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11.

Gang milling is

A.	Process of cutting gears	B.	Milling process for generating hexagonal surfaces
C.	Process in which two or more cutters are used simultangeously	D.	High speed milling
E.	Milling operation combined with turning

12.

A half nut is

A.	Damaged nut	B.	Nut manufactured in parts
C.	Nut with half the standard pitch	D.	A double start nut for a quick shift
E.	Mechanism that locks the lathe carriage to the lead screw for thread cutting

13.

Magna flux is

A.	A non-destructive inspection technique that makes use of magnetic field and magnetic particles to locate flaw in materials	B.	An instrument using ultrasonic techniques for crack detection
C.	An instrument used for inspection of weldings	D.	An instrument used for precision measurements using magnetism and flux density
E.	Intensity of X-rays required corresponding to thickness of a job for determination of defects.

14.

The size of a lathe is expressed by

A.	Gross weight of lathe	B.	Diameter of chuck
C.	Maximum speed of chuck	D.	Swing of lathe
E.	Height of centres from ground

15.

Lathe bed is made of

16.

The power is transmitted by lead screw to the carriage through

A.	Gear system	B.	Pulley drive
C.	Rack and pinion a arrangement	D.	Half nut
E.	Chain drive

17.

A left hand tool on a lathe cuts most efficiently when

A.	It travels from left to right	B.	It travels from right to left
C.	It travels across the bed	D.	It is operated by compound slide
E.	Automatic feed is connected

18.

While using HSS tools on a lathe, cutting speed will be maximum when machining

19.

While using high speed steel tools on lathe the speed of chuck will be lowest while machining

20.

In which operation on a work piece on lathe the spindle speed with be least?