Electrical Engineering (EE) Exam > Electrical Engineering (EE) Questions > How does the synchronous condenser work under...
Start Learning for Free
How does the synchronous condenser work under light loads?
- a)It works as a synchronous motor.
- b)It works as a VAR generator.
- c)It works as a VAR absorber.
- d)It works as a synchronous generator.
Correct answer is option 'B'. Can you explain this answer?
| FREE This question is part of | Download PDF Attempt this Test |
Most Upvoted Answer
How does the synchronous condenser work under light loads?a)It works a...
Synchronous condenser:
- A synchronous motor takes a leading current when over-excited and, therefore, behaves as a capacitor
- An over-excited synchronous motor running on no load is known as synchronous condenser
- When such a machine is connected in parallel with the supply, it takes a leading current which partly neutralises the lagging reactive component of the load
- It works as a VAR generator.
- Thus, the power factor is improved
Advantages:
- By varying the field excitation, the magnitude of current drawn by the motor can be changed by any amount, this helps in achieving stepless control of power factor
- The motor windings have high thermal stability to short circuit currents
- The faults can be removed easily
Disadvantages:
- There are considerable losses in the motor
- The maintenance cost is high
- It produces noise
- Except in sizes above 500 kVA, the cost is greater than that of static capacitors of the same rating
- As a synchronous motor has no self-starting torque, therefore, an auxiliary equipment has to be provided for this purpose
Free Test
FREE
| Start Free Test |
Community Answer
How does the synchronous condenser work under light loads?a)It works a...
Under light loads, a synchronous condenser works as a VAR generator.
Explanation:
A synchronous condenser is a device that is used to supply or absorb reactive power (VAr) to or from an electrical system. It consists of a synchronous motor connected to a power system and operates at a leading or lagging power factor, depending on the requirement of the system.
When the electrical system is under light loads, it usually operates at a high power factor, meaning it requires less reactive power. In this scenario, the synchronous condenser operates as a VAR generator.
Here is a detailed explanation of how a synchronous condenser works under light loads:
1. Definition of a synchronous condenser:
- A synchronous condenser is a synchronous motor that does not drive a mechanical load but is connected to an electrical system to supply or absorb reactive power.
- It consists of a rotor with field windings, which can be excited with direct current to control the reactive power output.
2. Operation as a VAR generator:
- Under light loads, the electrical system operates at a high power factor, which means it requires less reactive power.
- In this situation, the synchronous condenser operates as a VAR generator by supplying reactive power to the system.
- The rotor of the synchronous condenser is excited with direct current, creating a magnetic field.
- As the rotor rotates, it generates a voltage that is in phase with the system voltage.
- By adjusting the excitation current, the synchronous condenser can provide a leading or lagging reactive power output to compensate for the system's power factor.
3. Benefits of operating as a VAR generator:
- By supplying reactive power, the synchronous condenser improves the power factor of the electrical system.
- This helps in reducing line losses, voltage drops, and improving the overall efficiency of the system.
- It also helps in voltage regulation and stabilizing the system during light load conditions.
- Operating the synchronous condenser as a VAR generator ensures a balanced and reliable operation of the electrical system.
In conclusion, under light loads, a synchronous condenser works as a VAR generator by supplying reactive power to the electrical system. This helps in improving the power factor, reducing losses, and maintaining stable operation.
Explanation:
A synchronous condenser is a device that is used to supply or absorb reactive power (VAr) to or from an electrical system. It consists of a synchronous motor connected to a power system and operates at a leading or lagging power factor, depending on the requirement of the system.
When the electrical system is under light loads, it usually operates at a high power factor, meaning it requires less reactive power. In this scenario, the synchronous condenser operates as a VAR generator.
Here is a detailed explanation of how a synchronous condenser works under light loads:
1. Definition of a synchronous condenser:
- A synchronous condenser is a synchronous motor that does not drive a mechanical load but is connected to an electrical system to supply or absorb reactive power.
- It consists of a rotor with field windings, which can be excited with direct current to control the reactive power output.
2. Operation as a VAR generator:
- Under light loads, the electrical system operates at a high power factor, which means it requires less reactive power.
- In this situation, the synchronous condenser operates as a VAR generator by supplying reactive power to the system.
- The rotor of the synchronous condenser is excited with direct current, creating a magnetic field.
- As the rotor rotates, it generates a voltage that is in phase with the system voltage.
- By adjusting the excitation current, the synchronous condenser can provide a leading or lagging reactive power output to compensate for the system's power factor.
3. Benefits of operating as a VAR generator:
- By supplying reactive power, the synchronous condenser improves the power factor of the electrical system.
- This helps in reducing line losses, voltage drops, and improving the overall efficiency of the system.
- It also helps in voltage regulation and stabilizing the system during light load conditions.
- Operating the synchronous condenser as a VAR generator ensures a balanced and reliable operation of the electrical system.
In conclusion, under light loads, a synchronous condenser works as a VAR generator by supplying reactive power to the electrical system. This helps in improving the power factor, reducing losses, and maintaining stable operation.
Attention Electrical Engineering (EE) Students!
To make sure you are not studying endlessly, EduRev has designed Electrical Engineering (EE) study material, with Structured Courses, Videos, & Test Series. Plus get personalized analysis, doubt solving and improvement plans to achieve a great score in Electrical Engineering (EE).
|
Explore Courses for Electrical Engineering (EE) exam
|
|
Similar Electrical Engineering (EE) Doubts
Top Courses for Electrical Engineering (EE)View all
How does the synchronous condenser work under light loads?a)It works as a synchronous motor.b)It works as a VAR generator.c)It works as a VAR absorber.d)It works as a synchronous generator.Correct answer is option 'B'. Can you explain this answer?
Question Description
How does the synchronous condenser work under light loads?a)It works as a synchronous motor.b)It works as a VAR generator.c)It works as a VAR absorber.d)It works as a synchronous generator.Correct answer is option 'B'. 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 How does the synchronous condenser work under light loads?a)It works as a synchronous motor.b)It works as a VAR generator.c)It works as a VAR absorber.d)It works as a synchronous generator.Correct answer is option 'B'. 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 How does the synchronous condenser work under light loads?a)It works as a synchronous motor.b)It works as a VAR generator.c)It works as a VAR absorber.d)It works as a synchronous generator.Correct answer is option 'B'. Can you explain this answer?.
How does the synchronous condenser work under light loads?a)It works as a synchronous motor.b)It works as a VAR generator.c)It works as a VAR absorber.d)It works as a synchronous generator.Correct answer is option 'B'. 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 How does the synchronous condenser work under light loads?a)It works as a synchronous motor.b)It works as a VAR generator.c)It works as a VAR absorber.d)It works as a synchronous generator.Correct answer is option 'B'. 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 How does the synchronous condenser work under light loads?a)It works as a synchronous motor.b)It works as a VAR generator.c)It works as a VAR absorber.d)It works as a synchronous generator.Correct answer is option 'B'. Can you explain this answer?.
Solutions for How does the synchronous condenser work under light loads?a)It works as a synchronous motor.b)It works as a VAR generator.c)It works as a VAR absorber.d)It works as a synchronous generator.Correct answer is option 'B'. 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 How does the synchronous condenser work under light loads?a)It works as a synchronous motor.b)It works as a VAR generator.c)It works as a VAR absorber.d)It works as a synchronous generator.Correct answer is option 'B'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
How does the synchronous condenser work under light loads?a)It works as a synchronous motor.b)It works as a VAR generator.c)It works as a VAR absorber.d)It works as a synchronous generator.Correct answer is option 'B'. Can you explain this answer?, a detailed solution for How does the synchronous condenser work under light loads?a)It works as a synchronous motor.b)It works as a VAR generator.c)It works as a VAR absorber.d)It works as a synchronous generator.Correct answer is option 'B'. Can you explain this answer? has been provided alongside types of How does the synchronous condenser work under light loads?a)It works as a synchronous motor.b)It works as a VAR generator.c)It works as a VAR absorber.d)It works as a synchronous generator.Correct answer is option 'B'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice How does the synchronous condenser work under light loads?a)It works as a synchronous motor.b)It works as a VAR generator.c)It works as a VAR absorber.d)It works as a synchronous generator.Correct answer is option 'B'. Can you explain this answer? tests, examples and also practice Electrical Engineering (EE) tests.
|
|
Explore Courses for Electrical Engineering (EE) exam
|
|
Suggested Free Tests
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
|
© EduRev
|
Education Revolution
|
Follow Us
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup