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Mechanical Engineering - Machine Design

Exercise : Machine Design - Section 7
6.
A thin spherical shell of internal diameter d is subjected to an internal pressure p. If σt, is the tensile stress for the shell material, then thickness of shell is equal to
Answer: Option
Explanation:
No answer description is available. Let's discuss.
7.
A quarter turn belt drive is used when the shafts are arranged at right angles and rotate in one definite direction.
Yes
No
Answer: Option
Explanation:
No answer description is available. Let's discuss.
8.
According to Indian standard specifications, a plain carbon steel designated by 40C8 contains carbon
0.20 to 0.40%
0.35 to 0.45%
0.40 to 0.60%
none of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.
9.
The machine screws are
slotted for a screw driver and are generally used with a nut
similar to tap bolts except that they are of small size and a variety of shapes of heads are available
used to prevent relative motion between the two parts
none of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
10.
A bolt is designed on the basis of __________ with a large factor of safety.
direct tensile stress
direct compressive stress
direct bending stress
direct shear stress
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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