Exercise: Machine Design

Questions for: Machine Design

The material commonly used for machine tool bodies is
A:
mild steel
B:
aluminium
C:
brass
D:
cast iron
Answer: D
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A bolt has
A:
threads for the nut at one end and head at the other end
B:
head at one end and the other end fits into a tapped hole of one of the parts to be fastened
C:
threads at both ends
D:
pointed threads
Answer: A
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A cotter joint is used to connect two __________ rods.
A:
co-axial
B:
perpendicular
C:
parallel
D:
Answer: A
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In a flat belt drive, if the slip between the driver and belt is 1 %, between the belt and follower is 3% and driver and follower pulley diameters are equal, then velocity ratio of the drive will be
A:
0.96
B:
0.97
C:
0.98
D:
0.99
Answer: A
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In a full journal bearing, the angle of contact of the bearing with the journal is
A:
120°
B:
180°
C:
270°
D:
360°
Answer: D
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