Exercise: Machine Design

Questions for: Machine Design

A pressure vessel is said to be a thick shell, if the ratio of wall thickness to its diameter is
A:
equal to 1/10
B:
less than 1/10
C:
greater than 1/10
D:
none of these
Answer: C
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The minor diameter of a screw thread is also known as outside or nominal diameter.
A:
Correct
B:
Incorrect
C:
D:
Answer: B
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The cam follower extensively used in air-craft engines is
A:
knife edge follower
B:
flat faced follower
C:
spherical faced follower
D:
roller follower
Answer: D
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According to Indian standards, the diameter of rivet hole is made larger than the basic size of rivet by
A:
0.5 mm upto rivet diameter of 24 mm
B:
1 mm for rivet diameter from 27 mm to 36 mm
C:
2 mm for rivet diameter from 39 mm to 48 mm
D:
all of the above
Answer: C
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The ratio of the ultimate stress to the design stress is known as
A:
elastic limit
B:
strain
C:
factor of safety
D:
bulk modulus
Answer: C
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