337. A diesel engine as compared to petrol engine (both running ar rated load) is
A.More Efficient
B.Less Efficient
C.Equally Efficient
D.Unpredictable
338. The size of inlet valve of an engine in comparison to exhaust valve is
A.More
B.Less
C.Same
D.More/Less Depending On Capacity Of Engine
339. In a cycle, the spark lasts roughly for
A.1 Sec
B.0.1 Sec
C.0.01 Sec
D.0.001 Sec
340. Which of the following is false statement. Some of the methods used to reduce diesel smoke are as follows
A.Using Additives In The Fuel
B.Engine Derating I.E. Reducing The Maxi-Mum Flow Of Fuel
C.Increasing The Compression Ratio
D.Adherence To Proper Fuel Specification
341. The fuel air ratio in a petrol engine fitted with suction carburetor, operating with dirty air filter as compared to clean filter will be
A.Higher
B.Lower
C.Remain Unaffected
D.Unpredictable
342. Pick up the wrong statement about supercharging
A.Supercharging Reduces Knocking In Diesel Engines
B.There Can Be Limited Supercharging In Petrol Engines Because Of Detonation
C.Supercharging At High Altitudes Is Essential
D.Supercharging Results In Fuel Economy
343. The actual volume of fresh charge admitted in 4-stroke petrol engine is
A.Equal To Stroke Volume
B.Equal To Stroke Volume And Clearance Volume
C.Less Than Stroke Volume
D.More Than Stroke Volume
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