761. In order to prevent tool from rubbing the work __________ on tools are provided.
A. rake angles
B. relief angles

762. The silicon carbide abrasive is chiefly used for grinding
A. cemented carbide
B. ceramic
C. cast iron
D. all of these

763. Drilling is an example of
A. orthogonal cutting
B. oblique cutting
C. simple cutting
D. uniform cutting

764. A round nose tool may be fed eitner from left to right end or from right to left end of the lathe bed.
A. Yes
B. No

765. When the cutting edge of the tool is dull, then during machining
A. continuous chips are formed
B. discontinuous chips are formed
C. continuous chips with built-up edge are formed
D. no chips are formed

766. A fine grained grinding wheel is used to grind hard materials.
A. Correct
B. Incorrect

767. Cast iron during machining produces
A. continuous chips
B. discontinuous chips
C. continuous chips with built-up-edge
D. none of these

768. A single point thread cutting tool should ideally have
A. zero rake angle
B. positive rake angle
C. negative rake angle
D. point angle

769. 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

770. The cutting tool in a milling machine is mounted on
A. spindle
B. arbor
C. column
D. knee

NOTE
IF YOU THINK ANY OF THE MCQ ABOVE IS WRONG.
PLEASE COMMENT WITH CORRECT ANSWER AND ITS DETAIL EXPLANATION IN COMMENT BOX.
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