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Mechanical Engineering - Machine Design

Exercise : Machine Design - Section 3
21.
Euler's formula for a mild steel column is not valid if the slenderness ratio is
60
90
100
120
Answer: Option
Explanation:
No answer description is available. Let's discuss.
22.
The standard length of the shaft is
5 m
6 m
7 m
all of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.
23.
According to I.B.R., when the thickness of boiler shell (t) is greater than 8 mm, then the diameter of rivet hole (d) is obtained by
equating tearing resistance of the plate to the shearing resistance of the rivets
equating tearing resistance of the plate to the crushing resistance of the rivets
equating shearing resistance to the crushing resistance of the rivets
none of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
24.
When the shaft rotates in anticlockwise direction at slow speed in a bearing, it will
have contact at the bottom most of the bearing
move towards right of the bearing making the metal to metal contact
move towards right of the bearing making no metal to metal contact
move towards left of the bearing making metal to metal contact
Answer: Option
Explanation:
No answer description is available. Let's discuss.
25.
A taper key which fits half in the key way of the hub and half in the key way of shaft, is known as
sunk key
flat saddle key
hollow saddle key
tangent key
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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