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A double start thread has a pitch of 4 mm. The lead of the thread is
- a)8 mm
- b)2 mm
- c)4 mm
- d)None of these
Correct answer is option 'A'. Can you explain this answer?
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Verified Answer
A double start thread has a pitch of 4 mm. The lead of the thread isa)...
Lead=pitch×noofstart=4×2=8mm
Most Upvoted Answer
A double start thread has a pitch of 4 mm. The lead of the thread isa)...
Thread Pitch and Lead
Thread pitch and lead are two important parameters used to describe the characteristics of a threaded fastener. They help determine the distance between threads and the axial movement of the fastener per revolution, respectively.
Thread Pitch
Thread pitch refers to the distance between adjacent threads on a threaded fastener. It is typically measured in millimeters (mm) and can be calculated by dividing the number of threads by the diameter of the fastener. The formula for calculating thread pitch is as follows:
Pitch = 1 / Number of threads
In the given question, the pitch of the double-start thread is mentioned as 4 mm. This means that there are two threads per revolution and the distance between adjacent threads is 4 mm.
Lead
Lead, on the other hand, refers to the axial movement of the fastener per revolution. It is also measured in millimeters (mm) and can be calculated by multiplying the thread pitch by the number of starts (threads) on the fastener. The formula for calculating lead is as follows:
Lead = Pitch x Number of starts
In the given question, since it is mentioned that the thread is double-start, the lead can be calculated as follows:
Lead = 4 mm (Pitch) x 2 (Number of starts) = 8 mm
Answer Explanation
The correct answer to the given question is option A, which states that the lead of the thread is 8 mm. This is because the lead is calculated by multiplying the thread pitch by the number of starts (threads) on the fastener. Since the thread pitch is given as 4 mm and it is mentioned that the thread is double-start (two threads per revolution), the lead is equal to 4 mm x 2 = 8 mm.
Therefore, option A is the correct answer.
Thread pitch and lead are two important parameters used to describe the characteristics of a threaded fastener. They help determine the distance between threads and the axial movement of the fastener per revolution, respectively.
Thread Pitch
Thread pitch refers to the distance between adjacent threads on a threaded fastener. It is typically measured in millimeters (mm) and can be calculated by dividing the number of threads by the diameter of the fastener. The formula for calculating thread pitch is as follows:
Pitch = 1 / Number of threads
In the given question, the pitch of the double-start thread is mentioned as 4 mm. This means that there are two threads per revolution and the distance between adjacent threads is 4 mm.
Lead
Lead, on the other hand, refers to the axial movement of the fastener per revolution. It is also measured in millimeters (mm) and can be calculated by multiplying the thread pitch by the number of starts (threads) on the fastener. The formula for calculating lead is as follows:
Lead = Pitch x Number of starts
In the given question, since it is mentioned that the thread is double-start, the lead can be calculated as follows:
Lead = 4 mm (Pitch) x 2 (Number of starts) = 8 mm
Answer Explanation
The correct answer to the given question is option A, which states that the lead of the thread is 8 mm. This is because the lead is calculated by multiplying the thread pitch by the number of starts (threads) on the fastener. Since the thread pitch is given as 4 mm and it is mentioned that the thread is double-start (two threads per revolution), the lead is equal to 4 mm x 2 = 8 mm.
Therefore, option A is the correct answer.
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A double start thread has a pitch of 4 mm. The lead of the thread isa)8 mmb)2 mmc)4 mmd)None of theseCorrect answer is option 'A'. Can you explain this answer?
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