Mechanical Engineering Exam > Mechanical Engineering Questions > Two shafts are connected by means of a flange...
Start Learning for Free
Two shafts are connected by means of a flange coupling to transmit torque of 25 N-m. The flanges of the coupling are fastened by four bolts of the same material at a radius of 30 mm. What is the size of bolts if the allowable shear stress for the botl material is 30 MPa?
- a)M 4
- b)M 8
- c)M 12
- d)M 16
Correct answer is option 'A'. Can you explain this answer?
| FREE This question is part of | Download PDF Attempt this Test |
Verified Answer
Two shafts are connected by means of a flange coupling to transmit tor...
∴
Most Upvoted Answer
Two shafts are connected by means of a flange coupling to transmit tor...
Given data:
Torque transmitted (T) = 25 N-m
Radius (r) = 30 mm
Allowable shear stress (τ) = 30 MPa
To find: Size of bolts required
Solution:
1. Calculation of shear stress:
The torque transmitted by the coupling is resisted by the bolts. The shear stress developed in the bolts can be calculated using the formula:
τ = T/(2A)
where A is the area of the bolt cross-section.
In this case, there are four bolts, so the total area of cross-section is:
A = 4 × π/4 × d^2/4
where d is the diameter of the bolt.
Substituting the given values, we get:
τ = 25/(2 × 4 × π/4 × 0.03^2) = 17.48 MPa
The allowable shear stress is given as 30 MPa. Therefore, the bolts are safe for the given torque.
2. Selection of bolt size:
The size of the bolt can be selected based on the shear area required to withstand the given torque. The shear area (As) can be calculated using the formula:
As = T/(τ × d)
where d is the diameter of the bolt.
Substituting the given values, we get:
As = 25/(30 × 10^6 × d) = 0.83 × 10^-6 m^2
The standard sizes of bolts are available in the market. From the available sizes, the closest size which fulfills the shear area requirement can be selected. The closest size is M4 bolt, which has a shear area of 0.785 × 10^-6 m^2.
Therefore, the required bolt size is M4.
Answer: Option A (M4)
Torque transmitted (T) = 25 N-m
Radius (r) = 30 mm
Allowable shear stress (τ) = 30 MPa
To find: Size of bolts required
Solution:
1. Calculation of shear stress:
The torque transmitted by the coupling is resisted by the bolts. The shear stress developed in the bolts can be calculated using the formula:
τ = T/(2A)
where A is the area of the bolt cross-section.
In this case, there are four bolts, so the total area of cross-section is:
A = 4 × π/4 × d^2/4
where d is the diameter of the bolt.
Substituting the given values, we get:
τ = 25/(2 × 4 × π/4 × 0.03^2) = 17.48 MPa
The allowable shear stress is given as 30 MPa. Therefore, the bolts are safe for the given torque.
2. Selection of bolt size:
The size of the bolt can be selected based on the shear area required to withstand the given torque. The shear area (As) can be calculated using the formula:
As = T/(τ × d)
where d is the diameter of the bolt.
Substituting the given values, we get:
As = 25/(30 × 10^6 × d) = 0.83 × 10^-6 m^2
The standard sizes of bolts are available in the market. From the available sizes, the closest size which fulfills the shear area requirement can be selected. The closest size is M4 bolt, which has a shear area of 0.785 × 10^-6 m^2.
Therefore, the required bolt size is M4.
Answer: Option A (M4)
Free Test
FREE
| Start Free Test |
Community Answer
Two shafts are connected by means of a flange coupling to transmit tor...
Two pulleys, one 450 mm diameter and the other 200 mm diameter, on parallel shafts
1.95 m apart are connected by a crossed belt. Find the length of the belt required and
the angle of contact between the belt and each pulley.
What power can be transmitted by the belt when the larger pulley rotates at 200 rev/min, if the maximum permissible tension in the belt is 1 KN, and the coefficient of friction between the belt and pulley is 0.25?
1.95 m apart are connected by a crossed belt. Find the length of the belt required and
the angle of contact between the belt and each pulley.
What power can be transmitted by the belt when the larger pulley rotates at 200 rev/min, if the maximum permissible tension in the belt is 1 KN, and the coefficient of friction between the belt and pulley is 0.25?
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
Two shafts are connected by means of a flange coupling to transmit torque of 25 N-m. The flanges of the coupling are fastened by four bolts of the same material at a radius of 30 mm. What is the size of bolts if the allowable shear stress for the botl material is 30 MPa?a)M 4b)M 8c)M 12d)M 16Correct answer is option 'A'. Can you explain this answer?
Question Description
Two shafts are connected by means of a flange coupling to transmit torque of 25 N-m. The flanges of the coupling are fastened by four bolts of the same material at a radius of 30 mm. What is the size of bolts if the allowable shear stress for the botl material is 30 MPa?a)M 4b)M 8c)M 12d)M 16Correct answer is option 'A'. 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 Two shafts are connected by means of a flange coupling to transmit torque of 25 N-m. The flanges of the coupling are fastened by four bolts of the same material at a radius of 30 mm. What is the size of bolts if the allowable shear stress for the botl material is 30 MPa?a)M 4b)M 8c)M 12d)M 16Correct answer is option 'A'. 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 Two shafts are connected by means of a flange coupling to transmit torque of 25 N-m. The flanges of the coupling are fastened by four bolts of the same material at a radius of 30 mm. What is the size of bolts if the allowable shear stress for the botl material is 30 MPa?a)M 4b)M 8c)M 12d)M 16Correct answer is option 'A'. Can you explain this answer?.
Two shafts are connected by means of a flange coupling to transmit torque of 25 N-m. The flanges of the coupling are fastened by four bolts of the same material at a radius of 30 mm. What is the size of bolts if the allowable shear stress for the botl material is 30 MPa?a)M 4b)M 8c)M 12d)M 16Correct answer is option 'A'. 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 Two shafts are connected by means of a flange coupling to transmit torque of 25 N-m. The flanges of the coupling are fastened by four bolts of the same material at a radius of 30 mm. What is the size of bolts if the allowable shear stress for the botl material is 30 MPa?a)M 4b)M 8c)M 12d)M 16Correct answer is option 'A'. 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 Two shafts are connected by means of a flange coupling to transmit torque of 25 N-m. The flanges of the coupling are fastened by four bolts of the same material at a radius of 30 mm. What is the size of bolts if the allowable shear stress for the botl material is 30 MPa?a)M 4b)M 8c)M 12d)M 16Correct answer is option 'A'. Can you explain this answer?.
Solutions for Two shafts are connected by means of a flange coupling to transmit torque of 25 N-m. The flanges of the coupling are fastened by four bolts of the same material at a radius of 30 mm. What is the size of bolts if the allowable shear stress for the botl material is 30 MPa?a)M 4b)M 8c)M 12d)M 16Correct answer is option 'A'. 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 Two shafts are connected by means of a flange coupling to transmit torque of 25 N-m. The flanges of the coupling are fastened by four bolts of the same material at a radius of 30 mm. What is the size of bolts if the allowable shear stress for the botl material is 30 MPa?a)M 4b)M 8c)M 12d)M 16Correct answer is option 'A'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
Two shafts are connected by means of a flange coupling to transmit torque of 25 N-m. The flanges of the coupling are fastened by four bolts of the same material at a radius of 30 mm. What is the size of bolts if the allowable shear stress for the botl material is 30 MPa?a)M 4b)M 8c)M 12d)M 16Correct answer is option 'A'. Can you explain this answer?, a detailed solution for Two shafts are connected by means of a flange coupling to transmit torque of 25 N-m. The flanges of the coupling are fastened by four bolts of the same material at a radius of 30 mm. What is the size of bolts if the allowable shear stress for the botl material is 30 MPa?a)M 4b)M 8c)M 12d)M 16Correct answer is option 'A'. Can you explain this answer? has been provided alongside types of Two shafts are connected by means of a flange coupling to transmit torque of 25 N-m. The flanges of the coupling are fastened by four bolts of the same material at a radius of 30 mm. What is the size of bolts if the allowable shear stress for the botl material is 30 MPa?a)M 4b)M 8c)M 12d)M 16Correct answer is option 'A'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice Two shafts are connected by means of a flange coupling to transmit torque of 25 N-m. The flanges of the coupling are fastened by four bolts of the same material at a radius of 30 mm. What is the size of bolts if the allowable shear stress for the botl material is 30 MPa?a)M 4b)M 8c)M 12d)M 16Correct answer is option 'A'. 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