Bundled conductors are employed to improve the

Bundled conductors are employed to improve the. 

A) Appearance of the transmission line B) Mechanical stability of the line C) Current carrying capacity of the line D) Corona performance of the line
by
edited

2 Answers

Answer :

Bundled conductors are employed to improve the. Corona performance of the line

by
edited

Answer :

B
by

Related questions

Bundled conductors are mainly used in high voltage overhead transmission lines to

Description : 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

Last Answer : Bundled conductors are mainly used in high voltage overhead transmission lines to Reduce corona 

The skin effect in conductors is due to non uniform distribution of current in it and major portion of current is

Description : The skin effect in conductors is due to non uniform distribution of current in it and major portion of current is near the _______ of conductor.  (1) Surface (2) Center (3) Complete cross section area (4) Axis

Last Answer : The skin effect in conductors is due to non uniform distribution of current in it and major portion of current is near the Surface of conductor. 

Corona loss can be reduced by the use of hollow conductors because?

Description : Corona loss can be reduced by the use of hollow conductors because?

Last Answer : Corona loss can be reduced by the use of hollow conductors because of better ventilation in the conductor.

Whenever the conductors are dead-ended of there is a change in the ...

Description : Whenever the conductors are dead-ended of there is a change in the direction of a transmission line, the insulator. used are of the?

Last Answer : Whenever the conductors are dead-ended of there is a change in the direction of a transmission line, the insulator. used are of the strain type.

A three phase 50 Hz line consists of three conductors each of diameter 21 mm,...

Description : A three phase 50 Hz line consists of three conductors each of diameter 21 mm, The spacing between the conductors all follows:A - B = 3m, B - C = 5m, C - A = 3.6mIf the line operates at 132 k V, the reactive voltampere generatd by the line per km is?

Last Answer : A three phase 50 Hz line consists of three conductors each of diameter 21 mm, The spacing between the conductors all follows:A - B = 3m, B - C = 5m, C - A = 3.6mIf the line operates at 132 k V, the reactive voltampere generated by the line per km is  51.70 kVAr.

"Expanded ACSR" are conductors composed of ?

Description :  "Expanded ACSR" are conductors composed of ?

Last Answer :  "Expanded ACSR" are conductors composed of a fillter between the inner steel and the outer aluminium strands to increase the overall diameter of the conductor.

A three phase over head transmission line has its conductors horizontally...

Description : A three phase overhead transmission line has its conductors horizontally spaced with spacing between adjacent conductors equal to 'd'. if now the conductors of the line are rearranged to form and the equilateral triangle of sides equal to 'd' then?

Last Answer : A three-phase overhead transmission line has its conductors horizontally spaced with spacing between adjacent conductors equal to 'd'. if now the conductors of the line are rearranged to form and an equilateral triangle of sides equal to 'd' then average capacitance and inductance will increase.

When bundle conductors are used in place of single conductors, ...

Description : When bundle conductors are used in place of single conductors, the effective inductance and capacitance will respectively

Last Answer : When bundle conductors are used in place of single conductors, the effective inductance and capacitance will respectively decrease and remain unaffected.

For equilateral spacing of conductors of an untrasposed 3-phase line, we have

Description : For equilateral spacing of conductors of an untrasposed 3-phase line, we have?

Last Answer : For equilateral spacing of conductors of an untrasposed 3-phase line, we have balanced receiving end voltage and communication interference.

For a single phase overhead line having solid copper conductors of ...

Description : For a single phase overhead line having solid copper conductors of diameter 1 cm, spaced 60 cm between centers, the inductance in mH/km is?

Last Answer : For a single phase overhead line having solid copper conductors of diameter 1 cm, spaced 60 cm between centers, the inductance in mH/km is 0.05 + 0.2 ln (6010.5).

Reflector mirrors employed for exploiting solar energy are called the

Description : Reflector mirrors employed for exploiting solar energy are called the  (1) Mantle (2) Heliostats (3) Diffusers (4) Ponds

Last Answer : Reflector mirrors employed for exploiting solar energy are called the Heliostats

Cylindrical windings using circular conductors, employed in transformers, are (a) single layered (b) double layered (c) multi-layered (d) none of the above

Description : Cylindrical windings using circular conductors, employed in transformers, are (a) single layered (b) double layered (c) multi-layered (d) none of the above

Last Answer : (c) multi-layered

what is the best bundled internet?

Description : what is the best bundled internet?

Last Answer : Where I live (the metro St. Louis area). It seems to be the Charter internet, Cable, and telephone bundle. But it also vary's on where you live, no matter what city. You may find that ... on how you define "best". Is best the cheapest, fastest, most reliable or some combination of those things?

Is cpt code 14040 bundled with 67971?

Description : Is cpt code 14040 bundled with 67971?

Last Answer : Need answer

Is cpt code 14040 bundled with67971?

Description : Is cpt code 14040 bundled with67971?

Last Answer : Need answer

Is cpt code 14060 bundled with 67971?

Description : Is cpt code 14060 bundled with 67971?

Last Answer : Need answer

I bundled with ATT. I am unable to retrieve my mail.?

Description : I bundled with ATT. I am unable to retrieve my mail.?

Last Answer : Why Can't I Retrieve my mail from ATt?Why Can't I retrieve my E-mail from Att. I was told I have 37messages

What cable providers in NYC provide the cheapest monthly bundled service (phone, internet, cable TV) rates in NYC?

Description : What cable providers in NYC provide the cheapest monthly bundled service (phone, internet, cable TV) rates in NYC?

Last Answer : Verizon and Comcast are cable providers in NYC provide the cheapest monthly bundled service (phone, internet, cable TV) rates in NYC. Read more at verizon.com Check with Verizon as well as RCN for bundling on phone, cable and internet. Verizon may have the lowest prices!

Does Comcast offer a bundled services package for new customers?

Description : Does Comcast offer a bundled services package for new customers?

Last Answer : Comcast offers many plans of services including to new customers deals that they will allow you to have more.

What are the pros/cons of bundled internet and phone service?

Description : What are the pros/cons of bundled internet and phone service?

Last Answer : The bundle packages provide the company with an incentive to give you lower prices. For example with Time Warner, they offer a digital phone and broadband internet service bundle, if you utilize both of ... of the additional costs to have these each individually at a total of 60 dollars a month.

It is always economical to improve the power factor of an electric installation to

Description : It is always economical to improve the power factor of an electric installation to (a) zero (b) unity (c) a little less than unity (d) a little more than unity 

Last Answer : To  a  little  less  than  unity.

In order to improve the power factor ___ device is employed in the substation a) Synchronous condenser b) Synchronous reactor c) Series Capacitors d) None of the above

Description : In order to improve the power factor ___ device is employed in the substation a) Synchronous condenser b) Synchronous reactor c) Series Capacitors d) None of the above

Last Answer : Ans: A

The inertia constant of a 100 MVA, 11 kV water wheel generator is 4. The energy stored in the rotor at the

Description : The inertia constant of a 100 MVA, 11 kV water wheel generator is 4. The energy stored in the rotor at the synchronous speed is: A) 400 Mega Joule B) 400 Kilo Joule C) 25 Mega Joule D) 25 Kilo Joule

Last Answer : The inertia constant of a 100 MVA, 11 kV water wheel generator is 4. The energy stored in the rotor at the synchronous speed is: 400 Mega Joule

Which statement out of the following statements about ‘corona’ is incorrect?

Description : Which statement out of the following statements about ‘corona’ is incorrect? A) Corona gives rise to radio interference B) Corona results in loss of power in transmission C) Corona discharge can be observed as red luminescence D) Corona is always accompanied by a hissing voice

Last Answer : Which statement out of the following statements about ‘corona’ is incorrect? A) Corona gives rise to radio interference B) Corona results in loss of power in transmission C) Corona discharge can be observed as red luminescence D) Corona is always accompanied by a hissing voice

A DC reactor is connected in series with each pole of a converter station in order to:

Description : A DC reactor is connected in series with each pole of a converter station in order to: A) prevent commutation failures in the inverter B) supply reactive power to the converter C) improve system stability D) increase the power transfer capability

Last Answer : A DC reactor is connected in series with each pole of a converter station in order to:  prevent commutation failures in the inverter

The melting point of carbon is:

Description : The melting point of carbon is: A) 1800 degree Centigrade B) 2200 degree Centigrade C) 3500 degree Centigrade D) 5500 degree Centigrade

Last Answer : The melting point of carbon is:  3500 degree Centigrade 

A power system is subjected to a fault which makes the zero sequence component of current equal to zero

Description :  A power system is subjected to a fault which makes the zero sequence component of current equal to zero. The nature of fault current is: A) Double line to ground fault B) Line to line fault C) Line to ground fault D) Three-phase to ground fault

Last Answer :  A power system is subjected to a fault which makes the zero sequence component of current equal to zero. The nature of fault current is: Line to line fault

The zero sequence current of a generator for line to ground fault is j 2.4 p.u. The current through the neutral

Description : The zero sequence current of a generator for line to ground fault is j 2.4 p.u. The current through the neutral during the fault is (a) j 0.8 p.u (b) j 2.4 p.u. (c) j 0.24 p.u. (d) j 7.2 p.u. 

Last Answer : j7.2

A 20-MVA, 6.6-kV, 3-phase alternator is connected to a 3-phase transmission line. The per unit

Description : A 20-MVA, 6.6-kV, 3-phase alternator is connected to a 3-phase transmission line. The per unit positive-sequence, negative-sequence and zero-sequence impedances of the alternator are j0.1, j0.1 and j0.04 respectively. The neutral of ... the fault is  (A) 513.8 V (B) 889.9 V (C) 1112.0 V (D) 642.2 V

Last Answer : A 20-MVA, 6.6-kV, 3-phase alternator is connected to a 3-phase transmission line. The per unit positive-sequence, negative-sequence and zero-sequence impedances of the alternator are j0.1, ... line. The voltage of the alternator neutral with respect to ground during the fault is 642.2 V

A 3-phase 11 kV generator feeds power to a constant power unity power factor load of 100 MW through a

Description : A 3-phase 11 kV generator feeds power to a constant power unity power factor load of 100 MW through a 3-phase transmission line. The line-to line voltage at the terminals of the machine is maintained constant at 11 kV. The per ... 11 kV is  (A) 100 MVAR (B) 10.1 MVAR (C) -100 MVAR (D) -10.1 MVAR

Last Answer : A 3-phase 11 kV generator feeds power to a constant power unity power factor load of 100 MW through a 3-phase transmission line. The line-to line voltage at the terminals of the machine is maintained ... load to increase the line-to-line voltage at the load terminals to 11 kV is -10.1 MVAR

Choose two appropriate auxiliary components of a HVDC transmission system from the following P. D.C line

Description : 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

Last Answer : 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

A hydraulic turbine having rated speed of 250 rpm is connected to a synchronous generator. In order to

Description : A hydraulic turbine having rated speed of 250 rpm is connected to a synchronous generator. In order to produce power at 50 Hz, the number of poles required in the generator are (A) 6 (B) 12 (C) 16 (D) 24

Last Answer : A hydraulic turbine having rated speed of 250 rpm is connected to a synchronous generator. In order to produce power at 50 Hz, the number of poles required in the generator are 24

A 50 Hz, 4-pole, 500 MVA, 22 kV turbo-generator is delivering rated megavolt amperes at 0.8 power factor.

Description : A 50 Hz, 4-pole, 500 MVA, 22 kV turbo-generator is delivering rated megavolt amperes at 0.8 power factor. Suddenly a fault occurs reducing in electric power output by 40%. Neglect losses and assume constant power input to the ... the time of fault will be  (A) 1.528 (B) 1.018 (C) 0.848 (D) 0.509

Last Answer : A 50 Hz, 4-pole, 500 MVA, 22 kV turbo-generator is delivering rated megavolt amperes at 0.8 power factor. Suddenly a fault occurs reducing in electric power output by 40%. Neglect losses and assume ... the shaft. The accelerating torque in the generator in MNm at the time of fault will be 1.018 

A 800 kV transmission line is having per phase line inductance of 1.1 mH/km and per phase line capacitance

Description : A 800 kV transmission line is having per phase line inductance of 1.1 mH/km and per phase line capacitance of 11.68 nF/km. Ignoring the length of the line, its ideal power transfer capability in MW is (A) 1204 MW (B) 1504 MW (C) 2085 MW (D) 2606 MW

Last Answer : A 800 kV transmission line is having per phase line inductance of 1.1 mH/km and per phase line capacitance of 11.68 nF/km. Ignoring the length of the line, its ideal power transfer capability in MW is 2085 MW

The transmission line distance protection relay having the property of being inherently directional is

Description : The transmission line distance protection relay having the property of being inherently directional is (A) impedance relay (B) MHO relay (C) OHM relay (D) reactance relay

Last Answer : The transmission line distance protection relay having the property of being inherently directional is MHO relay

For harnessing low variable water heads, the suitable hydraulic turbine with high percentage of reaction and

Description : For harnessing low variable water heads, the suitable hydraulic turbine with high percentage of reaction and runner adjustable vanes is  (A) Kaplan (B) Francis (C) Pelton (D) Impeller

Last Answer : For harnessing low variable water heads, the suitable hydraulic turbine with high percentage of reaction and runner adjustable vanes is Kaplan 

In the thermal power plants, the pressure in the working fluid cycle is developed by

Description : In the thermal power plants, the pressure in the working fluid cycle is developed by  (A) condenser (B) super heater (C) feed water pump (D) turbine

Last Answer : In the thermal power plants, the pressure in the working fluid cycle is developed by feed water pump 

At an industrial sub-station with a 4 MW load, a capacitor of 2 MVAR is installed to maintain the load power

Description : At an industrial sub-station with a 4 MW load, a capacitor of 2 MVAR is installed to maintain the load power factor at 0.97 lagging. If the capacitor goes out of service, the load power factor becomes (A) 0.85 (B) 1.00 (C) 0.80 lag (D) 0.90 lag

Last Answer : At an industrial sub-station with a 4 MW load, a capacitor of 2 MVAR is installed to maintain the load power factor at 0.97 lagging. If the capacitor goes out of service, the load power factor becomes  0.80 lag

High Voltage DC (HVDC) transmission is mainly used for

Description : High Voltage DC (HVDC) transmission is mainly used for  (A) bulk power transmission over very long distances (C) inter-connecting two systems with same nominal frequency (C) eliminating reactive power requirement in the operation (D) minimizing harmonics at the converter stations

Last Answer : High Voltage DC (HVDC) transmission is mainly used for bulk power transmission over very long distances 

An 800 kV transmission line has a maximum power transfer capacity of P. If it is operated at 400 kV with the

Description : An 800 kV transmission line has a maximum power transfer capacity of P. If it is operated at 400 kV with the series reactance unchanged, the new maximum power transfer capacity is approximately (A) P (B) 2P (C) P / 2 (D) P / 4

Last Answer : An 800 kV transmission line has a maximum power transfer capacity of P. If it is operated at 400 kV with the series reactance unchanged, the new maximum power transfer capacity is approximately P / 4

The p.u. parameter for a 500 MVA machine on its own base are: inertia, M = 20 p.u. ; reactance, X = 2 p.u. The

Description : The p.u. parameter for a 500 MVA machine on its own base are: inertia, M = 20 p.u. ; reactance, X = 2 p.u. The p.u. values of inertia and reactance on 100 MVA common base, respectively, are (A) 4, 0.4 (B) 100, 10 (C) 4, 10 (D) 100, 0.4

Last Answer : The p.u. parameter for a 500 MVA machine on its own base are: inertia, M = 20 p.u. ; reactance, X = 2 p.u. The p.u. values of inertia and reactance on 100 MVA common base, respectively, are 100, 0.4

A generator is connected through a 20 MVA, 13.8/138 kV step down transformer, to a transmission line.

Description : A generator is connected through a 20 MVA, 13.8/138 kV step down transformer, to a transmission line. At the receiving end of the line a load is supplied through a step down transformer of 10 MVA, 138/69 kV rating. A 0.72 ... load (in per unit) in generator will be (A) 36 (B) 1.44 (C) 0.72 (D) 0.18

Last Answer : A generator is connected through a 20 MVA, 13.8/138 kV step down transformer, to a transmission line. At the receiving end of the line a load is supplied through a step down transformer of 10 MVA, 138/ ... MVA and 69 kV in load circuit, the value of the load (in per unit) in generator will be 36 

An HVDC link consist of rectifier, inverter transmission line and other equipments. Which one of the following

Description : An HVDC link consist of rectifier, inverter transmission line and other equipments. Which one of the following is true for this link ?  (A) The transmission line produces/ supplies ... ) Both the converters (rectifier and inverter) consume reactive power from the respective connected AC systems

Last Answer : An HVDC link consist of rectifier, inverter transmission line and other equipments. Which one of the following is true for this link ?  (A) The transmission line produces/ supplies ... ) Both the converters (rectifier and inverter) consume reactive power from the respective connected AC systems

A loss less transmission line having Surge Impedance Loading (SIL) of 2280 MW is provided with a uniformly

Description : A loss less transmission line having Surge Impedance Loading (SIL) of 2280 MW is provided with a uniformly distributed series capacitive compensation of 30%. Then, SIL of the compensated transmission line will be (A) 1835 MW (B) 2280 MW (C) 2725 MW (D) 3257 MW

Last Answer : A loss less transmission line having Surge Impedance Loading (SIL) of 2280 MW is provided with a uniformly distributed series capacitive compensation of 30%. Then, SIL of the compensated transmission line will be 2280 MW

A three-phase, 33 kV oil circuit breaker is rated 1200 A, 2000 MVA, 3 s. The symmetrical breaking current is

Description : A three-phase, 33 kV oil circuit breaker is rated 1200 A, 2000 MVA, 3 s. The symmetrical breaking current is  (A) 1200 A (B) 3600 A (C) 35 kA (D) 104.8 kA

Last Answer : A three-phase, 33 kV oil circuit breaker is rated 1200 A, 2000 MVA, 3 s. The symmetrical breaking current is 35 kA 

For enhancing the power transmission in along EHV transmission line, the most preferred method is to

Description : 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 ... (C) Series capacitive compensator in the line (D) Shunt capacitive compensator at the sending end

Last Answer : For enhancing the power transmission in along EHV transmission line, the most preferred method is to connect a Series capacitive compensator in the line

A negative sequence relay is commonly used to protect

Description : A negative sequence relay is commonly used to protect  (A) an alternator (B) an transformer (C) a transmission line (D) a bus bar

Last Answer : A negative sequence relay is commonly used to protect  an alternator

A cylinder rotor generator delivers 0.5 pu power in the steady-state to an infinite bus through a transmission

Description : A cylinder rotor generator delivers 0.5 pu power in the steady-state to an infinite bus through a transmission line of reactance 0.5 pu. The generator no-load voltage is 1.5 pu and the infinite bus voltage is 1 pu. The ... fault at the generator terminal is  (A) 53.5 (B) 60.2 (C) 70.8 (D) 79.6

Last Answer : A cylinder rotor generator delivers 0.5 pu power in the steady-state to an infinite bus through a transmission line of reactance 0.5 pu. The generator no-load voltage is 1.5 pu and the ... clearing angle, in degrees, for a three-phase dead short circuit fault at the generator terminal is 79.6

If the reference bus is changed in two load flow runs with same system data and power obtained for

Description : If the reference bus is changed in two load flow runs with same system data and power obtained for reference bus taken as specified P and Q in the latter run, the system losses  A) Will be ... C) As well as complex bus voltage will changed D) As well as complex bus voltage will be unchanged

Last Answer : If the reference bus is changed in two load flow runs with same system data and power obtained for reference bus taken as specified P and Q in the latter run, the system losses Will be unchanged but complex bus voltages will change

Which material is used in controlling chain reaction in a nuclear reactor?

Description : Which material is used in controlling chain reaction in a nuclear reactor?  A) Thorium B) Uranium C) Boron D)Beryllium

Last Answer : Which material is used in controlling chain reaction in a nuclear reactor?  A) Thorium B) Uranium C) Boron D)Beryllium