791. Which of the following statement is incorrect with reference of lathe cutting tools?
A. The flank of the tool is the surface or surfaces below and adjacent to the cutting edges
B. The nose is the corner, arc or chamfer joining the side cutting and the end cutting edges
C. The heel is that part of the tool which is shaped to produce the cutting edges and face
D. The base is that surface of the shank which bears against the support and takes tangent pressure of the cut

792. In the relation VTn = C, the value of n for carbide tools is
A. 0.1 to 0.2
B. 0.20 to 0.25
C. 0.25 to 0.40
D. 0.40 to 0.55

793. In up milling, the thickness of chip is
A. minimum at the beginning of the cut and maximum at the end of the cut
B. maximum at the beginning of the cut and minimum at the end of the cut
C. uniform throughout the cut
D. none of these

794. The machining of titanium is difficult due to
A. high thermal conductivity of titanium
B. chemical reaction between tool and work
C. low tool-chip contact area
D. none of these

795. In orthogonal cutting system, the maximum chip thickness occurs at the middle.
A. Correct
B. Incorrect

796. Lapping is an operation of
A. making a cone-shaped enlargement of the end of a hole
B. smoothing and squaring the surface around a hole
C. sizing and finishing a small diameter hole
D. producing a hole by removing metal along the circumference of a hollow cutting tool

797. If the helix angle of the drill is made __________ 30°, then the torque required to drive the drill at a given feed will be more.
A. equal to
B. less than
C. more than

798. In hot machining, tool is made of
A. tungsten carbide
B. brass or copper
C. diamond
D. stainless steel

799. In ultra-sonic machining, the metal is removed by
A. using abrasive slurry between the tool and work
B. direct contact of tool with the work
C. maintaining an electrolyte between the work and tool in a very small gap between the two
D. erosion caused by rapidly recurring spark discharges between the tool and work

800. The velocity of tool relative to the workpiece is known as cutting velocity.
A. True
B. False

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

This Post Has One Comment

Leave a Reply