Top Production Engineer Interview Questions & Answers:

1. 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

C. The heel is that part of the tool which is shaped to produce the cutting edges and face

2. The velocity of tool relative to the work piece is known as cutting velocity.

A. True
B. False

A. True

3. 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

A. using abrasive slurry between the tool and work

4. Grinding wheels should be tested for balance:

A. only at the time of manufacture
B. before starting the grinding operation
C. at the end of grinding operation
D. occasionally

D. occasionally

5. The angle included between the two lips projected upon a plane parallel to the drill axis and paralled to the two cutting lips, is called helix angle.

A. Correct
B. Incorrect

B. Incorrect

6. The correct sequence of tool materials in increasing order of their ability to retain their hot hardness is:

A. carbide, ceramic, cermet, borazon
B. ceramic, carbide, borazon, cermet
C. cermet, carbide, ceramic, borazon
D. borazon, ceramic, carbide, cermet

C. cermet, carbide, ceramic, borazon

7. Larger end cutting edge angle __________ tool life.

A. increases
B. decreases
C. does not effect

A. increases

8. In hot machining, tool is made of:

A. tungsten carbide
B. brass or copper
C. diamond
D. stainless steel

A. tungsten carbide

9. The different spindle speeds on a lathe form:

A. arithmetical progression
B. geometrical progression
C. harmonical progression
D. any one of these

B. geometrical progression

10. 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

B. less than