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351.

Which type of bearing is provided at the big end of connecting rod?

A.	Ball bearing	B.	Cast iron bearing
C.	Ball bearing	D.	Needle bearing
E.	Roller bearing

352.

Which of the following drive cannot be used for driving cam shaft of a four stroke intemal cambustion engine?

A.	Spur gear drive	B.	Helical gear drive
C.	Chain drive	D.	V-belt drive
E.	None of the above

353.

When power is to be transmitted by two pulleys of different materials, then design will be based on pulley

A.	Having smaller diameter	B.	Having larger diameter
C.	Having (	D.	Having (
E.	Any of the above

354.

A key that transmits power through frictional resistance only is

A.	Saddle key	B.	Wood ruff key
C.	Square key	D.	All of the above
E.	None of the above

355.

The resilience of a bolt may be increased by

A.	Increasing its length	B.	Providing an under cut
C.	Increasing shank diameter	D.	Increasing the size of head
E.	Increasing the diameter of threaded portion

356.

Large sections usually have a somewhat lower permissible stress than small sections. This is due to

A.	less homogeneity of structure of material	B.	larger residual stress
C.	greater probability of structural flaws	D.	All of the above

357.

The wrist pin of diesel engine is always in

A.	single shear	B.	double shear
C.	a tresss free from shear

358.

In a central heating system, the seamless copper tubing used has an inside diameter of 20 mm and a wall thickness of 0.6 mm. For a maximum pressure of 1750 Kpa, when allowable stress is 225 Mpa, the safety factor will be

A.	3.3	B.	5.5
C.	7.7	D.	9.9

359.

Fatigue failure starts at some

A.	hole	B.	discontinuity
C.	point	D.	star

360.

Extrafine threaded connections are generally recommended for

A.	Tapped hole in castings	B.	Rolled sections
C.	thin walled assemblies	D.	hardened objects