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Mechanical Engineering - Machine Design

Exercise : Machine Design - Section 8
26.
According to Lame's equation, the thickness of a cylinder is equal to (where d = Inner diameter of cylinder, p = Internal pressure, and μ = Poisson's ratio. )
none of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.
27.
If T is the actual number of teeth on a helical gear and φ is the helix angle for the teeth, then formative number of teeth is written as
T sec3 φ
T sec2 φ
T/sec3 φ
T cosec φ
Answer: Option
Explanation:
No answer description is available. Let's discuss.
28.
The material generally used for air-craft components is
mild steel
high speed steel
stainless steel
aluminium
Answer: Option
Explanation:
No answer description is available. Let's discuss.
29.
The speed of the sprocket reduces as the chain pitch __________ for a given number of teeth.
increases
decreases
Answer: Option
Explanation:
No answer description is available. Let's discuss.
30.
In an oil lubricated journal bearing, the coefficient of friction between the journal and the bearing
remains constant at all speeds
is minimum at zero speed and increases monotonically with increase in speed
is maximum at zero speed and decreases monotonically with increase in speed
becomes minimum at an optimum speed and then increases with further increase in speed
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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