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701.

A blunt tool is used in

A.	gear shaving	B.	piercing
C.	knurling	D.	hot spinning.

702.

A rolling mill is specified by

A.	roll diameter	B.	gross weight
C.	pressure exerted	D.	width of rolls

703.

The operation of cutting multiple holes is called

A.	trimming	B.	notching
C.	perforating	D.	lancing

704.

A piercing operation in which the entire contour is not cut, is known as

A.	bumishing	B.	broaching
C.	notching	D.	lancing

705.

Generally rubber, leather, fibre etc. are blanked by the process of

A.	lancing	B.	broaching
C.	drinking	D.	notching

706.

Spherodising is a

A.	hardening process	B.	annealing process
C.	age-hardening process	D.	surface treatment process

707.

Which of the following is the most rapid quenching medium?

A.	Solution of caustic soda	B.	High flash point oil
C.	Water	D.	Air

708.

Severe quenching may lead to

A.	blow holes	B.	superficial hardness
C.	formation of cracks	D.	warping

709.

In induction hardening the depth of hardening can be controlled by controlling

A.	power factor	B.	current
C.	frequency	D.	voltage

710.

Which hardening process is free from scale formation?

A.	Flame hardening	B.	Cyaniding
C.	Nitriding	D.	Induction hardening