151. As the cutting speed increases, tool life decreases.
Yes
No
✅ The correct answer is option A.
Production Engineering MCQs
152. In __________ operation, the cutting force is maximum when the tooth begins its cut and reduces it to minimum when the tooth leaves the work.
up milling
down milling
face milling
end milling
✅ The correct answer is option B.
153. Which of the following statement is correct about nose radius?
It improves tool life
It improves the surface finish
both (a) and (b)
none of these
✅ The correct answer is option C.
154. While cutting helical gears on a non-differential gear hobber, the feed change gear ratio is
independent of index change gear ratio
dependent on speed change gear ratio
inter-related to index change gear ratio
independent of speed a
✅ The correct answer is option C.
155. The lip clearance angle is the angle formed by the
leading edge of the land with a plane having the axis of the drill
flank and a plane at right angles to the drill axis
chisel edge and the lip as viewed from the end of a drill
none of the above
✅ The correct answer is option B.
156. In metal machining, the work-tool contact zone is a zone where heat is generated due to
plastic deformation of metal
burnishing friction
friction between the moving chip and the tool face
none of the above
✅ The correct answer is option B.
157. The velocity of tool along the tool face is known as
shear velocity
chip velocity
cutting velocity
mean velocity
✅ The correct answer is option B.
158. Which of the following process is used for preparing parts having large curved surfaces and thin sections?
Hot machining
Ultra-sonic machining
ECM process
Chemical milling
✅ The correct answer is option D.
159. The grinding wheel speed (surface speed in m/min) usually varies from
500 to 1000
1000 to 1500
1500 to 2000
2000 to 2500
✅ The correct answer is option C.
160. The lip angle is the angle
between the tool face and the ground end surface of flank
made by the face of the tool and the plane parallel to the base of the cutting tool
between the face of the tool and a line tangent to the machined surface at the cutting point
none of the above
✅ The correct answer is option A.