An 11kV, three phase transmission line has a resistance of 2 ohm and reactance of 4 ohm per phase. The efficiency of the line when supplying a load of 4MW at 0.8 lagging power factor is nearly . . Select one O a 97.8 % Ob. 90.6 % Oc.95.4 % O d 992 %

An 11kV, three phase transmission line has a resistance of 2 ohm and reactance of 4 ohm per phase. The efficiency of the line when supplying a load of 4MW at 0.8 lagging power factor is nearly . . Select one O a 97.8 % Ob. 90.6 % Oc.95.4 % O d 992 %

Power System Analysis and Design (MindTap Course List)

6th Edition

ISBN:9781305632134

Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Chapter5: Transmission Lines: Steady-state Operation

Section: Chapter Questions

Problem 5.7P

See similar textbooks

Related questions

Q: A load of 10,000 kW at a power factor of 0-8 lagging is supplied by a 3-phase line whose voltage has…

A: We have a 3-phase load which supplied by a 3-phase line whose voltage is to be maintained at 33 KV…

Q: A 3-phase, 50 Hz, 45 km long overhead line supplies 450 kW at 22 kV, 0.9 p.f. lagging. The line…

A: Inductive reactance =2×π×f×L current =total power3×Vl×power factor sending end voltage=receiving…

Q: A single phase transmission line is delivering 430 kVA load at 10kV. Its resistance is 6 Q and…

Q: A single phase transmission line is delivering 410 kVA load at 11 kV. Its resistance is 7 Q and…

Q: The figure displays a three-phase delta-connected motor load which is connected to a line voltage of…

A: Dear student as per our guidelines we are supposed to solve only one question in which it should be…

Q: A load of 120 MW at a power factor of 0.75 lagging can be delivered by a 3-phase transmission line.…

A: single phase power =three phase power3. power in 3 phase power =3×Line voltage×line current×power…

Q: 2. For the 3-phase, 3 wire system below. Compute for the line currents, total real power, total…

A: The given circuit diagram is shown below: It is given that: Vab=200 ∠0° VVbc=200 ∠240° VVca=200…

Q: A single phase transmission line is delivering 490 kVA load at 12 kV. Its resistance is 6 N and…

A: This question belongs to power system . It is based on the concept of sending end and receiving end…

Q: A single phase transmission line is delivering 450 kVA load at 13 kV. Its resistance is 7 Q and…

Q: A 3-phase, 50 Hz, 55 km long overhead line supplies 550 kW at 22 kV, 0.6 p.f. lagging. The line…

Q: 5. A 3-phase line 3 km long delivers 3000 kW at a p.f. 0-8 lagging to a load. The resistance and…

A: As per Bartleby guidelines we are allowed to solve only one question, please asks the rest again.…

Q: Consider a transmission line of characteristic impedance 50 ohms. Let it be terminated at one end by…

A: Given: Characteristic impedance, Z0=50 Ω Load impedance, ZL=j50 Ω

Q: The resistance and reactance of the single-phase 60HZ transmission line conductors are 8.2 ohm and…

Q: A load of 130 MW at a power factor of 0.9 lagging can be delivered by a 3-phase transmission line.…

A: Given P3ϕ=130 MWcosϕ=0.9 lagVr=33 KVLosses in the transmission line=7% of power delivered…

Q: A load of 130 MW at a power factor of 0.9 lagging can be delivered by a 3-phase transmission line.…

Q: The voltage regulation of a transmission line is negative for lagging power factor. Select one: O…

A: Given Voltage regulator is negative for lagging load True or false

Q: A load of 125 MW at a power factor of 0.8 lagging can be delivered by a 3-phase transmission line.…

A: A 3 phase -Load 125MW, power factor 0.8 logging, Receiving end voltage VR = 36kV. Loss in…

Q: A single phase short-transmission line is feeding a load of 12 kW at a 0.8 lagging power factor. The…

A: Given values are - PL=12kWcosϕ=0.8R=5ohmX=10ohmVL=440∠0oV

Q: A load of 120 MW at a power factor of 0.8 lagging can be delivered by a 3-phase transmission line.…

A: Conventional sources of energy are the form of energy which is traditionally used for generation of…

Q: A load of 120 MW at a power factor of 0.65 lagging can be delivered by a 3-phase transmission line.…

Q: A 3-phase, 60 Hz, 25 km long overhead line supplies 425 kW at 22 kV, 0.6 p.f. lagging. The line…

A: inductive reactance =2×π×f×L. current=power3×voltage×power factor. sending end voltage=receiving end…

Q: A load of 140 MW at a power factor of 0.8 lagging can be delivered by a 3-phase transmission line.…

A: given total power delivered is 140 mw so total losses are 0.065*140 =9.1 mw

Q: A 3-phase, 60 Hz, 30 km long overhead line supplies 400 kW at 11 kV, 0.9 p.f. lagging. The line…

A: Short transmission line An effective length less than 80km is known as a short transmission line. It…

Q: For a single phase ac voltage controller/chopper, which is designed by using thyristors, with the…

A: In this question we need to find a average power absorbed by the load

Q: A 3-phase, 50 Hz, 35 km long overhead line supplies 500 kW at 22 kV, 0.8 p.f. lagging. The line…

A: We are authorized to answer three sub-parts at a time, since you have not mentioned which part you…

Q: A load of 135 MW at a power factor of 0.65 lagging can be delivered by a 3-phase transmission line.…

A: Below are the answers calculated for the above given data

Q: For the 3-phase, 3 wire system below. Compute for the line currents, total real power, total…

A: Power factor: The power factor tells how much active power is utilized by the circuit from the…

Q: Q4 Calculate the three-phase voltage drop if the ac resistance is 3 Q/2km and an ac reactance of…

A: In the Star Connection, the 3 winding's similar endpoints are connected to a common point known as…

Q: Q1 (a) An industrial unit operating at rated power can be represented by a balanc- delta connected…

A: In this question we will write about line voltage phase.....

Q: A load of 135 MW at a power factor of 0.65 lagging can be delivered by a 3-phase transmission line.…

Q: A 3-phase, 60 Hz, 30 km long overhead line supplies 525 kW at 22 kV, 0.9 p.f. lagging. The line…

A: Hello. Since your question has multiple sub-parts, we will solve first three sub-parts for you. If…

Q: For the 3-phase, 3 wire system below. Compute for the line currents, total real power, total…

A: Given: Consider the given circuit:

Q: A 3-phase, 60 Hz, 30 km long overhead line supplies 475 kWw at 11 kV, 0.6 p.f. lagging. The line…

A: In this question we will find sending end voltage, regulation , efficiency...

Q: EXAMPLE : Estimate the distance over which a load of 15000 KW at p.f=0.8 lagging can be delivered by…

A: The solution can be achieved as follows.

Q: low voltage systems In the circuit given below, single-phase powers connected to the single-phase…

A: V= 220 at angle 0° Load 1 is capacitor and load 2 is inductor Then

Q: A load of 140 MW at a power factor of 0.6 lagging can be delivered by a 3-phase transmission line.…

A: Given 3-phase transmission line Load PL=140 MWPower factor PF=0.6 lagReceiving end voltage VR=36…

Q: A load of 135 MW at a power factor of 0.65 lagging can be delivered by a 3-phase transmission line.…

Q: A 3-phase, 60 Hz, 25 km long overhead line supplies 425 kW at 22 kV, 0.6 p.f. lagging. The line…

A: inductive reactance=2×π×f×inductance. current=power delivered3×voltage×power factor.…

Q: A load of 120 MW at a power factor of 0.8 lagging can be delivered by a 3-phase transmission line.…

Q: Q3: A 3-phase 400kV overhead transmission line supply 100MW load of 0.75 power factor lagging, the…

A: Given, Active power at receiving end, PR=100MWpower factor, cosϕ=0.75 D=0.98∠3B=110∠75

Q: A load of 125 MW at a power factor of 0.9 lagging can be delivered by a 3-phase transmission line.…

A: Given a three phase transmission line with load 125 MW ,0.9 pf, 57 kv The loss in the transmission…

Q: Vs 3Ω j4 N Vc 3Ω j4 N VR Is Ic IR 80 Ω j 5-106 siemens j60 N

A: Given that the receiving end end voltage is 154 kV. Therefore, the two port network parameters A and…

Q: Alternating Current is preferred over Direct Current in Power System, Why?

A: e) Alternating Current is preferred over Direct Current in Power System Why ?

Q: A load of 120 MW at a power factor of 0.6 lagging can be delivered by a 3-phase transmission line.…

A: Since we only answer up to 3 sub-parts, we’ll answer the first 3. Please resubmit the question and…

Q: A 3-phase, 60 Hz, 45 km long overhead line supplies 500 kW at 11 kV, 0.6 p.f. lagging. The line…

Q: A 3-phase, 60 Hz, 55 km long overhead line supplies 525 kW at 22 kV, 0.7 p.f. lagging. The line…

Q: A load of 145 MW at a power factor of 0.65 lagging can be delivered by a 3-phase transmission line.…

A: single phase power =3 phase power 3. phase voltage=line voltage3. per phase resistance=power loss…

Q: A load of 145 MW at a power factor of 0.8 lagging can be delivered by a 3-phase transmission line.…

Q: Assuming the voltage at the utility bus is 13.5 kV and the PV plant supplies 4.8 MW of power at 0.95…

Concept explainers

Single Phase AC Circuit

Alternating Current (AC) is a type of electric power in which the electric current changes, both in magnitude and direction, at regular intervals. This AC Circuits can deliver power in either a Single Phase system or a Three Phase system.

Question

An 11kV, three phase transmission line has a resistance of 2 ohm and reactance of 4 ohm per phase. The efficiency of the line
when supplying a load of 4MW at 0.8 lagging power factor is nearly ..
Select one:
O a. 97.8 %
O b. 90.6 %
OC.95.4 %
O d.99.2 %

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Introduction

VIEW

Solution

VIEW

Step by step

Solved in 2 steps with 1 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Analysis of Single Phase and Three Phase System

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, electrical-engineering and related others by exploring similar questions and additional content below.

Similar questions

A balanced -connected impedance load with (12+j9) per phase is supplied by a balanced three-phase 60-Hz,208-V source, (a) Calculate the line current, the total real and reactive power absorbed by the load, the load power factor, and the apparent load power, (b) Sketch a phasor diagram showing the line currents, the line-to-line source voltages, and the -load currents. Use Vab as the reference.
The three-phase source line-to-neutral voltages are given by Ean=100,Ebh=10+240, and Ecn=10240volts. Is the source balanced? (a) Yes (b) No
A three-phase line, which has an impedance of (2+j4) per phase, feeds two balanced three-phase loads that are connected in parallel. One of the loads is Y-connected with an impedance of (30+j40) per phase, and the other is -connected with an impedance of (60j45) per phase. The line is energized at the sending end from a 60-Hz, three-phase, balanced voltage source of 1203V (rms. line-to-line). Determine (a) the current, real power. and reactive power delivered by the sending-end source: (b) the line-to-line voltage at the load: (C) the current per phase in each load: and (d) the total three-phase real and reactive powers absorbed by each load and by the line. Check that the total three- phase complex power delivered by the source equals the total three-phase power absorbed by the line and loads.
Using a test equipment, Vmax was found to be 5V while Vmin is 1V. The distance between voltage maximas is 14 cm and the first maximum was found to be 7 cm from the load. What is the load impedance if the characteristic impedance of the line is 75 ohms?
a short three phase transmission line connected to 33kv 50 hertz generating station at starting and is required to supply a load of 10 MW at pointed start lagging power factor at 30 KV addresses in that is the minimum transmission efficiency is to be determined96% estimate the per face value of resistance and inductance of a line
S.1) The serial impedance per phase of a three-phase 45 km energy transmission line is 2 + j4 / phase. A load with a power factor of cos2 = 0.8 forward is fed from the end of the line. Since the line voltage at the beginning and end of the line of the energy transmission line is wanted to be kept constant at 115 kV, a) Active and reactive powers drawn from the beginning and end of the line, b) Calculating the power consumed along the energy transmission line and the efficiency of the line. S.2) Line constants of an energy transmission line are given as A = D = 0.8746 + j0, B = 0 + j128.34, C = j0.0018316 S. At the beginning of the line, it is desired to write 1920 MW active power and 600 MVAr reactive power lines under 7650kV line voltage. According to this business, a) Calculate the line end magnitudes (U2, I2 and P2). b) What value does the end voltage take when the load fed from the end of the line is deactivated? S.3) The length of a phased energy transmission line with a…
Find the following: the power drawn by the 100ohm variable resistor If the variable resistor is set to 200-ohms, instead of 100-ohms, What is the power drawn by the 200-ohms resistor? total current of the system Is the circuit inductive, capacitive, or neither (resistive)? NOTE: Polar form for Voltage & Current. Rectangular form for Impedance
low voltage systems In the circuit given below, single-phase powers connected to the single-phase network are given. If the effective value of the applied voltage is 220 V, the amplitude of the current drawn from the network(I) how many A?(Note: - sign indicates phasor state) A)142,85 B)119,34 C)129,16 D)137,86
In the figure, the circuit is given as VRS =√3 . 60V and Zy = 6 + j8. Find the value of C to be connected in order to make the power drawn from the system in a phase 1, to make the load current 1, and to make cos(φ) 1.
circuits A balanced 3-phase Y-connected source has using positive phase sequence, ?an = 390∠30˚ ?. Find the complex expression of voltage Eab.
In the power system whose single line diagram is shown below, the line cross-section is 95 mm2, the intrinsic conductivity coefficient is 34 m/ohm.mm2 and the inductive reactance of the line is 0.4 ohm/km. According to these values; Find the location and value of the largest voltage drop.
A balanced 3-phase Y-connected source has using positive phase sequence, ?an = 390∠30˚ ?. Find the complex expression of voltage Eab. Circuits Problem 1