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Which of the following is a wrong statement?
- a)Pitch of a screw thread represents the distance from a point on one thread to the corresponding point on the adjacent thread.
- b)The distance which a screw thread advances axially in one rotation of the nut is called lead.
- c)A double start screws has two threads at some phase angle.
- d)Multiple threaded screws increase the load lifting capacity.
Correct answer is option 'D'. Can you explain this answer?
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Verified Answer
Which of the following is a wrong statement?a)Pitch of a screw thread ...
Multi-start threads are used where
(i) large load is required without reducing the cross-section of nut.
(ii) easy screwing is desired as in fountain pens and tooth paste caps. It is used where the use is to impart quick motion in opening and closing without exerting much force.
(i) large load is required without reducing the cross-section of nut.
(ii) easy screwing is desired as in fountain pens and tooth paste caps. It is used where the use is to impart quick motion in opening and closing without exerting much force.
Most Upvoted Answer
Which of the following is a wrong statement?a)Pitch of a screw thread ...
Introduction:
In the field of mechanical engineering, screw threads play a crucial role in various applications. Understanding the concepts related to screw threads is essential to ensure their proper functioning. In this context, let's analyze each statement and identify the incorrect one.
Analysis:
a) Pitch of a screw thread represents the distance from a point on one thread to the corresponding point on the adjacent thread.
This statement is correct. The pitch of a screw thread is defined as the axial distance between two adjacent threads. It represents the linear distance traveled on the screw axis when the nut completes one full rotation.
b) The distance which a screw thread advances axially in one rotation of the nut is called lead.
This statement is also correct. Lead is the distance traveled axially by a screw thread in one complete revolution of the nut. It is equal to the pitch multiplied by the number of thread starts.
c) A double-start screw has two threads at some phase angle.
This statement is correct as well. A double-start screw has two threads that are spaced apart at a specific phase angle. The phase angle determines the alignment of the threads and affects the screw's performance characteristics.
d) Multiple threaded screws increase the load lifting capacity.
This statement is incorrect. Multiple threaded screws do not directly increase the load lifting capacity. The load carrying capacity of a screw thread primarily depends on its pitch, lead, and the mechanical properties of the materials involved. Multiple threads can distribute the load over a larger surface area, but this does not necessarily enhance the lifting capacity. The load capacity is more influenced by factors such as thread engagement, thread profile, friction, and the strength of the screw and nut materials.
Conclusion:
Among the given statements, option 'D' is the incorrect one. Multiple threaded screws do not directly increase the load lifting capacity. It is essential to consider various factors and design considerations to ensure the desired load-carrying capacity in screw thread applications.
In the field of mechanical engineering, screw threads play a crucial role in various applications. Understanding the concepts related to screw threads is essential to ensure their proper functioning. In this context, let's analyze each statement and identify the incorrect one.
Analysis:
a) Pitch of a screw thread represents the distance from a point on one thread to the corresponding point on the adjacent thread.
This statement is correct. The pitch of a screw thread is defined as the axial distance between two adjacent threads. It represents the linear distance traveled on the screw axis when the nut completes one full rotation.
b) The distance which a screw thread advances axially in one rotation of the nut is called lead.
This statement is also correct. Lead is the distance traveled axially by a screw thread in one complete revolution of the nut. It is equal to the pitch multiplied by the number of thread starts.
c) A double-start screw has two threads at some phase angle.
This statement is correct as well. A double-start screw has two threads that are spaced apart at a specific phase angle. The phase angle determines the alignment of the threads and affects the screw's performance characteristics.
d) Multiple threaded screws increase the load lifting capacity.
This statement is incorrect. Multiple threaded screws do not directly increase the load lifting capacity. The load carrying capacity of a screw thread primarily depends on its pitch, lead, and the mechanical properties of the materials involved. Multiple threads can distribute the load over a larger surface area, but this does not necessarily enhance the lifting capacity. The load capacity is more influenced by factors such as thread engagement, thread profile, friction, and the strength of the screw and nut materials.
Conclusion:
Among the given statements, option 'D' is the incorrect one. Multiple threaded screws do not directly increase the load lifting capacity. It is essential to consider various factors and design considerations to ensure the desired load-carrying capacity in screw thread applications.
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Which of the following is a wrong statement?a)Pitch of a screw thread represents the distance from a point on one thread to the corresponding point on the adjacent thread.b)The distance which a screw thread advances axially in one rotation of the nut is called lead.c)A double start screws has two threads at some phase angle.d)Multiple threaded screws increase the load lifting capacity.Correct answer is option 'D'. Can you explain this answer?
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Which of the following is a wrong statement?a)Pitch of a screw thread represents the distance from a point on one thread to the corresponding point on the adjacent thread.b)The distance which a screw thread advances axially in one rotation of the nut is called lead.c)A double start screws has two threads at some phase angle.d)Multiple threaded screws increase the load lifting capacity.Correct answer is option 'D'. 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 Which of the following is a wrong statement?a)Pitch of a screw thread represents the distance from a point on one thread to the corresponding point on the adjacent thread.b)The distance which a screw thread advances axially in one rotation of the nut is called lead.c)A double start screws has two threads at some phase angle.d)Multiple threaded screws increase the load lifting capacity.Correct answer is option 'D'. 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 Which of the following is a wrong statement?a)Pitch of a screw thread represents the distance from a point on one thread to the corresponding point on the adjacent thread.b)The distance which a screw thread advances axially in one rotation of the nut is called lead.c)A double start screws has two threads at some phase angle.d)Multiple threaded screws increase the load lifting capacity.Correct answer is option 'D'. Can you explain this answer?.
Which of the following is a wrong statement?a)Pitch of a screw thread represents the distance from a point on one thread to the corresponding point on the adjacent thread.b)The distance which a screw thread advances axially in one rotation of the nut is called lead.c)A double start screws has two threads at some phase angle.d)Multiple threaded screws increase the load lifting capacity.Correct answer is option 'D'. 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 Which of the following is a wrong statement?a)Pitch of a screw thread represents the distance from a point on one thread to the corresponding point on the adjacent thread.b)The distance which a screw thread advances axially in one rotation of the nut is called lead.c)A double start screws has two threads at some phase angle.d)Multiple threaded screws increase the load lifting capacity.Correct answer is option 'D'. 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 Which of the following is a wrong statement?a)Pitch of a screw thread represents the distance from a point on one thread to the corresponding point on the adjacent thread.b)The distance which a screw thread advances axially in one rotation of the nut is called lead.c)A double start screws has two threads at some phase angle.d)Multiple threaded screws increase the load lifting capacity.Correct answer is option 'D'. Can you explain this answer?.
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