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231.

The purpose of an automatic process control system generally is

A.	To automatically produce goods	B.	To automatically detect inferior quality goods
C.	To automatically process the raw materials	D.	To direct the forces that give stable plant and process operation by maintaining desired values of process variables or conditions
E.	None of the above

232.

In a sine bar the standard length is measured from

A.	Edge to edge	B.	Between inner circumference of two buttons
C.	Between out circumference of two buttons	D.	Between the centers of two buttons
E.	Any of the above

233.

A micron is

A.	1 mm	B.	0.1 mm
C.	0.01 mm	D.	0.001 mm
E.	0.0001 mm

234.

A hermophrodite caliper is

A.	Outside caliper	B.	Inside caliper
C.	Divider	D.	Has parallel legs
E.	Has one leg bent and other straight with a sharp point

235.

Which one of the following is an angle measuring device?

A.	Trammel	B.	Hermaphrodite caliper
C.	Divider	D.	Angle iron
E.	Sine bar

236.

Which one of the following is not a angle measuring device?

A.	Bevel protector	B.	Signal bar
C.	Combination square	D.	Angle iron
E.	Angle gauge blocks

237.

The type of bearing to be selected for application where low torque, low coefficient of friction, non-magnetic properties and long life are required would be

A.	Bush bearing	B.	Ball bearing
C.	Roller bearing	D.	Needle bearing
E.	Jewel bearing

238.

The type of bearing suitable for high temperature applications where lubrication is impossible and where corrosion or chermical action limits choice of material, would be

A.	Cast iron bearing	B.	Jewel bearing
C.	Needle bearing	D.	Carbon graphite bearing
E.	Aluminium bearing

239.

The important factor to be considered while selecting a bearing is

A.	Applied load	B.	Operating speed range
C.	Required bearing capacity	D.	All of the above
E.	None of the above

240.

Optical flats are made of

A.	Steel	B.	Brass
C.	Plastic	D.	Bakelite
E.	Quartz