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Machine Design
Machine Design Interview
Quiz 1
Solution
Q.1.
Which of the following is not a classification of fit?
a) Clearance
b) Transition
c) Interference
d) Enjoining
Q.2.
Which of the following always provides a positive clearance between the hole and the shaft over the entire range of tolerances?
a) Clearance
b) Transition
c) Interference
d) None of the mentioned
Q.3.
In this case, tolerance zone of hole is entirely below that of the shaft.
a) Clearance
b) Interference
c) Enjoining
d) Non of the mentioned
Q.4.
Which of the following are true for system of tolerances to the shaft and the hole?
a) In hole-basis system, various shafts are associated with a single hole
b) In hole-basis system as well as shaft-basis system, various shafts are associated with multiple holes
c) In shaft-basis system, various shafts are associated with a single hole
d) None of the mentioned
Q.5.
The description of tolerances consists of two parts namely?
a) Fundamental deviation and magnitude of tolerance
b) Magnitude of deviation and magnitude of tolerance
c) Mean deviation and magnitude of tolerance
d) Fundamental deviation and tolerance
Q.6.
Which of the following are true for fundamental deviation?
a) Gives location of tolerance zone
b) Capital letter is used for both holes and shafts
c) Small letter is used for both holes and shaft
d) None of the mentioned
Q.7.
How many grades of tolerances are there according to BIS system fits and tolerances?
a) 12
b) 14
c) 16
d) 18
Q.8.
Tolerance for a shaft of 50mm diameter as the basic size, with the fundamental deviation denoted by g and tolerance of grade 7 is represented as?
a) g50,7
b) 50g7
c) 7g50
d) None of the mentioned
Q.9.
The temperature at which new stress free grains are formed in the metal is called the ______ temperature.
a) Recrystallization
b) Crystallization
c) Solidification
d) None of the mentioned
Q.10.
Hot working or cold working, which reduces strain hardening and residual stresses.
a) Hot working
b) Cold working
c) Both have equal effect
d) Impossible to detect
Q.11.
Hot rolled components have better toughness and ductility.
a) True
b) False
Q.12.
Hot rolled components have better surface finish than cold rolled components.
a) True
b) False
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