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171.

A petrol engine as compared to diesel engine (both running at full load) is

172.

In isochronous governors the speed drop is

173.

An engine operates at 1440 rpm under load whereas no load speed is 1500 rpm. The percentage speed drop of governor will be

174.

Air fuel ratio in a petrol engine fitted with dirty air cleaner as compared to that with clean air clearance will be

175.

If the air clearance is removed in a carburettor engine the fuel air ratio will be

176.

Inlet valve of a IC engine remains open for

177.

Which of the following is a false statement. A multicylinder diesel engine is missing on one or more cylinders. The cause may be

A.	Valve sticky	B.	Valves leaky
C.	Compression poor	D.	Insufficient fuel supply to cylinders
E.	Air cleaner plugged

178.

Oil rings are slotted to

A.	Provide an escape for the oil that the slot edges cut from the cylinder wall	B.	Reduce the bulk
C.	Minimise friction	D.	Better lubrication of cylinder walls
E.	Remove oil from cylinder

179.

Which of the following is a false stagement: The cause of excessive engine vibrations especially at high speeds in spark ignition engines is

A.	Unequal compression of engine cylinders	B.	Ignition distributor point not synchrohized
C.	Unbalanced crankshaft	D.	Unbalanced fan or loose fan blade
E.	Unequal distribution of mixture

180.

Baffles are provided on engines to

A.	Improve heat transfers rate	B.	Improve engine performance
C.	Reduce fuel consumption	D.	Assist in starting the engine
E.	Guard against dirt and dust