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Assertion (A): Uniform-strength bolts are used for resisting impact loads.
Reason (R): The area of cross-section of the threaded and unthreaded parts is made equal.
- a)Both A and R are individually true and R is the correct explanation of A
- b)Both A and R are individually true but R is not the correct explanation of A
- c)A is true but R is false
- d)A is false but R is true
Correct answer is option 'C'. Can you explain this answer?
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Assertion (A): Uniform-strength bolts are used for resisting impact lo...
A is true and R is false
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Assertion (A): Uniform-strength bolts are used for resisting impact lo...
Assertion (A): Uniform-strength bolts are used for resisting impact loads.
Reason (R): The area of cross-section of the threaded and unthreaded parts is made equal.
The correct answer is option C: A is true but R is false.
Explanation:
Uniform-strength bolts are designed to have the same strength in both the threaded and unthreaded sections. This allows for a more balanced distribution of load along the length of the bolt, which helps in resisting impact loads. However, the reason given for this assertion is not correct.
The area of cross-section of the threaded and unthreaded parts of a bolt is not necessarily made equal in uniform-strength bolts. In fact, the threaded section of the bolt is usually weaker than the unthreaded section due to the reduction in cross-sectional area caused by the threads. This reduction in cross-sectional area results in a decrease in the strength of the threaded section compared to the unthreaded section.
The main reason for using uniform-strength bolts in applications where impact loads are expected is to prevent stress concentration. Stress concentration occurs when there is a change in cross-sectional area along the length of a component, such as a bolt. This change in cross-sectional area can lead to high localized stresses, which can cause the component to fail under impact loads.
Uniform-strength bolts are designed to have a gradual transition from the unthreaded section to the threaded section, resulting in a more uniform distribution of stress along the length of the bolt. This helps to reduce stress concentration and improve the overall strength of the bolt under impact loads.
In conclusion, while uniform-strength bolts are indeed used for resisting impact loads, the reason given for this assertion is incorrect. The area of cross-section of the threaded and unthreaded parts of a bolt is not made equal in uniform-strength bolts.
Reason (R): The area of cross-section of the threaded and unthreaded parts is made equal.
The correct answer is option C: A is true but R is false.
Explanation:
Uniform-strength bolts are designed to have the same strength in both the threaded and unthreaded sections. This allows for a more balanced distribution of load along the length of the bolt, which helps in resisting impact loads. However, the reason given for this assertion is not correct.
The area of cross-section of the threaded and unthreaded parts of a bolt is not necessarily made equal in uniform-strength bolts. In fact, the threaded section of the bolt is usually weaker than the unthreaded section due to the reduction in cross-sectional area caused by the threads. This reduction in cross-sectional area results in a decrease in the strength of the threaded section compared to the unthreaded section.
The main reason for using uniform-strength bolts in applications where impact loads are expected is to prevent stress concentration. Stress concentration occurs when there is a change in cross-sectional area along the length of a component, such as a bolt. This change in cross-sectional area can lead to high localized stresses, which can cause the component to fail under impact loads.
Uniform-strength bolts are designed to have a gradual transition from the unthreaded section to the threaded section, resulting in a more uniform distribution of stress along the length of the bolt. This helps to reduce stress concentration and improve the overall strength of the bolt under impact loads.
In conclusion, while uniform-strength bolts are indeed used for resisting impact loads, the reason given for this assertion is incorrect. The area of cross-section of the threaded and unthreaded parts of a bolt is not made equal in uniform-strength bolts.
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Assertion (A): Uniform-strength bolts are used for resisting impact loads.Reason (R): The area of cross-section of the threaded and unthreaded parts is made equal.a)Both A and R are individually true and R is the correct explanation of Ab)Both A and R are individually true but R is not the correct explanation of A c)A is true but R is falsed)A is false but R is trueCorrect answer is option 'C'. Can you explain this answer?
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Assertion (A): Uniform-strength bolts are used for resisting impact loads.Reason (R): The area of cross-section of the threaded and unthreaded parts is made equal.a)Both A and R are individually true and R is the correct explanation of Ab)Both A and R are individually true but R is not the correct explanation of A c)A is true but R is falsed)A is false but R is trueCorrect answer is option 'C'. 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 Assertion (A): Uniform-strength bolts are used for resisting impact loads.Reason (R): The area of cross-section of the threaded and unthreaded parts is made equal.a)Both A and R are individually true and R is the correct explanation of Ab)Both A and R are individually true but R is not the correct explanation of A c)A is true but R is falsed)A is false but R is trueCorrect answer is option 'C'. 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 Assertion (A): Uniform-strength bolts are used for resisting impact loads.Reason (R): The area of cross-section of the threaded and unthreaded parts is made equal.a)Both A and R are individually true and R is the correct explanation of Ab)Both A and R are individually true but R is not the correct explanation of A c)A is true but R is falsed)A is false but R is trueCorrect answer is option 'C'. Can you explain this answer?.
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ample number of questions to practice Assertion (A): Uniform-strength bolts are used for resisting impact loads.Reason (R): The area of cross-section of the threaded and unthreaded parts is made equal.a)Both A and R are individually true and R is the correct explanation of Ab)Both A and R are individually true but R is not the correct explanation of A c)A is true but R is falsed)A is false but R is trueCorrect answer is option 'C'. Can you explain this answer? tests, examples and also practice Mechanical Engineering tests.
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