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71.

To clean a hand file

72.

Size of a shaper is generally specified by

A.	The area of machined surface per hour	B.	Maximum travel of cutting tool
C.	Length, breadth and height of machine	D.	Quick return ratio
E.	Weight of the machine

73.

In climb milling

A.	Work moves in same direction as rotation of the cutter	B.	Work moves in opposite direction as rotation of the cutter
C.	Tool climbs on the work piece for cutting operation	D.	Work is fed to cutter in lateral direction
E.	Cutting takes place in two planes simultaneoudly

74.

In a 32A 49-H 8V BE grinding wheel the grit size is represented by

75.

Standard taper generally used on milling machine spindles is

76.

Which one of the following methods can be used for turning external tapers only?

77.

A 12 mm drilling machine means

A.	It can drill holes in 12 mm thick plates	B.	It can drill holes maximum 12 mm in diameter
C.	It can be used for crilling holes having cross-sectional area of 12 sq mm	D.	All of the above
E.	None of the above

78.

In following operations are to be performed on a job, which one would be performed first

79.

Spiral flutes are provided on drill bits to

A.	Help from the cutting edge of the drill point	B.	Curl the chip tightly for easier removal
C.	Provide passage for coolant supply	D.	All of the above
E.	None of the above

80.

Point angle of drill is usually more while drilling