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231.

In concrete mixer, the bevel gears for rotating the drum are generally

232.

In most machine members, the damping capacity of the material should be

233.

The curve traced by a point on a line as the line rolls on another curve is known as

234.

Addendum is

A.	The depth of a gear tooth	B.	Half the depth of a gear tooth
C.	Depth of tooth space below the pitch circle	D.	Height by which tooth projects beyond the pitch circle
E.	None of the above

235.

Backlash is

A.	Sum of the clearance of two gears	B.	Mutual play between two gears
C.	The amount by which the width of a tooth space exceeds the thickness of the engaging tooth on pitch circle	D.	Any of the above
E.	None of the above

236.

If the shearing stress in a nut is equal to half the tensile stress in a bolt then the length of nut should be equal to

A.	0.5 times diameter of the bolt	B.	0.75 times the diameter of the bolt
C.	Diameter of the bolt	D.	1.25 times diameter of the bolt
E.	1.50 times diameter of the bolt

237.

The bearing used in railway wagons are

238.

The usual clearance provided in hydrodynamic bearing per mm of diameter of shaft is

239.

The rated life of a ball bearing vaires

240.

In hydrodynamic bearings

A.	The oil film pressure is generated by external pump	B.	The oil film pressure is generated by dead weight of shaft
C.	The oil film pressure is generated only when the shaft rotates	D.	The oil film is sufficiently thick
E.	None of the above