Electrical Engineering (EE) Exam > Electrical Engineering (EE) Questions > What is the increase in torque expressed as p...
Start Learning for Free
What is the increase in torque expressed as percentage of initial torque, if the current drawnby a dc series motor is increased from 10 A to12 A (neglect saturation )?
- a)21%
- b)25%
- c)41%
- d)44%
Correct answer is option 'D'. Can you explain this answer?
| FREE This question is part of | Download PDF Attempt this Test |
Verified Answer
What is the increase in torque expressed as percentage of initial torq...
Most Upvoted Answer
What is the increase in torque expressed as percentage of initial torq...
Given:
Current drawn by the DC series motor (I1) = 10 A
Current drawn by the DC series motor (I2) = 12 A
To find:
Increase in torque expressed as a percentage of initial torque.
Solution:
To calculate the increase in torque, we need to consider the relationship between torque and current in a DC series motor.
In a DC series motor, the torque is directly proportional to the square of the current. Mathematically, it can be represented as:
T ∝ I^2
Where:
T is the torque
I is the current
Step 1: Calculate the initial torque (T1)
Given that the current drawn by the motor is 10 A, we can calculate the initial torque using the above relationship.
T1 = I1^2 = 10^2 = 100
Step 2: Calculate the final torque (T2)
Given that the current drawn by the motor is increased to 12 A, we can calculate the final torque using the same relationship.
T2 = I2^2 = 12^2 = 144
Step 3: Calculate the increase in torque
The increase in torque (ΔT) can be calculated by subtracting the initial torque from the final torque.
ΔT = T2 - T1 = 144 - 100 = 44
Step 4: Calculate the percentage increase
The percentage increase in torque can be calculated by dividing the increase in torque by the initial torque and multiplying by 100.
Percentage increase = (ΔT / T1) * 100 = (44 / 100) * 100 = 44%
Answer:
The increase in torque expressed as a percentage of the initial torque is 44%. Therefore, the correct option is D.
Current drawn by the DC series motor (I1) = 10 A
Current drawn by the DC series motor (I2) = 12 A
To find:
Increase in torque expressed as a percentage of initial torque.
Solution:
To calculate the increase in torque, we need to consider the relationship between torque and current in a DC series motor.
In a DC series motor, the torque is directly proportional to the square of the current. Mathematically, it can be represented as:
T ∝ I^2
Where:
T is the torque
I is the current
Step 1: Calculate the initial torque (T1)
Given that the current drawn by the motor is 10 A, we can calculate the initial torque using the above relationship.
T1 = I1^2 = 10^2 = 100
Step 2: Calculate the final torque (T2)
Given that the current drawn by the motor is increased to 12 A, we can calculate the final torque using the same relationship.
T2 = I2^2 = 12^2 = 144
Step 3: Calculate the increase in torque
The increase in torque (ΔT) can be calculated by subtracting the initial torque from the final torque.
ΔT = T2 - T1 = 144 - 100 = 44
Step 4: Calculate the percentage increase
The percentage increase in torque can be calculated by dividing the increase in torque by the initial torque and multiplying by 100.
Percentage increase = (ΔT / T1) * 100 = (44 / 100) * 100 = 44%
Answer:
The increase in torque expressed as a percentage of the initial torque is 44%. Therefore, the correct option is D.
Free Test
FREE
| Start Free Test |
Community Answer
What is the increase in torque expressed as percentage of initial torq...
Torque id directly proportion to the square of the current upto saturation ,so torque at 10 amperes is 100 and at 12 ampers is 144 ,so the increase in Torque is about 44 present
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
What is the increase in torque expressed as percentage of initial torque, if the current drawnby a dc series motor is increased from 10 A to12 A (neglect saturation )?a)21%b)25%c)41%d)44%Correct answer is option 'D'. Can you explain this answer?
Question Description
What is the increase in torque expressed as percentage of initial torque, if the current drawnby a dc series motor is increased from 10 A to12 A (neglect saturation )?a)21%b)25%c)41%d)44%Correct answer is option 'D'. 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 What is the increase in torque expressed as percentage of initial torque, if the current drawnby a dc series motor is increased from 10 A to12 A (neglect saturation )?a)21%b)25%c)41%d)44%Correct answer is option 'D'. 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 What is the increase in torque expressed as percentage of initial torque, if the current drawnby a dc series motor is increased from 10 A to12 A (neglect saturation )?a)21%b)25%c)41%d)44%Correct answer is option 'D'. Can you explain this answer?.
What is the increase in torque expressed as percentage of initial torque, if the current drawnby a dc series motor is increased from 10 A to12 A (neglect saturation )?a)21%b)25%c)41%d)44%Correct answer is option 'D'. 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 What is the increase in torque expressed as percentage of initial torque, if the current drawnby a dc series motor is increased from 10 A to12 A (neglect saturation )?a)21%b)25%c)41%d)44%Correct answer is option 'D'. 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 What is the increase in torque expressed as percentage of initial torque, if the current drawnby a dc series motor is increased from 10 A to12 A (neglect saturation )?a)21%b)25%c)41%d)44%Correct answer is option 'D'. Can you explain this answer?.
Solutions for What is the increase in torque expressed as percentage of initial torque, if the current drawnby a dc series motor is increased from 10 A to12 A (neglect saturation )?a)21%b)25%c)41%d)44%Correct answer is option 'D'. 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 What is the increase in torque expressed as percentage of initial torque, if the current drawnby a dc series motor is increased from 10 A to12 A (neglect saturation )?a)21%b)25%c)41%d)44%Correct answer is option 'D'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
What is the increase in torque expressed as percentage of initial torque, if the current drawnby a dc series motor is increased from 10 A to12 A (neglect saturation )?a)21%b)25%c)41%d)44%Correct answer is option 'D'. Can you explain this answer?, a detailed solution for What is the increase in torque expressed as percentage of initial torque, if the current drawnby a dc series motor is increased from 10 A to12 A (neglect saturation )?a)21%b)25%c)41%d)44%Correct answer is option 'D'. Can you explain this answer? has been provided alongside types of What is the increase in torque expressed as percentage of initial torque, if the current drawnby a dc series motor is increased from 10 A to12 A (neglect saturation )?a)21%b)25%c)41%d)44%Correct answer is option 'D'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice What is the increase in torque expressed as percentage of initial torque, if the current drawnby a dc series motor is increased from 10 A to12 A (neglect saturation )?a)21%b)25%c)41%d)44%Correct answer is option 'D'. 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