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611.

Which of the following is a process of chipless machining?

612.

In lathe machine the chasing dial is used during

613.

Chip breakers are used while machining

A.	ductile materials	B.	brittle materials
C.	Both (A) and (B)	D.	None of the above

614.

Kuock out mechanism in press is used to

A.	chamfer the edges	B.	eject out the component
C.	shift the position of work piece after one operation	D.	None of the above

615.

In power presses bolster plate is used to

A.	mount the press tool	B.	eject the pressed component
C.	position the piece	D.	cut the edges

616.

Which of the following is located within the bolster?

A.	Cushion	B.	Ram
C.	Bed plate	D.	All of the above

617.

Which of the following has better machinability as compared to the remaining?

A.	Zinc alloys	B.	Low carbon steels
C.	Wrought iron	D.	Gun metal

618.

While machining which of the following improves surface finish?

A.	Increased depth of cut	B.	Increased feed rate
C.	Increased cutting speed	D.	Formation of built-up edge

619.

Hardness of diamond can be determined by

A.	Brinell hardness tester	B.	Rockwell hardness tester
C.	Vickers hardness tester	D.	None of the above

620.

As far as machinability is concerned, which of the following will be considered to be most inferior alloy?

A.	Bearing bronze	B.	Monel metal
C.	Gun metal	D.	Malleable cast iron