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Mechanical Engineering - Machine Design

Exercise : Machine Design - Section 3
46.
A metal pipe of 1 m diameter contains a fluid having a pressure of 1 N/mm2. If the permissible tensile stress in the metal is 20 N/mm2, then the thickness of the metal required for making the pipe will be
5 mm
10 mm
15 mm
25 mm
Answer: Option
Explanation:
No answer description is available. Let's discuss.
47.
A tangent key is provided in pairs at right angles and each key is to withstand torsion in one direction only.
Agree
Disagree
Answer: Option
Explanation:
No answer description is available. Let's discuss.
48.
When the speed of belt increases,
the coefficient of friction between the belt and pulley increases
the coefficient of friction between the belt and pulley decreases
the power transmitted will decrease
the power transmitted will increase
Answer: Option
Explanation:
No answer description is available. Let's discuss.
49.
According to law of gearing, the common normal at the point of contact between a pair of teeth must always pass through the pitch point.
Correct
Incorrect
Answer: Option
Explanation:
No answer description is available. Let's discuss.
50.
An involute pinion and gear are in mesh. If both have the same size of addendum, then there will be interference between the
tip of the gear and flank of pinion
tip of the pinion and flank of gear
flanks of both gear and pinion
tip of both gear and pinion
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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