1. A broach has
A. roughing teeth
B. semi-finishing teeth
C. finishing teeth
D. all of these
2. A round nose tool has no back rake and side rake.
A. Correct
B. Incorrect
3. In electro-discharge machining, tool is made of
A. brass
B. copper
C. copper tungsten alloy
D. all of these
4. The cutting speed is maximum while machining __________ with a high speed steel tool.
A. cast iron
B. mild steel
C. brass
D. aluminium
5. The obtuse angle, included between the chisel edge and the lip as viewed from the end of a drill, is called
A. helix or rake angle
B. point angle
C. chisel edge angle
D. lip clearance angle
6. The plain milling machine is more rigid and heavier in construction than a universal milling machine of the same size.
A. Correct
B. Incorrect
7. An operation of embossing a diamond shaped pattern on the surface of a workpiece, is known as
A. counter-boring
B. grooving
C. knurling
D. facing
8. An operation of enlarging the end of a hole cylindrically is known as grooving.
A. Correct
B. Incorrect
9. Which of the following statement is wrong?
A. The larger side rake angle produces chipping.
B. The smaller rake angle produces excessive wear and deformation in tool.
C. The side cutting edge angle (less than 15°) increases tool life.
D. The increase in nose radius decreases tool life.
10. It is desired to perform the operations like drilling, reaming, counter-boring etc. on a work piece. Which of the following machine will be used?
A. Sensitive drilling machine
B. Radial drilling machine
C. Gang drilling machine
D. Multiple spindle drilling machine
11. The lathe centres are provided with standard taper known as
A. Morse taper
B. Seller’s taper
C. Chapman taper
D. Brown and Sharpe taper
12. In a plain milling cutter, the portion of the gash adjacent to the cutting edge on which the chip impinges is called
A. face B. fillet
C. land D. lead
13. The grooving is an operation of
A. bevelling the extreme end of a workpiece
B. embossing a diamond shaped pattern on the surface of a workpiece
C. reducing the diameter of a workpiece over a very narrow surface
D. enlarging the end of a hole cylindrically
14. Cutting fluids are used to
A. cool the tool
B. improve surface finish
C. cool the workpiece
D. all of these
15. The structure of a grinding wheel depends upon
A. hardness of the material being ground
B. nature of the grinding operation
C. finish required
D. all of these
16. In a plain milling cutter, the chip space between the back of one tooth and the face of the next tooth is called
A. face
B. fillet
C. gash
D. land
17. In which of the following machine, the work rotates and the tool is stationary?
A. Vertical boring machine
B. Horizontal boring machine
C. Precision boring machine
D. Jig boring machine
18. The cutting fluid mostly used for machining alloy steels is
A. water
B. soluble oil
C. dry
D. sulphurised mineral oil
19. The cutting speed is zero at the periphery and it is maximum at the centre of the drill.
A. Yes
B. No
20. In metal cutting operations, chips are formed due to plastic deformation of the metal.
A. Agree
B. Disagree