Defence Exam > Defence Questions > When load on a normally excited synchronous m...
Start Learning for Free
When load on a normally excited synchronous motor is increased, its power factor tends to
- a)approach unity
- b)become increasingly lagging
- c)become increasing leading
- d)remain unchanged
Correct answer is option 'B'. Can you explain this answer?
| FREE This question is part of | Download PDF Attempt this Test |
Verified Answer
When load on a normally excited synchronous motor is increased, its po...
In normal excitation, if load is increased the change in current is greater than the change in power factor and the power factor tends to become increasingly lagging.
Most Upvoted Answer
When load on a normally excited synchronous motor is increased, its po...
Explanation:
As the load on a normally excited synchronous motor is increased, its power factor tends to become increasingly lagging. This is due to the fact that the motor's armature reaction causes a voltage drop that leads the supply voltage, resulting in a phase shift between the voltage and current waveforms. This phase shift causes the power factor to become increasingly lagging as the load on the motor is increased.
Factors that affect power factor:
Importance of power factor:
Maintaining a high power factor is important because it reduces the amount of reactive power that is drawn from the power supply system, which in turn reduces the amount of energy that is wasted. This can result in lower energy bills and improved system efficiency.
As the load on a normally excited synchronous motor is increased, its power factor tends to become increasingly lagging. This is due to the fact that the motor's armature reaction causes a voltage drop that leads the supply voltage, resulting in a phase shift between the voltage and current waveforms. This phase shift causes the power factor to become increasingly lagging as the load on the motor is increased.
Factors that affect power factor:
- Inductive loads, such as motors, which cause a phase shift between voltage and current waveforms
- Capacitive loads, which can lead to a leading power factor
- Resistive loads, which have a power factor of unity
- The impedance of the power supply system, which can affect the power factor
Importance of power factor:
Maintaining a high power factor is important because it reduces the amount of reactive power that is drawn from the power supply system, which in turn reduces the amount of energy that is wasted. This can result in lower energy bills and improved system efficiency.
|
Explore Courses for Defence exam
|
|
Similar Defence Doubts
When load on a normally excited synchronous motor is increased, its power factor tends toa)approach unityb)become increasingly laggingc)become increasing leadingd)remain unchangedCorrect answer is option 'B'. Can you explain this answer?
Question Description
When load on a normally excited synchronous motor is increased, its power factor tends toa)approach unityb)become increasingly laggingc)become increasing leadingd)remain unchangedCorrect answer is option 'B'. Can you explain this answer? for Defence 2024 is part of Defence preparation. The Question and answers have been prepared according to the Defence exam syllabus. Information about When load on a normally excited synchronous motor is increased, its power factor tends toa)approach unityb)become increasingly laggingc)become increasing leadingd)remain unchangedCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for Defence 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for When load on a normally excited synchronous motor is increased, its power factor tends toa)approach unityb)become increasingly laggingc)become increasing leadingd)remain unchangedCorrect answer is option 'B'. Can you explain this answer?.
When load on a normally excited synchronous motor is increased, its power factor tends toa)approach unityb)become increasingly laggingc)become increasing leadingd)remain unchangedCorrect answer is option 'B'. Can you explain this answer? for Defence 2024 is part of Defence preparation. The Question and answers have been prepared according to the Defence exam syllabus. Information about When load on a normally excited synchronous motor is increased, its power factor tends toa)approach unityb)become increasingly laggingc)become increasing leadingd)remain unchangedCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for Defence 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for When load on a normally excited synchronous motor is increased, its power factor tends toa)approach unityb)become increasingly laggingc)become increasing leadingd)remain unchangedCorrect answer is option 'B'. Can you explain this answer?.
Solutions for When load on a normally excited synchronous motor is increased, its power factor tends toa)approach unityb)become increasingly laggingc)become increasing leadingd)remain unchangedCorrect answer is option 'B'. Can you explain this answer? in English & in Hindi are available as part of our courses for Defence.
Download more important topics, notes, lectures and mock test series for Defence Exam by signing up for free.
Here you can find the meaning of When load on a normally excited synchronous motor is increased, its power factor tends toa)approach unityb)become increasingly laggingc)become increasing leadingd)remain unchangedCorrect answer is option 'B'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
When load on a normally excited synchronous motor is increased, its power factor tends toa)approach unityb)become increasingly laggingc)become increasing leadingd)remain unchangedCorrect answer is option 'B'. Can you explain this answer?, a detailed solution for When load on a normally excited synchronous motor is increased, its power factor tends toa)approach unityb)become increasingly laggingc)become increasing leadingd)remain unchangedCorrect answer is option 'B'. Can you explain this answer? has been provided alongside types of When load on a normally excited synchronous motor is increased, its power factor tends toa)approach unityb)become increasingly laggingc)become increasing leadingd)remain unchangedCorrect answer is option 'B'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice When load on a normally excited synchronous motor is increased, its power factor tends toa)approach unityb)become increasingly laggingc)become increasing leadingd)remain unchangedCorrect answer is option 'B'. Can you explain this answer? tests, examples and also practice Defence tests.
|
|
Explore Courses for Defence exam
|
|
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