymous

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

Last answer: 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

0 like 0 dislike

241 views 1 answer

asked Apr 28, 2018 by anonymous

The sending end and receiving end voltages of a three-phase transmission line are 10 kV/ph and 9.5 kV/ph,

The sending end and receiving end voltages of a three-phase transmission line are 10 kV/ph and 9.5 kV/ph, respectively. If the resistance drop is 150 V/ph and receiving end power factor is 0.8, the sending end power factor is (A) 0.745 lagging (B) 0.775 lagging (C) 0.8 lagging (D) 0.85 lagging

Last answer: Vscos¢s-Vrcos¢r=IR

0 like 0 dislike

2.9k views 2 answers

asked Aug 18, 2017 by anonymous

what is mean by medium transmission line ?

Last answer: The transmission line which have length between 80 km to 250 km is known as medium transmission line.

0 like 0 dislike

82 views 1 answer

asked Aug 18, 2017 by anonymous

what is mean by short transmission line ?

Last answer: The transmission lines which have length less than 80 km is known as short transmission lines.

0 like 0 dislike

89 views 1 answer

asked Aug 18, 2017 by anonymous

what is mean by long transmission line ?

Last answer: The transmission line which have length more than 250 km are known as long transmission lines.

1 like 0 dislike

72 views 1 answer

asked Aug 25, 2019 by anonymous

HVDC transmission line in India:

Last answer: HVDC transmission line in India: S.N . From To Voltage 1 Rihand (U.P) (from 1990) Dadri +- 500 KV (bipolar) 2 Talcher- is the biggest ... (Chandrapur) Western Region 140KV 8 Connecting Southern region(Vizag- Gajuwaka) Eastern Region 140KV

0 like 0 dislike

75 views 1 answer

asked Apr 29, 2018 by anonymous

Series capacitive compensation in EHV transmission line is used to

Last answer: To maintain voltage stability

0 like 0 dislike

340 views 2 answers

asked May 8, 2018 by anonymous

The sag of a transmission line is least affected by

The sag of a transmission line is least affected by (A) Self weight of the conductor. (B) Temperature of the surrounding air. (C) Current through the conductor. (D) Ice deposited on the conductor.

Last answer: The sag of a transmission line is least affected by Current through the conductor.

0 like 0 dislike

102 views 1 answer

asked Apr 30, 2018 by anonymous

For a short transmission line with r/x ratio of is 1.0, the regulation will be zero when the load power factor is

Last answer: For a short transmission line with r/x ratio of is 1.0, the regulation will be zero when the load power factor is 0.707 lead

0 like 0 dislike

130 views 1 answer

asked Apr 29, 2018 by anonymous

A transmission line of 200 km has a certain A, B, C and D parameters. If the length is reduced to 60 km

Last answer: A transmission line of 200 km has a certain A, B, C and D parameters. If the length is reduced to 60 km A increases, B decreases

0 like 0 dislike

91 views 1 answer

asked Apr 26, 2018 by anonymous

Transmission efficiency of a transmission line increases with the

Last answer: Transmission efficiency of a transmission line increases with the increase in power factor and voltage

0 like 0 dislike

67 views 1 answer

asked Mar 20, 2018 by anonymous

The interaction between a transmission line and communication line is minimized by?

Last answer: The interaction between a transmission line and communication line is minimized by transposing transmission as well as communication lines, increasing the height of the transmission line tower, increasing the distance between the two lines.

0 like 0 dislike

117 views 1 answer

asked Mar 20, 2018 by anonymous

When a transmission line is energized, the wave that propagates on it is?

Last answer: When a transmission line is energized, the wave that propagates on it is current wave and voltage wave.

0 like 0 dislike

105 views 1 answer

asked May 8, 2018 by anonymous

Stability of a transmission line can be increased by

Last answer: Stability of a transmission line can be increased by Shunt capacitor, Series capacitor

0 like 0 dislike

266 views 1 answer

asked May 3, 2018 by anonymous

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

Last answer: 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 0.02 P.U

0 like 0 dislike

359 views 1 answer

asked Mar 20, 2018 by anonymous

When a wave propagates on a transmission line, it suffers reflection several times at?

Last answer: When a wave propagates on a transmission line, it suffers reflection several times at sending and other end.

0 like 0 dislike

91 views 1 answer

asked Mar 19, 2018 by anonymous

A transmission line is protected by?

Last answer: A transmission line is protected by distance protection, time graded and current graded overcurrent protection.

0 like 0 dislike

59 views 1 answer

asked May 22, 2020 by anonymous

State the limitations of EHVAC transmission line.

Last answer: Following are the Limitations of EHVAC Transmission: 1. Insulation cost increases as voltage increases 2. Skin effect is more 3. Proximity effect is more. 4. Corona loss increases. 5. Radio ... 18. EHVAC is economical only for bulk amount of power is to be transmitted over long distance.

0 like 0 dislike

82 views 1 answer

asked May 6, 2020 by anonymous

State the impact of inductance and resistance on transmission line performance

Last answer: Impact of inductance on transmission line: 1) It causes IXL drop in transmission line which affects regulation. 2) It is the only parameter which decides power transmission capacity of line i. ... is very small, it causes losses, temperature rise& poor voltage regulation so it cannot be neglected

0 like 0 dislike

84 views 1 answer

asked May 22, 2020 by anonymous

State line parameters of transmission line.

Last answer: Following are the of Line parameters of transmission line: 1. Resistance 2. Inductance 3. Capacitance

0 like 0 dislike

35 views 1 answer

asked Aug 25, 2019 by anonymous

effect of inductance and capacitance on performance of transmission line.

Last answer: Following are the effect on performance of transmission line: 1. Due to inductance (L) voltage drop in transmission line produces. 2. Capacitor (C) draws charging current ... , transmission line efficiency, voltage regulation & also power factor of transmission line gets affected.

1 like 0 dislike

77 views 1 answer

asked Aug 25, 2019 by anonymous

effect of line parameter on performance of transmission line.

Last answer: Following are the effect of line parameter on performance of transmission line: 1. Due to resistance (R), voltage drop in transmission line & copper losses in transmission line ... transmission line efficiency, voltage regulation & also power factor of transmission line gets affected.

0 like 0 dislike

45 views 1 answer

asked Aug 18, 2019 by anonymous

Why is transmission line 11kV, 33kV 66kV Not Is 10kV, 20kV, 30kV ?

Last answer: 10kv plus to compensate losses in olden days 1kv were added and transmitted. Since all equipment used for transmission have a multiple of 11 from olden days, still that is being followed even though the losses are ... voltages, multiples of 11 is eazy for winding ratios.. i.e. 11kv to 33kv is 1:3.

0 like 0 dislike

158 views 3 answers

asked Mar 20, 2018 by anonymous

Which relay is preferred for phase fault on short transmission line?

Last answer: Reactance relay is preferred for phase fault on short transmission line.

0 like 0 dislike

91 views 1 answer

asked Mar 10, 2018 by anonymous

What are the advantages of high voltage transmission?

Last answer: Advantages: 1. As Transmission voltage increases, current decreases. 2. As current decreases, cross section of conductor decreases. 3. As cross section of conductor decreases ... line increases 12. As transmission voltage increases power handling capacity of transmission line increases

0 like 0 dislike

3.1k views 1 answer

asked Mar 8, 2018 by anonymous

What are the types of power losses in inductor?

Last answer: Copper losses, Eddy current loss, and hysteresis loss are the types of power losses in inductor.

0 like 0 dislike

93 views 1 answer

asked Sep 27, 2017 by anonymous

what are the losses in DC machine?

Last answer: Iron loss, copper loss and mechanical losses these are the losses in DC machine.

1 like 0 dislike

78 views 1 answer

asked Mar 10, 2018 by anonymous

What is the difference between a line voltage and low voltage control system?

0 like 0 dislike

99 views 0 answers

asked Mar 10, 2018 by anonymous

What is the difference between line and phase current?

Last answer: The currents flows through phase lines is called line voltage and currents flows from phase to neutral line is called phase current

0 like 0 dislike

90 views 1 answer

asked Mar 10, 2018 by anonymous

What is the difference between line and phase voltage?

Last answer: Line voltage is voltage between two phases R &Y (415 v) while phase voltage is the voltage between one phase and a neutral B & N (240 v).

0 like 0 dislike

130 views 1 answer

asked Mar 20, 2018 by anonymous

Iron losses in a D.C. machine are independent of variations in?

Last answer: Iron losses in a D.C. machine are independent of variations in load.

0 like 0 dislike

111 views 1 answer

asked Mar 19, 2018 by anonymous

In a given transformer for a given applied voltage, losses which remain constant irrespective of load changes are?

Last answer: In a given transformer for a given applied voltage, losses which remain constant irrespective of load changes are hysteresis and eddy current losses.

0 like 0 dislike

103 views 1 answer

asked Apr 28, 2018 by anonymous

In voltage source converter based HVDC transmission system the active power is controlled by changing

In voltage source converter based HVDC transmission system the active power is controlled by changing (A) phase angle of the converter ac input voltage (B) supply frequency of the converter ac input voltage (C) magnitude of the converter ac input voltage (D) DC voltage at the inverter terminals

Last answer: In voltage source converter based HVDC transmission system the active power is controlled by changing phase angle of the converter ac input voltage

0 like 0 dislike

98 views 1 answer

asked Mar 10, 2018 by anonymous

Why high voltage is used in power transmission?

Last answer: The primary reason that power is transmitted at high voltages is to increase efficiency. ... The lower current that accompanies high voltage transmissionreduces resistance in the conductors aselectricity flows ... This means that thin, light-weight wires can beused in long-distance transmission.

0 like 0 dislike

5.2k views 2 answers

asked May 8, 2018 by anonymous

The friction losses in Real Transformers are :

The friction losses in Real Transformers are : (A) 0% (B) 5% (C) 25% (D) 50%

Last answer: A

0 like 0 dislike

2.5k views 2 answers

asked Mar 26, 2018 by anonymous

In DC motor iron losses are occurred in?

Last answer: In DC motor iron losses are occurred in the armature.

0 like 0 dislike

110 views 1 answer

asked Mar 20, 2018 by anonymous

In case of D.C. machines, mechanical losses are primary function of?

Last answer: In case of D.C. machines, mechanical losses are primary function of speed.

0 like 0 dislike

172 views 1 answer

asked Mar 19, 2018 by anonymous

Reduction in core losses and increase in permeability are obtained with transformer employing?

Last answer: Reduction in core losses and increase in permeability are obtained with transformer employing core built-up of laminations of cold rolled grain oriented steel.

0 like 0 dislike

592 views 1 answer

asked Mar 19, 2018 by anonymous

Losses which occur in rotating electric machines and do not occur in transformers are?

Last answer: Friction losses windage losses

0 like 0 dislike

108 views 2 answers

asked Mar 8, 2018 by anonymous

What is the percentage of stray losses in DC machine?

Last answer: Percentage of stray losses in DC machine is about 1 % .

0 like 0 dislike

90 views 1 answer

asked Mar 20, 2018 by anonymous

In a D.C. generator, the iron losses mainly take place in?

Last answer: In a D.C. generator, the iron losses mainly take place in armature rotor.

0 like 0 dislike

239 views 1 answer

asked Mar 20, 2018 by anonymous

The total losses in a well designed D.C. generator of 10 kW will be nearly?

Last answer: The total losses in a well designed D.C. generator of 10 kW will be nearly 500 W.

0 like 0 dislike

97 views 1 answer

asked Mar 18, 2018 by anonymous

In a synchronous motor which losses varies with load?

Last answer: In a synchronous motor, copper losses varies with load.

0 like 0 dislike

62 views 1 answer

asked Aug 25, 2019 by anonymous

requirements or properties of the line supports used in transmission and distribution.

Last answer: Following are requirements or properties of the line supports used in transmission and distribution. 1. High mechanical strength:- It should have high mechanical strength to withstand against - ... . 8. Appearance: It should have good appearance or They must be of pleasing shape

0 like 0 dislike

42 views 1 answer

asked Jan 21, 2020 by Shubham

Why use phase modifiers in case of long transmission line

0 like 0 dislike

80 views 0 answers

asked May 3, 2020 by anonymous

State the losses in secondary distribution system.

Last answer: The losses in secondary distribution system: a) Technical losses: 1. Due to poor voltage 2. Due to unbalance load 3. Due poor quality of transformer & its components 4. Due to poor quality ... of induction type of energy meter. 3. Lack of administration. 4. Energy theft 5. Unmetered supply

0 like 0 dislike

53 views 1 answer

asked Mar 3, 2018 by anonymous

In synchronous motor, does the winding losses vary with load?

Last answer: No, in the synchronous motor the winding losses do not vary with load.

0 like 0 dislike

492 views 1 answer

What are the losses in a transmission line?

Please log in or register to add a comment.

Please log in or register to answer this question.

0 Answers

Related questions