Practice Test: Question Set - 02
1. The tolerance of grade 16 is obtained by
- (A) Die
casting
- (B) Turning
on capstan and turret lathes
- (C) Grinding
- (D) Sand
casting
2. In forged components,
- (A) Fiber
lines are arranged in a predetermined way
- (B) Fiber
lines of rolled stock are broken
- (C) There
are no fiber lines
- (D) Fiber
lines are scattered
3. The temperature at which new stress-free grains are formed in the metal is called
- (A) Upper
critical temperature
- (B) Melting
point
- (C) Recrystallization
temperature
- (D) Eutectic
temperature
4. In shaft-basis system, the basis shaft is one
- (A) Whose upper
deviation is zero
- (B) Whose
upper and lower deviations are zero
- (C) Whose lower
deviation is zero
- (D) None
of the above
5. Cold working
- (A) Increases
toughness and ductility
- (B) Reduces
residual stresses
- (C) Increases
hardness and strength
- (D) Produces
favorable pattern of fiber lines
6. In hole-basis system, the basis hole is one
- (A) Whose
upper deviation is zero
- (B) Whose
upper and lower deviations are zero
- (C) Whose
lower deviation is zero
- (D) None
of the above
7. In cast components,
- (A) Fiber
lines are arranged in a predetermined way
- (B) Fiber
lines of rolled stock are broken
- (C) There
are no fiber lines and grains are scattered
- (D) Grains
are arranged in a predetermined way
8. Cold working of metals is carried out
- (A) Above
the recrystallization temperature
- (B) Below
the recrystallization temperature
- (C) At
the recrystallization temperature
- (D) At
lower temperature
9. According to Indian standard, 50 H8-g7 means
- (A) Tolerance
grade for hole is 8 and for shaft is 7
- (B) Tolerance
grade for shaft is 8 and for hole is 7
- (C) Designation
of fit on shaft-basis system
- (D) None of
above
10. In interference fit,
- (A) Tolerance
zones of hole and shaft overlap
- (B) Tolerance
zone of hole is completely below that of shaft
- (C) Tolerance
zone of hole is entirely above that of shaft
- (D) None of the
above
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