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Mechanical Engineering - Machine Design

Exercise : Machine Design - Section 7
11.
Creep in belt is due to
material of the belt
material of the pulley
uneven extensions and contractions due to varying tension
all of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
12.
The minimum number of teeth on the pinion which will mesh with any gear without interference for 20° full depth involute teeth will be
12
14
18
24
Answer: Option
Explanation:
No answer description is available. Let's discuss.
13.
A bolt of M 24 x 2 means that
the pitch of the thread is 24 mm and depth is 2 mm
cross-sectional area of the threads is 24 mm2
the nominal diameter of bolt is 24 mm and pitch is 2 mm
the effective diameter of bolt is 24 mm and there are 2 threads per cm
Answer: Option
Explanation:
No answer description is available. Let's discuss.
14.
In designing a sleeve coupling, outer diameter of the sleeve is taken as (where d = Diameter of the shaft)
d + 17 mm
2 d + 13 mm
2 d + 20 mm
3.5 d
Answer: Option
Explanation:
No answer description is available. Let's discuss.
15.
In order to ensure self locking in a screw jack, it is essential that helix angle is __________ friction angle.
larger than
smaller than
equal to
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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