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261.

When a thin job is to be machined on a shaper, in order to prevent warping, which one of the following steps should be taken first?

A.	Light cut	B.	Heavy cut
C.	Single heavy cut	D.	Any of the above

262.

A stub tooth is one that is

A.	Thicker in proportion to its length than involute tooth	B.	Same as involute tooth
C.	Smaller in proportion to its length than the involute tooth	D.	None of these

263.

Which of the following gears are not used to transmit motion from one shaft to another shaft at an angle to the first?

264.

In automatic control systems a good control is

A.	One that is automatically controlled	B.	One that gives maximum production
C.	One that gives high operating efficiency	D.	One that gives good results
E.	One that has minimum deviation following a disturbance

265.

In automatic control systems what could be the source of process disturbances?

A.	Changes in supply	B.	Changes in demand
C.	Changes in environmental and other associated variables	D.	Change in set point
E.	Any of the above

266.

The advantage of a pneumatically operated control system is

A.	It can be used in hazardous atmosphere	B.	Simplicity of components
C.	Easily maintained	D.	Relatively inexpensive
E.	All of the above

267.

The difference between a plate and sheet is

A.	A sheet is more than 5 mm in thickness	B.	A plate is less than 5 mm in thickness
C.	A sheet is always more than 5 metres in length	D.	A sheet is always less than 5 mm thick and a plate more than 5 mm thick
E.	Sheet and plate are same and thickness is immaterial

268.

A strip is

A.	Same as sheet	B.	Same as plate
C.	A sheet less than 6 mm in thickness and 300 mm in width	D.	A section other than rectangular
E.	A cold rolled sheet

269.

A foil is

A.	Same as sheet	B.	Same as strip
C.	A cold rolled sheet	D.	A thin strip with maximum width 300 mm and a maximum thickness of 1.5 mm
E.	None of the above

270.

Refractory metals are

A.	Those which reflect heat	B.	Those which absorb heat
C.	Those which have melting point above 1950?C	D.	Those do not malt in a normal furnace
E.	Those which can be cast in the form of bricks