Practice Test: Question Set - 01
1. Hot working of metals is carried out
- (A) Above
the recrystallization temperature
- (B) Below
the recrystallization temperature
- (C) At
the recrystallization temperature
- (D) At
higher temperature
2. In transition 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
3. The tolerance of grade 8 is obtained by
- (A) Die
casting
- (B) Turning
on capstan and turret lathes
- (C) Grinding
- (D) Sand
casting
4. Cylinder blocks of internal combustion engine are made by
- (A) Forging
- (B) Extrusion
- (C) Casting
- (D) Drilling
and broaching
5. Draft angle is provided for forged parts
- (A) To
arrange fiber lines in a favorable way
- (B) To
avoid unbalanced forced
- (C) For
easy removal from die cavities
- (D) To
reduce stress concentration
6. In unilateral system for tolerances,
- (A) Tolerances
are given on both positive and negative sides of basic size
- (B) One
tolerance is zero and other tolerance is given on any one side of basic size
- (C) One
tolerance is zero and other tolerance is given only on higher side of basic
size
- (D) One
tolerance is zero and other tolerance is given only on lower side of basic size
7. Valve bodies of internal combustion engine are made by
- (A) Forging
- (B) Rolling
- (C) Casting
- (D) Turning
from bar stock
8. In bilateral system for tolerances,
- (A) Tolerances
are given on both positive and negative sides of basic size
- (B) One
tolerance is zero and other tolerance is given on any one side of basic size
- (C) One
tolerance is zero and other tolerance is given only on higher side of basic
size
- (D) One
tolerance is zero and other tolerance is given only on lower side of basic size
9. According to Indian standard, total numbers of tolerance grades are
- (A) 10
- (B) 20
- (C) 18
- (D) 8
10. The tolerance of grade 6 is obtained by
- (A) Die
casting
- (B) Turning
on capstan and turret lathes
- (C) Grinding
- (D) Sand
casting
11. In machined 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
12. According to Indian standard, 50 H8-g7 means
- (A) Upper
limit is (50 + 8) mm and lower limit (50 - 7) mm
- (B) Designation
of tolerance with basic size 50 mm
- (C) Designation
of fit of two parts with basic size 50 mm
- (D) None
of above
13. Hot working
- (A) Increases
toughness and ductility
- (B) Increases
surface finish
- (C) Increases
hardness and strength
- (D) Produces
accurate dimensions for the parts
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