Exercise: Machine Design

Questions for: Machine Design

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
A:
T sec3 φ
B:
T sec2 φ
C:
T/sec3 φ
D:
T cosec φ
Answer: A
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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. )
A:
B:
C:
D:
none of these
Answer: C
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When the shaft rotates in anticlockwise direction at high speed in a bearing, it will
A:
have contact at the bottom most of the bearing
B:
move towards right of the bearing making metal to metal contact
C:
move towards right of the bearing making no metal to metal contact
D:
move towards left of the bearing making metal to metal contact
Answer: C
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In a turnbuckle, if one of the rods has left hand threads, then the other rod will have
A:
right hand threads
B:
left hand threads
C:
multiple threads
D:
pointed threads
Answer: A
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A connecting rod subjected to an axial load may buckle in the plane of motion of the connecting rod.
A:
Correct
B:
Incorrect
C:
D:
Answer: A
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