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.
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168 views
1 answer
asked
Mar 20, 2018
by
anonymous

Pure inductive circuit takes power from the A.C. line when?
Last Answer : It takes power when voltage decreases and current increases.
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1.1k views
2 answers
asked
Mar 25, 2018
by
anonymous

Power factor of an inductive circuit is usually improved by connecting capacitor to it in?
Last Answer : Power factor of an inductive circuit is usually improved by connecting capacitor to it in parallel.
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278 views
1 answer
asked
Mar 25, 2018
by
anonymous

The steady state error of the system can be minimized by
Last Answer : The steady state error of the system can be minimized by increasing gain k
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110 views
1 answer
asked
Apr 26, 2018
by
anonymous

How eddy current can be minimized?
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72 views
0 answers
asked
Mar 15, 2018
by
anonymous

A lightening arrester connected between the line and earth in a power system (1) protects the terminal equipment against travelling surges (2) protects the transmission line against direct ... suppresses high frequency oscillations in the line (4) reflects back the travelling wave approaching it
Last Answer : A lightening arrester connected between the line and earth in a power system protects the terminal equipment against travelling surges
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365 views
1 answer
asked
Apr 29, 2018
by
anonymous

The reactive power transfer over a line mainly depends on
Last Answer : The reactive power transfer over a line mainly depends on lVsl- lVRl
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411 views
1 answer
asked
Apr 27, 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
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132 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).
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207 views
1 answer
asked
Mar 10, 2018
by
anonymous

What is the difference between a line voltage and low voltage control system?
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117 views
0 answers
asked
Mar 10, 2018
by
anonymous

Which of the following 3-phase connection of a transformer causes interference with the neighbouring communication lines: (A) Delta-Star (B) Star-Delta (C) Delta-Delta (D) Star-Star
Last Answer : Which of the following 3-phase connection of a transformer causes interference with the neighbouring communication lines: Star-Star
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355 views
1 answer
asked
May 8, 2018
by
anonymous

The rate of rise of current through an inductive coil is maximum?
Last Answer : The rate of rise of current through an inductive coil is maximum at the start of the current flow.
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600 views
1 answer
asked
Mar 25, 2018
by
anonymous

In a pure inductive circuit if the supply frequency is reduced to 1/2, the current will?
Last Answer : In a pure inductive circuit if the supply frequency is reduced to 1/2, the current will be doubled.
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819 views
1 answer
asked
Mar 25, 2018
by
anonymous

In a purely inductive circuit?
Last Answer : In a purely inductive circuit actual power is zero.
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61 views
1 answer
asked
Mar 25, 2018
by
anonymous

In a pure inductive circuit?
Last Answer : Voltage lagging in inductor
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87 views
2 answers
asked
Mar 25, 2018
by
anonymous

Time constant of an inductive circuit?
Last Answer : Time constant of an inductive circuit increases with increase of inductance and decrease of resistance.
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99 views
1 answer
asked
Mar 25, 2018
by
anonymous

Pure inductive circuit?
Last Answer : Pure inductive circuit takes power from the line during some part of the cycle and then returns back to it during other part of the cycle.
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75 views
1 answer
asked
Mar 25, 2018
by
anonymous

Is the power line voltage available in our homes a dc or an ac voltage?
Last Answer : The power line voltage available in our homes is AC. Mobile dwellings are the most commonly DC-supplied homes and even then they tend to include AC supply for heavier loads.
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5.2k views
1 answer
asked
Jun 29, 2019
by
anonymous

For a 500 Hz frequency excitation, a 50 km long power line will be modeled as
Last Answer : For a 500 Hz frequency excitation, a 50 km long power line will be modeled as long line
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2.8k views
1 answer
asked
Apr 29, 2018
by
anonymous

What is a high tension power line?
Last Answer : High tension power line is a high voltage of 115 kv and power line is underground transimissio used by urbun areas
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93 views
2 answers
asked
Mar 10, 2018
by
anonymous

Last Answer : In a single phase power factor meter the phase difference between the currents in the two pressure coils is exactly 90°.
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352 views
1 answer
asked
Mar 21, 2018
by
anonymous

What is the relationship between power and resistance?
Last Answer : P = I2R Where P = power I = Current R = Resistance
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71 views
2 answers
asked
Mar 15, 2018
by
anonymous

What is the relationship between power and current?
Last Answer : P = I2R Where P = power I = Current R = Resistance This the relationship between current and power.
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104 views
2 answers
asked
Mar 15, 2018
by
anonymous

How can I get rid of humming from AUX cable?
Last Answer : answer:You're picking up some combo of 60 Hz AC hum and RFI (radio frequency interference) making its way into the amplifier electronics. Try some of the following: (1) reduce the cable length. Shorter ... are probably not going to work either, & might make things much worse. Hope any of this helps.
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1 view
1 answer
asked
Feb 27
by
anonymous

The surge impedance for over head line is taken as (1) 10-20 ohms (2) 50-60 ohms (3) 100-200 ohms (4) 1000-2000 ohms
Last Answer : The surge impedance for over head line is taken as 100-200 ohms
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108 views
1 answer
asked
May 1, 2018
by
anonymous

lf a travelling-wave travelling along a loss-less overhead line does not result in any reflection after it has reached the far end, then the far end of the line is
Last Answer : lf a travelling-wave travelling along a loss-less overhead line does not result in any reflection after it has reached the far end, then the far end of the line is terminated into a resistance equal to surge impedance of the line
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104 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
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88 views
1 answer
asked
Apr 26, 2018
by
anonymous

Last Answer : Reactance relay is preferred for phase fault on short transmission line.
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110 views
1 answer
asked
Mar 20, 2018
by
anonymous

Last Answer : Impedance relays are used for phase faults on long line.
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82 views
1 answer
asked
Mar 20, 2018
by
anonymous

Last Answer : When a wave propagates on a transmission line, it suffers reflection several times at sending and other end.
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130 views
1 answer
asked
Mar 20, 2018
by
anonymous

Last Answer : When a transmission line is energized, the wave that propagates on it is current wave and voltage wave.
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125 views
1 answer
asked
Mar 20, 2018
by
anonymous

Last Answer : A transmission line is protected by distance protection, time graded and current graded overcurrent protection.
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82 views
1 answer
asked
Mar 19, 2018
by
anonymous

What is the difference between relay and contactor?
Last Answer : Relay have smaller ratings. Contactor is a high rating relay.
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5.1k views
1 answer
asked
May 2, 2018
by
anonymous

ln HRC fuse the time between cut-off and final current zero is called
Last Answer : ln HRC fuse the time between cut-off and final current zero is called the arcing time
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139 views
1 answer
asked
Apr 26, 2018
by
anonymous

Last Answer : Discrimination between main and back up protection is provided by the use of relays which are slow.
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396 views
1 answer
asked
Mar 20, 2018
by
anonymous

Last Answer : A differential relay measures the vector difference between two or more similar electrical quantities.
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159 views
1 answer
asked
Mar 19, 2018
by
anonymous

What is the difference between a switch and a relay?
Last Answer : Switch is simply a mechanical contact mechanism and relay is a electromagnetic switch . Switch can be direct mechanically turn on and off but relay can be operated by energising coil .
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110 views
1 answer
asked
Dec 17, 2017
by
anonymous

Circuits with XL Alone
Last Answer : Circuits with XL Alone X L values in series let two inductive reactances X L 1 and X L 2 are connected in series and has value 50 ohm and 50 ohm respectively. 100 volts A C ... phasor. And it is taken horizontal. Phase angle between inductive current and voltage is same 90 degree.
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82 views
1 answer
asked
May 26, 2019
by
anonymous
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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
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309 views
1 answer
asked
Apr 30, 2018
by
anonymous

For the women: Does a mans chin and jaw line effect whether he's more attractive?
Last Answer : I like a nice strong chin but it’s not a deal-breaker by any means.
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1 view
1 answer
asked
Feb 27
by
anonymous

How to Spool Line Onto a Reel
Last Answer : How to Spool Line Onto a Reel If you think of fishing as a sport or a hobby, you must always make sure that you have efficient fishing tools with you all the time. Your fishing rod must ... you'll always have good quality fishing line and an efficient fishing reel to use during your fishing trips.
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5 views
1 answer

How to Replace Edge Trimmer Line
Last Answer : How to Replace Edge Trimmer Line An edge trimmer line is a very efficient equipment for any avid gardener. This small diameter line, usually made of plastic or other material, cuts various vegetation, ... your edge trimmer lines regularly. It'll save you time and give you a great-looking landcaping.
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9 views
1 answer

How to Repair a Brake Line
Last Answer : How to Repair a Brake Line Vehicles that often travel to colder, up-north states often have their brake lines damaged, because of the salt that melts the ice on the roads. The salt corrodes the car' ... should be done as soon as possible. Otherwise, you might end up in worst brake problems later on.
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4 views
1 answer
asked
May 11, 2021
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.
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318 views
1 answer
asked
May 22, 2020
by
anonymous

List the properties of line insulators in brief
Last Answer : Following are the properties of line insulators: A) Electrical Properties of insulating material:- 1. It should have high resistance. 2. It should have high breakdown voltage. 3. It should have high ... of insulating material:- 1. It should have longer life. 2. It should have low cost
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67 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
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70 views
1 answer
asked
May 22, 2020
by
anonymous

State the meaning of Single line diagram.
Last Answer : Meaning of Single line diagram: The single line diagram of a power system is the network which shows the main connections and arrangement of the system components along with their data ( ... breakers, transformers, capacitors, bus bars, and conductors are shown by standardized schematic symbols.
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76 views
1 answer
asked
May 22, 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
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188 views
1 answer
asked
May 6, 2020
by
anonymous

96 views
0 answers
asked
Jan 21, 2020
by
Shubham

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.
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136 views
1 answer
asked
Aug 25, 2019
by
anonymous
