Mechanical Engineering Exam > Mechanical Engineering Questions > A resistance spot welding of two 1.55 mm thic...
Start Learning for Free
A resistance spot welding of two 1.55 mm thick metal sheets is performed using welding current of 10000 A for 0.25 second. The contact resistance at the interface of the metal sheets is 0.0001Ω. The volume of weld nugget formed after welding is 70 mm3. Considering the heat required to melt unit volume of metal is 12 J/mm3, the thermal efficiency of the welding process is_________ % (round off to one decimal place).
Correct answer is '33.6'. Can you explain this answer?
| FREE This question is part of | Download PDF Attempt this Test |
Most Upvoted Answer
A resistance spot welding of two 1.55 mm thick metal sheets is perform...
Given :
t = 1.55 mm ,
I = 10000 A
T = 0.25 sec ,
R = 0.0001Ω
V = 70 mm3
Specific heat required for melting = 12 J/mm3
= 33.6%
t = 1.55 mm ,
I = 10000 A
T = 0.25 sec ,
R = 0.0001Ω
V = 70 mm3
Specific heat required for melting = 12 J/mm3
= 33.6%
Free Test
FREE
| Start Free Test |
Community Answer
A resistance spot welding of two 1.55 mm thick metal sheets is perform...
To calculate the heat generated during the resistance spot welding, we can use the formula:
Q = I^2 * R * t
Where:
Q = heat generated (in Joules)
I = welding current (in Amperes)
R = contact resistance (in Ohms)
t = time (in seconds)
Plugging in the given values:
I = 10000 A
R = 0.0001 Ohms
t = 0.25 s
Q = (10000^2) * 0.0001 * 0.25
Q = 2500 Joules
Therefore, the heat generated during the resistance spot welding is 2500 Joules.
Q = I^2 * R * t
Where:
Q = heat generated (in Joules)
I = welding current (in Amperes)
R = contact resistance (in Ohms)
t = time (in seconds)
Plugging in the given values:
I = 10000 A
R = 0.0001 Ohms
t = 0.25 s
Q = (10000^2) * 0.0001 * 0.25
Q = 2500 Joules
Therefore, the heat generated during the resistance spot welding is 2500 Joules.
Attention Mechanical Engineering Students!
To make sure you are not studying endlessly, EduRev has designed Mechanical Engineering study material, with Structured Courses, Videos, & Test Series. Plus get personalized analysis, doubt solving and improvement plans to achieve a great score in Mechanical Engineering.
|
Explore Courses for Mechanical Engineering exam
|
|
Similar Mechanical Engineering Doubts
Top Courses for Mechanical EngineeringView all
A resistance spot welding of two 1.55 mm thick metal sheets is performed using welding current of 10000 A for 0.25 second. The contact resistance at the interface of the metal sheets is 0.0001Ω. The volume of weld nugget formed after welding is 70 mm3. Considering the heat required to melt unit volume of metal is 12 J/mm3, the thermal efficiency of the welding process is_________ % (round off to one decimal place).Correct answer is '33.6'. Can you explain this answer?
Question Description
A resistance spot welding of two 1.55 mm thick metal sheets is performed using welding current of 10000 A for 0.25 second. The contact resistance at the interface of the metal sheets is 0.0001Ω. The volume of weld nugget formed after welding is 70 mm3. Considering the heat required to melt unit volume of metal is 12 J/mm3, the thermal efficiency of the welding process is_________ % (round off to one decimal place).Correct answer is '33.6'. Can you explain this answer? for Mechanical Engineering 2024 is part of Mechanical Engineering preparation. The Question and answers have been prepared according to the Mechanical Engineering exam syllabus. Information about A resistance spot welding of two 1.55 mm thick metal sheets is performed using welding current of 10000 A for 0.25 second. The contact resistance at the interface of the metal sheets is 0.0001Ω. The volume of weld nugget formed after welding is 70 mm3. Considering the heat required to melt unit volume of metal is 12 J/mm3, the thermal efficiency of the welding process is_________ % (round off to one decimal place).Correct answer is '33.6'. Can you explain this answer? covers all topics & solutions for Mechanical Engineering 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A resistance spot welding of two 1.55 mm thick metal sheets is performed using welding current of 10000 A for 0.25 second. The contact resistance at the interface of the metal sheets is 0.0001Ω. The volume of weld nugget formed after welding is 70 mm3. Considering the heat required to melt unit volume of metal is 12 J/mm3, the thermal efficiency of the welding process is_________ % (round off to one decimal place).Correct answer is '33.6'. Can you explain this answer?.
A resistance spot welding of two 1.55 mm thick metal sheets is performed using welding current of 10000 A for 0.25 second. The contact resistance at the interface of the metal sheets is 0.0001Ω. The volume of weld nugget formed after welding is 70 mm3. Considering the heat required to melt unit volume of metal is 12 J/mm3, the thermal efficiency of the welding process is_________ % (round off to one decimal place).Correct answer is '33.6'. Can you explain this answer? for Mechanical Engineering 2024 is part of Mechanical Engineering preparation. The Question and answers have been prepared according to the Mechanical Engineering exam syllabus. Information about A resistance spot welding of two 1.55 mm thick metal sheets is performed using welding current of 10000 A for 0.25 second. The contact resistance at the interface of the metal sheets is 0.0001Ω. The volume of weld nugget formed after welding is 70 mm3. Considering the heat required to melt unit volume of metal is 12 J/mm3, the thermal efficiency of the welding process is_________ % (round off to one decimal place).Correct answer is '33.6'. Can you explain this answer? covers all topics & solutions for Mechanical Engineering 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A resistance spot welding of two 1.55 mm thick metal sheets is performed using welding current of 10000 A for 0.25 second. The contact resistance at the interface of the metal sheets is 0.0001Ω. The volume of weld nugget formed after welding is 70 mm3. Considering the heat required to melt unit volume of metal is 12 J/mm3, the thermal efficiency of the welding process is_________ % (round off to one decimal place).Correct answer is '33.6'. Can you explain this answer?.
Solutions for A resistance spot welding of two 1.55 mm thick metal sheets is performed using welding current of 10000 A for 0.25 second. The contact resistance at the interface of the metal sheets is 0.0001Ω. The volume of weld nugget formed after welding is 70 mm3. Considering the heat required to melt unit volume of metal is 12 J/mm3, the thermal efficiency of the welding process is_________ % (round off to one decimal place).Correct answer is '33.6'. Can you explain this answer? in English & in Hindi are available as part of our courses for Mechanical Engineering.
Download more important topics, notes, lectures and mock test series for Mechanical Engineering Exam by signing up for free.
Here you can find the meaning of A resistance spot welding of two 1.55 mm thick metal sheets is performed using welding current of 10000 A for 0.25 second. The contact resistance at the interface of the metal sheets is 0.0001Ω. The volume of weld nugget formed after welding is 70 mm3. Considering the heat required to melt unit volume of metal is 12 J/mm3, the thermal efficiency of the welding process is_________ % (round off to one decimal place).Correct answer is '33.6'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
A resistance spot welding of two 1.55 mm thick metal sheets is performed using welding current of 10000 A for 0.25 second. The contact resistance at the interface of the metal sheets is 0.0001Ω. The volume of weld nugget formed after welding is 70 mm3. Considering the heat required to melt unit volume of metal is 12 J/mm3, the thermal efficiency of the welding process is_________ % (round off to one decimal place).Correct answer is '33.6'. Can you explain this answer?, a detailed solution for A resistance spot welding of two 1.55 mm thick metal sheets is performed using welding current of 10000 A for 0.25 second. The contact resistance at the interface of the metal sheets is 0.0001Ω. The volume of weld nugget formed after welding is 70 mm3. Considering the heat required to melt unit volume of metal is 12 J/mm3, the thermal efficiency of the welding process is_________ % (round off to one decimal place).Correct answer is '33.6'. Can you explain this answer? has been provided alongside types of A resistance spot welding of two 1.55 mm thick metal sheets is performed using welding current of 10000 A for 0.25 second. The contact resistance at the interface of the metal sheets is 0.0001Ω. The volume of weld nugget formed after welding is 70 mm3. Considering the heat required to melt unit volume of metal is 12 J/mm3, the thermal efficiency of the welding process is_________ % (round off to one decimal place).Correct answer is '33.6'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice A resistance spot welding of two 1.55 mm thick metal sheets is performed using welding current of 10000 A for 0.25 second. The contact resistance at the interface of the metal sheets is 0.0001Ω. The volume of weld nugget formed after welding is 70 mm3. Considering the heat required to melt unit volume of metal is 12 J/mm3, the thermal efficiency of the welding process is_________ % (round off to one decimal place).Correct answer is '33.6'. Can you explain this answer? tests, examples and also practice Mechanical Engineering tests.
|
|
Explore Courses for Mechanical Engineering 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