Can you help by answering this question?

Why is voltage increases before transmission?

21 views
in Electrical Engineering by
In terms of cost, overhead transmission line is better than underground transmission line in the field of 

 (a) Insulation (b) Right of way (c) Visibility (d) None of these 

Your answer

Thanks for your contribution. Feel free to answer this question. Please avoid short answer. Your answer is most welcome. Be genuine.

Upload image or document:

Your name to display (optional):
Privacy: Your email address will only be used for sending these notifications.
Anti-spam verification:
Are you a robot ? (Y = Yes / N = No)
To avoid this verification in future, please log in or register.

Related questions

0 answers 23 views

An open-loop system is better than a closed-loop system in terms of   (a) Accuracy (b) Stability (c) Noise reduction (d) Sensitivity  

asked Apr 10, 2018 in Electrical Engineering by Shimroz123
0 answers 61 views

What is the main drawback of the underground transmission system compared to the overhead transmission system?  (A) Exposure to lightning (B) Heavy initial cost (C) Exposure to atmospheric hazards such as smoke, ice, wind (D) Induction interference between power and communication circuits 

asked Apr 5, 2018 in Electrical Engineering by Shimroz123
1 answer 21 views

Surge impedance of overhead transmission line is normally in the order of (a) 1- 5 ohms (c) 300 - 500 ohms (b) 20 - 30 ohms (d) 300000 - 500000 ohms

asked Apr 25, 2018 in Electrical Engineering by Shimroz123
1 answer 42 views

Why underground service connections are service connections are costly than overhead service connection

asked Sep 18, 2018 in Industry Electrical Systems-I by Shimroz123
0 answers 41 views

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
0 answers 92 views

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
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 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 26 views

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

asked May 22, 2018 in Electric Power Transmission by Shimroz123
1 answer 19 views

The time taken for a surge to travel a 600 km long overhead transmission line is?

asked Mar 27, 2018 in Power system by Shimroz123
1 answer 16 views

An overhead transmission line has a span of 240m between level supports. What is the maximum sag if the conductor weight 727 kg/km and has a breaking strength of 6880 kg? Allow the factor of safety of 2. Neglecting wind and ice loading.

asked Mar 27, 2018 in Power system by Shimroz123
1 answer 17 views

A long overhead transmission line is terminated by its characteristic impedance. Under this operating condition, the ratio of the voltage to the current at different points along the line will?

asked Mar 27, 2018 in Power system by Shimroz123
1 answer 125 views

Why the power factor of semiconverter is better than full converter?

asked Mar 8, 2018 in Unit 6 by Quiz
1 answer 46 views

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 123 views

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
1 answer 11 views

The transformer which transforms unbalanced line to a balanced line is better known as  (A) Impedance transformer (B) Amplifier (C) Balun (D) Oscillator

asked May 12, 2018 in Electrical Engineering by Shimroz123
1 answer 18 views

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 17 views

Digital modulation can withstand channel noise and distortion better than analog schemes (a) as long as the channel noise is within limits (b) for any noise (c) for thermal noise only (d) statement is not true

asked Apr 14, 2018 in Electrical Engineering by Shimroz123
2 answers 361 views

Do you think is DC better than AC to transmit energy?

asked Aug 11, 2018 in Electric Power Transmission by nbattack
1 answer 44 views

An FET is a better chopper than a BJT because it has (A) lower offset voltage (B) higher series ON resistance (C) lower input current (D) higher input impedance

asked Apr 26, 2018 in Electronics Engineering by Shimroz123
1 answer 58 views

why arduino is better than other microcontroller ?

asked Aug 22, 2017 in Arduino by Zeeshan
1 answer 13 views

A transmission line is operating with a Phase shift of 80° between two ends. If the load is suddenly increased A) The phase displacement will increase B) The phase displacement will decrease C) The phase displacement will not change D) The surge impedance will increase

asked May 24, 2018 in Electrical Engineering by Shimroz123
1 answer 27 views

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.

asked May 8, 2018 in Electrical Engineering by Shimroz123
1 answer 43 views

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

asked Apr 30, 2018 in Electrical Engineering by Shimroz123
1 answer 22 views

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

asked Apr 29, 2018 in Electrical Engineering by Shimroz123
1 answer 63 views

The corona loss of a 3-phase transmission line is 100 kW at 60 kV/phase and 25 kW at 50 kV/phase. The disruptive critical voltage is (A) 40 kV (B) 43.6 kV (C) 49.6 kV (D) 50 kV

asked Apr 25, 2018 in Electrical Engineering by Shimroz123
0 answers 15 views

Surge impedance loading (SIL) of power transmission line is the power delivered to a purely (a) inductive (b) capacitive (c) resistive load equal to surge impedance (d) none of these

asked Apr 14, 2018 in Electrical Engineering by Shimroz123
0 answers 18 views

If the transmission line is loaded with leading reactive volt amperes, there will be rise of voltage at the receiving end and this (a) increases (b) decreases (c) remains same with the increase in the length of line (d) none of these

asked Apr 14, 2018 in Electrical Engineering by Shimroz123
1 answer 12 views

Transposition -of the-transmission line is done to reduce : - a) line losses b) capacitive -effect  c) disturbance to nearby communication circuits d) effect of surge voltages induced on the line

asked Apr 14, 2018 in Electrical Engineering by Shimroz123
0 answers 19 views

Equivalent π model is quite suitable for analyzing the performance of transmission line of  A) 50 km length B) 150 km length C) 250 km length D) All of the above lengths

asked Apr 9, 2018 in Electrical Engineering by Shimroz123
0 answers 21 views

What is the most effective way to reduce the cost of power generation in a power station?  (A) By increasing the diversity factor and decreasing the load factor (B) By increasing both the diversity factor and the load factor (C) By decreasing both the diversity factor and the load factor (D) By decreasing the diversity factor and increasing the load factor 

asked Apr 5, 2018 in Electrical Engineering by Shimroz123
0 answers 36 views

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 ? (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 16 views

The effect of corona in high voltage a.c. transmission line is  A) Increased energy loss in the transmission line B) Increased line reactance C) Increased line to line capacitance D) All of the above 

asked Apr 9, 2018 in High voltage engineering by Shimroz123
1 answer 17 views

In a coaxial transmission line, the useful power flows through

asked Apr 23, 2018 in Electrical Engineering by Shimroz123
0 answers 422 views

A shunt motor rotating at 1500 r/min is fed by a 120 V source. The line current is 51 A and the shunt field resistance is 120 ohm. If the armature resistance is 0.1 ohm, calculate the current in the armature.  (A) 1 A (B) 51 A (C) 50 A (D) 12 A 

asked Apr 5, 2018 in Electrical Engineering by Shimroz123
0 answers 28 views

In a dc shunt generator critical field circuit resistance line is the line drawn (A) above the OCC (B) below the OCC (C) tangent to the saturation curve (D) tangent to the linear portion of OCC 

asked Jun 4, 2018 in Electrical Machine by Shimroz123
1 answer 32 views

A voltage of 1000 kV is applied to an overhead line with its receiving end open. If the surge impedance of the line is 500 ohm, then the total surge power in the line ill

asked Mar 27, 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 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 18 views

To increase the visual critical voltage of cporona for an overhead line, one solid phase-conductor is replaced by a "bundle" of four smaller conductors per phase, having an aggregate cross-sectional area equal to that of the solid conductor. If the radius of the solid conductor is 40 mm, then the radius of each of the bundle conductors would be?

asked Mar 27, 2018 in Power system by Shimroz123
1 answer 25 views

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

asked Apr 26, 2018 in Switchgear And Protection by Shimroz123
1 answer 16 views

The load of a consumer is generally measured in terms of : (A) Volts (B) Amperes (C) Ampere hour (D) kW

asked May 8, 2018 in Electrical Engineering by Shimroz123
0 answers 14 views

In case of a power transformer, the no load current in terms of rated current is (1) 10-20% (2) 15-30% (3) 2-6% (4) 30-50% 

asked Apr 11, 2018 in Electrical Engineering by Shimroz123
1 answer 26 views

The power is measured in terms of decibles in case of?

asked Mar 25, 2018 in Electrical Engineering by Shimroz123
1 answer 13 views

A travelling wave of surge resistance, Ro on a transmission line is terminated by a load resistance, RL. If RL > Ro then there is (A) no reflected wave (B) partial reflection of reversal of current only (C) partial reflection of reversal of voltage only (D) reflection of reversal of both current and voltage

asked Apr 25, 2018 in Electrical Engineering by Shimroz123
0 answers 19 views

 VSWR of a transmission line is always (A) Equal to 1 (B) Equal to 0 (C) Less than 1 (D) Greater than 1

asked Apr 14, 2018 in Electrical Engineering by Shimroz123
0 answers 42 views

For transmission line load matching over a range of frequencies, it is best to use a  (a) Balun (b) broadband directional coupler (c) double stub (d) single stub

asked Apr 9, 2018 in Electrical Engineering by Shimroz123
1 answer 12 views

The standing wave ratio of a 75 Ω transmission line used to feed a 300 Ω resistive load will be _____.

asked May 29, 2018 in Electrical Engineering by Shimroz123
0 answers 24 views

The sending and receiving end voltages of a three phase transmission line at 100 MW load are equal at 230 KV. The phase line impedance is j14 ohm. Calculate the maximum steady state power that can be transmitted over the line.  (A) 3778.5 MW (B) 2234.56 MW (C) 1784.19 MW (D) 512.37 MW

asked Apr 5, 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 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

Welcome to electronics2electrical.com here you can ask questions related to electrical, electronics, mechanical, telecommunication, instrumentation, computer, mathematics, physics etc.
Be respectful to all the members. Do not copy and paste the answers from other websites which have copyright content. While asking question give full details about it.

Categories

Most popular tags

power motor dc circuit transformer voltage current used system phase resistance factor synchronous load ac energy induction electric generator series frequency between speed capacitor use electrical meter line difference control type mosfet transmission magnetic plant high single instrument bjt unit source advantages function diode and machine winding field define torque parallel amplifier supply shunt thyristor motors electricity arduino maximum time relay armature problem value on transformers types coil diagram state flow ratio material three formula starting direction theorem method emf operating efficiency digital wave microprocessor test instruments inductance loss measure operation connected signal low applications effect single-phase network temperature working constant losses different law wattmeter measuring compare controlled breaker drive device logic rc full switch flux wire resistivity disadvantages free of materials machines angle force converter conductor transistor gain open protection scr core measurement number bridge principle generators reactance circuits negative the friction iron loop short pole battery conservation steam resistors hysteresis computer using analog lines secondary station gate a rectifier inverter linear induced relays nuclear capacitance basic characteristics design direct work rotor electronics ammeter forces diesel damping rlc connection factors capacitors minimum insulation moving regulation running self systems air fault range main stability quality starter igbt eddy alternator ideal rl average 3-phase plants arc thermal error fuzzy biasing dielectric pressure balanced superposition errors copper rotation feedback impedance measured electronic electrons charge inductive transfer explain start off back curve over solar is three-phase tariff locomotive peak bias zener engineering commutator surge conductors rating universal potentiometer density permanent mechanical transducer capacity memory adc excitation two fuse pure harmonics application semiconductor inductor internal pmmc reaction welding resonance traction permeability breakers rms designed electromagnetic si generation brushes switching capacitive shaded rate 1 distribution resistor methods delta star oscillator reluctance simplification algebra 8085 boolean weston dynamometer insulating strength installation definition fuel heating earth units

8,523 questions

7,121 answers

135 comments

3,090 users

...