1. The angle of drill grinding gauge is
121° .
2. A die nut is nothing but
a die in the shape of a nut.
3. A warding file is similar to
flat file but thinner in thickness.
4. The taper shank of a drill of 20 mm diameter has
MT-2 taper.
5. For grinding carbide materials
Silicon carbide wheel is used.
6. Hacksaw blades with fine-pitched teeth are more effective on
thin section metal .
7. When threading a blind hole, the third (finisher) tap is used
to thread the hole with full threads upto the bottom.
8. In case of a single cut file, the teeth are cut on the file face at an angle of
60° to the centre line of the file.
9. A short reamer with an axial hole used with an arbor or mandrel is called
chucking reamer.
10. The material of twist drill is generally
H.S.S.
11. The best position to hold the job in the vice when filing is
elbow level.
12. Which one among the following is NOT the cause for a broken tap while tapping ?
The tap has coarse threads.
13. What will happen if the job is loosely fitted between centres in cylindrical grinding ?
The job will be out of round.
14. The cause for glazing of a grinding wheel is
(a) grain size is too fine
(b) wheel is hard.
(c) 'A' and 'B' both.
15. Which one of the following bonds is most commonly used on grinding wheels ?
Vitrified
16. A grinding wheel marked with 'C' is made with the
Silicon carbide.
17. As per Indian Standards the grain size '46' comes under the group
medium.
18. As per Indian Standards the 'M' grade of grinding wheel comes under the group
medium.
19. A grinding wheel is marked : 51 A 46 L 5 V - 23. Here what does 5 denote ?
Structure.
121° .
2. A die nut is nothing but
a die in the shape of a nut.
3. A warding file is similar to
flat file but thinner in thickness.
4. The taper shank of a drill of 20 mm diameter has
MT-2 taper.
5. For grinding carbide materials
Silicon carbide wheel is used.
6. Hacksaw blades with fine-pitched teeth are more effective on
thin section metal .
7. When threading a blind hole, the third (finisher) tap is used
to thread the hole with full threads upto the bottom.
8. In case of a single cut file, the teeth are cut on the file face at an angle of
60° to the centre line of the file.
9. A short reamer with an axial hole used with an arbor or mandrel is called
chucking reamer.
10. The material of twist drill is generally
H.S.S.
11. The best position to hold the job in the vice when filing is
elbow level.
12. Which one among the following is NOT the cause for a broken tap while tapping ?
The tap has coarse threads.
13. What will happen if the job is loosely fitted between centres in cylindrical grinding ?
The job will be out of round.
14. The cause for glazing of a grinding wheel is
(a) grain size is too fine
(b) wheel is hard.
(c) 'A' and 'B' both.
15. Which one of the following bonds is most commonly used on grinding wheels ?
Vitrified
16. A grinding wheel marked with 'C' is made with the
Silicon carbide.
17. As per Indian Standards the grain size '46' comes under the group
medium.
18. As per Indian Standards the 'M' grade of grinding wheel comes under the group
medium.
19. A grinding wheel is marked : 51 A 46 L 5 V - 23. Here what does 5 denote ?
Structure.
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