Electrical Engineering (EE) Exam > Electrical Engineering (EE) Questions > A 3300 V ,delta connected motor has a synchro...
Start Learning for Free
A 3300 V ,delta connected motor has a synchronous reactance per phase of 18 ohm. It operates at a leading power factor of 0.707 when drawing 800kW from the mains. Calculate its excitation e.m.f?
Most Upvoted Answer
A 3300 V ,delta connected motor has a synchronous reactance per phase ...
**Given:**
- Voltage (V) = 3300 V
- Connection = Delta
- Synchronous reactance per phase (Xs) = 18 Ω
- Power factor (pf) = 0.707 (leading)
- Power (P) = 800 kW
**To find:**
- Excitation e.m.f (E)
**Formula:**
- Power (P) = √3 * V * I * pf
- Where, I = current
- E = I * Xs
**Calculation:**
- √3 = 1.732
- I = P / (√3 * V * pf)
- I = 800000 / (1.732 * 3300 * 0.707)
- I = 186.93 A
- E = I * Xs
- E = 186.93 * 18
- E = 3364.74 V
**Answer:**
- Excitation e.m.f (E) = 3364.74 V
**Explanation:**
- The given motor is delta connected, which means the line voltage is equal to the phase voltage.
- The power factor is leading, which means the current leads the voltage.
- The power drawn by the motor is 800 kW, which means the total power drawn by the three phases is 2400 kW.
- Using the power formula, we can calculate the current drawn by the motor.
- Using the excitation formula, we can calculate the excitation e.m.f required for the motor to operate at the given power factor and power.
- Therefore, the excitation e.m.f of the motor is 3364.74 V.
- Voltage (V) = 3300 V
- Connection = Delta
- Synchronous reactance per phase (Xs) = 18 Ω
- Power factor (pf) = 0.707 (leading)
- Power (P) = 800 kW
**To find:**
- Excitation e.m.f (E)
**Formula:**
- Power (P) = √3 * V * I * pf
- Where, I = current
- E = I * Xs
**Calculation:**
- √3 = 1.732
- I = P / (√3 * V * pf)
- I = 800000 / (1.732 * 3300 * 0.707)
- I = 186.93 A
- E = I * Xs
- E = 186.93 * 18
- E = 3364.74 V
**Answer:**
- Excitation e.m.f (E) = 3364.74 V
**Explanation:**
- The given motor is delta connected, which means the line voltage is equal to the phase voltage.
- The power factor is leading, which means the current leads the voltage.
- The power drawn by the motor is 800 kW, which means the total power drawn by the three phases is 2400 kW.
- Using the power formula, we can calculate the current drawn by the motor.
- Using the excitation formula, we can calculate the excitation e.m.f required for the motor to operate at the given power factor and power.
- Therefore, the excitation e.m.f of the motor is 3364.74 V.
Community Answer
A 3300 V ,delta connected motor has a synchronous reactance per phase ...
No help me
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
A 3300 V ,delta connected motor has a synchronous reactance per phase of 18 ohm. It operates at a leading power factor of 0.707 when drawing 800kW from the mains. Calculate its excitation e.m.f?
Question Description
A 3300 V ,delta connected motor has a synchronous reactance per phase of 18 ohm. It operates at a leading power factor of 0.707 when drawing 800kW from the mains. Calculate its excitation e.m.f? 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 A 3300 V ,delta connected motor has a synchronous reactance per phase of 18 ohm. It operates at a leading power factor of 0.707 when drawing 800kW from the mains. Calculate its excitation e.m.f? covers all topics & solutions for Electrical Engineering (EE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A 3300 V ,delta connected motor has a synchronous reactance per phase of 18 ohm. It operates at a leading power factor of 0.707 when drawing 800kW from the mains. Calculate its excitation e.m.f?.
A 3300 V ,delta connected motor has a synchronous reactance per phase of 18 ohm. It operates at a leading power factor of 0.707 when drawing 800kW from the mains. Calculate its excitation e.m.f? 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 A 3300 V ,delta connected motor has a synchronous reactance per phase of 18 ohm. It operates at a leading power factor of 0.707 when drawing 800kW from the mains. Calculate its excitation e.m.f? covers all topics & solutions for Electrical Engineering (EE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A 3300 V ,delta connected motor has a synchronous reactance per phase of 18 ohm. It operates at a leading power factor of 0.707 when drawing 800kW from the mains. Calculate its excitation e.m.f?.
Solutions for A 3300 V ,delta connected motor has a synchronous reactance per phase of 18 ohm. It operates at a leading power factor of 0.707 when drawing 800kW from the mains. Calculate its excitation e.m.f? 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 A 3300 V ,delta connected motor has a synchronous reactance per phase of 18 ohm. It operates at a leading power factor of 0.707 when drawing 800kW from the mains. Calculate its excitation e.m.f? defined & explained in the simplest way possible. Besides giving the explanation of
A 3300 V ,delta connected motor has a synchronous reactance per phase of 18 ohm. It operates at a leading power factor of 0.707 when drawing 800kW from the mains. Calculate its excitation e.m.f?, a detailed solution for A 3300 V ,delta connected motor has a synchronous reactance per phase of 18 ohm. It operates at a leading power factor of 0.707 when drawing 800kW from the mains. Calculate its excitation e.m.f? has been provided alongside types of A 3300 V ,delta connected motor has a synchronous reactance per phase of 18 ohm. It operates at a leading power factor of 0.707 when drawing 800kW from the mains. Calculate its excitation e.m.f? theory, EduRev gives you an
ample number of questions to practice A 3300 V ,delta connected motor has a synchronous reactance per phase of 18 ohm. It operates at a leading power factor of 0.707 when drawing 800kW from the mains. Calculate its excitation e.m.f? 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
|
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup