1. Balancing of wheel is done to
equalize the weight in every position of the wheel.
2. Grinding fluids are used to
(a) reduce the friction between the wheel face and the job
(b) wash away chips
(c) prevent loading of wheel
(d) all of the above.
3. Taps are re-sharpened by grinding
flutes.
4. The tapping hole should be
equal to the core (minor) diameter of the tap.
5. A rough file is used
to reduce the metal rapidly.
6. Tap water is NOT preferred as coolant while drilling. What is the reason for this ?
Danger of corrosion.
7. A die is
external thread cutting tool.
8. A groove is being chipped by a chisel. How will you avoid the metal breaking off as a lump, when reachingthe end of the groove ?
By chipping the end portion from opposite side.
9. You have to cut an aluminium block to smooth finish. Which one of the following cut of file
is most suitable ?
Single cut.
10. For cylindrical grinding a small diameter work with fairly large wheel, which among
the following grades of wheel should be used ?
Hard .
11. The teeth of hacksaw blade are set to
(a) provide clearance for the blade
(b) prevent jamming and breakage of blade
(c) make the kerf wider than the blade
(d) all of the above
12. Which one the following drilling machines is used for drilling holes where electricity is
not available ?
Ratchet drilling machine.
13. Which of the following reamers is particularly suitable for reaming holes having key
way grooves ?
Helical fluted reamer.
14. How does a hand reamer differ from a machine reamer ?
Larger bevel lead for the cutting edges
15. It is commonly observed that the face of a grinding wheel becomes shiny and smooth or
glazed after some use due to one of the following reasons.
Grade of wheel is too hard
16. What is the cause of a grinding wheel becoming glazed in a grinding machine ?
Grinding wheel's speed is too high and work speed is low.
equalize the weight in every position of the wheel.
2. Grinding fluids are used to
(a) reduce the friction between the wheel face and the job
(b) wash away chips
(c) prevent loading of wheel
(d) all of the above.
3. Taps are re-sharpened by grinding
flutes.
4. The tapping hole should be
equal to the core (minor) diameter of the tap.
5. A rough file is used
to reduce the metal rapidly.
6. Tap water is NOT preferred as coolant while drilling. What is the reason for this ?
Danger of corrosion.
7. A die is
external thread cutting tool.
8. A groove is being chipped by a chisel. How will you avoid the metal breaking off as a lump, when reachingthe end of the groove ?
By chipping the end portion from opposite side.
9. You have to cut an aluminium block to smooth finish. Which one of the following cut of file
is most suitable ?
Single cut.
10. For cylindrical grinding a small diameter work with fairly large wheel, which among
the following grades of wheel should be used ?
Hard .
11. The teeth of hacksaw blade are set to
(a) provide clearance for the blade
(b) prevent jamming and breakage of blade
(c) make the kerf wider than the blade
(d) all of the above
12. Which one the following drilling machines is used for drilling holes where electricity is
not available ?
Ratchet drilling machine.
13. Which of the following reamers is particularly suitable for reaming holes having key
way grooves ?
Helical fluted reamer.
14. How does a hand reamer differ from a machine reamer ?
Larger bevel lead for the cutting edges
15. It is commonly observed that the face of a grinding wheel becomes shiny and smooth or
glazed after some use due to one of the following reasons.
Grade of wheel is too hard
16. What is the cause of a grinding wheel becoming glazed in a grinding machine ?
Grinding wheel's speed is too high and work speed is low.
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