11. A fine-grained grinding wheel is used to grind hard materials.
A. Correct
B. Incorrect
12. Cast iron during machining produces
A. continuous chips
B. discontinuous chips
C. continuous chips with built-up-edge
D. none of these
13. A single point thread cutting tool should ideally have
A. zero rake angle
B. positive rake angle
C. negative rake angle
D. point angle
14. The work or surface speed for cylindrical grinding varies from
A. 5 to 10 m/min
B. 10 to 20 m/min
C. 20 to 30 m/min
D. 40 to 60 m/min
15. The cutting tool in a milling machine is mounted on
A. spindle
B. arbor
C. column
D. knee
16. The tool made of cemented carbide wear out faster at
A. slow speeds
B. medium speeds
C. fast speeds
D. very fast speeds
17. A push broach as compared to pull broach
A. has less number of teeth
B. is short and stocky
C. removes less material for each pass of the tool
D. all of the above
18. Twist drills are made of
A. high speed steel
B. carbon steel
C. stainless steel
D. either (a) or (b)
19. A twist drill is a
A. side cutting tool
B. front cutting tool
C. end cutting tool
D. none of these
20. The rake angle required to machine brass by high speed steel tool is
A. 0°
B. 10°
C. 20°
D. -10°