All Courses
Explore Courses UPSC Exam UPSC Test Series Free Notes EduRev Infinity Get the App Login Join for Free
Sign in Open App
Electrical Engineering (EE) Exam  >  Electrical Engineering (EE) Questions  >  Phase modifier is normally installed in the c... Start Learning for Free
SaveJoin the Discussion on the App
Phase modifier is normally installed in the case of
  • a)
    short transmission line
  • b)
    medium length lines
  • c)
    long length lines
  • d)
    for all length lines
Correct answer is option 'C'. Can you explain this answer?
FREE This question is part of
Download PDF Attempt Test
Download PDF Attempt this Test
Most Upvoted Answer
Phase modifier is normally installed in the case ofa)short transmissio...


Long length lines require phase modifiers

Long length transmission lines have high impedance which causes voltage drops and power losses. Phase modifiers are installed in long length lines to improve power transfer efficiency and voltage regulation.

Function of phase modifiers

Phase modifiers adjust the effective electrical length of the transmission line to improve the power factor and voltage regulation. They help in reducing the reactive power flow and improving the overall power transfer capability of the line.

Benefits of phase modifiers

- Improved power transfer efficiency
- Better voltage regulation
- Reduced reactive power flow
- Increased transmission line capacity

Usage in medium and short length lines

While phase modifiers are primarily installed in long length lines, they can also be used in medium length lines to optimize power transfer. However, for short transmission lines, the impedance is typically low enough that phase modifiers are not necessary.
Free Test
FREE
Start Free Test
Start Free Test
Community Answer
Phase modifier is normally installed in the case ofa)short transmissio...
A phase modifier, also known as a phase-shifting device or phase-shifting transformer, is typically installed in the case of long-length transmission lines.
Long-length transmission lines can experience various power system issues, including voltage regulation, power flow control, and stability. A phase modifier is used to address these issues by introducing a controlled phase shift in the transmitted power, primarily between two parallel transmission lines.
By adjusting the phase angle, a phase modifier can control the power flow between interconnected systems, improve voltage stability, and enhance system performance. This is particularly important in long-length transmission lines where power flow control and stability become more critical due to the increased line length and associated challenges.
Options A and B, referring to short transmission lines and medium-length lines, are not typically associated with the installation of phase modifiers. Short transmission lines usually do not require phase modifiers as their length is relatively small and their power flow control is typically manageable without additional devices. Medium-length lines may or may not require phase modifiers depending on specific system requirements.
Option D, stating that phase modifiers are installed for all length lines, is not accurate. Phase modifiers are not universally installed for all transmission lines but are specifically utilized for addressing system challenges and optimizing the operation of long-length transmission lines.
Hence, the correct answer is C) long-length lines, as phase modifiers are normally installed in their case.
< Previous Question Next Question >
Explore Courses for Electrical Engineering (EE) exam

Similar Electrical Engineering (EE) Doubts

it depends on the length of the conductor the capacitance of the line is proportional to the length of the transmission line their effect is negligible on the performance of short having a length less than 80 km and low voltage transmission accidents of the transmission line along with the conductances forms the shunted mittens the conductance and the transmission line is because of the leakage over the surface of the conductor considered a line consisting of two conductors and be each of radius are the distance between the conductors being Des shown in the diagram below minus the potential difference between the conductors and via's work QA charge on conductor QB charge on conductor vvab pencil difference between conductor and the Epsilon minus absolute primitivity QA plus QV = 0 so that QA equals QB - equals DBA equals data equals DB equals our substituting these values and voltage equation we get the capacitance between the conductors is cab is referred to as lying to line capacitance if the two conductors are in VR oppositely charge then the potential difference between them is zero then the potential of each conductor is given by one half bath the capacitance between each conductor and point of zero potential and is capacitive CN is called the capacitance to neut or capacitance to ground capacitance cab is the combination of two equal capacity and VN series thus capacitance to neutral is twice the capacitance between the conductors IE CN equals to Cave the absolute primitivity Epsilon is given by Epsilon equals epsilono Epsilon are where epsilano is the permittivity of the free space and Epsilon or is the relative primitivity of the medium prayer capacitance reactants between one conductor and neutral capacitance of the symmetrical three phase line let a balanced system of voltage be applied to a symmetrical three-phase line shown below the phasor diagram of the three phase line with equilateral spacing is shown below take the voltage of conductor to neutral as a reference phaser the potential difference between conductor and we can be written the similarly potential difference between conductors and sea is on adding equations one and two we get also combining equation three and four from equation 6 and 7 the line to neutral capacitance the capacitance of symmetrical three phase line is same as that of the two wire line Related: Capacitance of Transmission Lines?

Top Courses for Electrical Engineering (EE)View all

Top Courses for Electrical Engineering (EE)

Phase modifier is normally installed in the case ofa)short transmission lineb)medium length linesc)long length linesd)for all length linesCorrect answer is option 'C'. Can you explain this answer?
Question Description
Phase modifier is normally installed in the case ofa)short transmission lineb)medium length linesc)long length linesd)for all length linesCorrect answer is option 'C'. Can you explain this answer? for Electrical Engineering (EE) 2024 is part of Electrical Engineering (EE) preparation. The Question and answers have been prepared according to the Electrical Engineering (EE) exam syllabus. Information about Phase modifier is normally installed in the case ofa)short transmission lineb)medium length linesc)long length linesd)for all length linesCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for Electrical Engineering (EE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Phase modifier is normally installed in the case ofa)short transmission lineb)medium length linesc)long length linesd)for all length linesCorrect answer is option 'C'. Can you explain this answer?.
Solutions for Phase modifier is normally installed in the case ofa)short transmission lineb)medium length linesc)long length linesd)for all length linesCorrect answer is option 'C'. Can you explain this answer? in English & in Hindi are available as part of our courses for Electrical Engineering (EE). Download more important topics, notes, lectures and mock test series for Electrical Engineering (EE) Exam by signing up for free.
Here you can find the meaning of Phase modifier is normally installed in the case ofa)short transmission lineb)medium length linesc)long length linesd)for all length linesCorrect answer is option 'C'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of Phase modifier is normally installed in the case ofa)short transmission lineb)medium length linesc)long length linesd)for all length linesCorrect answer is option 'C'. Can you explain this answer?, a detailed solution for Phase modifier is normally installed in the case ofa)short transmission lineb)medium length linesc)long length linesd)for all length linesCorrect answer is option 'C'. Can you explain this answer? has been provided alongside types of Phase modifier is normally installed in the case ofa)short transmission lineb)medium length linesc)long length linesd)for all length linesCorrect answer is option 'C'. Can you explain this answer? theory, EduRev gives you an ample number of questions to practice Phase modifier is normally installed in the case ofa)short transmission lineb)medium length linesc)long length linesd)for all length linesCorrect answer is option 'C'. Can you explain this answer? tests, examples and also practice Electrical Engineering (EE) tests.
Explore Courses for Electrical Engineering (EE) exam

Top Courses for Electrical Engineering (EE)

Explore Courses

Suggested Free Tests

Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
10M+ students study on EduRev
Get App
© EduRev
Education Revolution
Signup to see your scores go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup