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Mechanical Engineering Objective Questions { Internal Combustion Engines }



197. In a diesel engine, injection pressure developed by injector is of the order of
A.10 kg/cm2
B.100 kg/cm2
C.500 kg/cm2
D.1400 kg/cm2
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198. All the four operations in two stroke engine are performed in following number of revolutions of crank shaft
A.Half
B.One
C.Two
D.Four
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199. In the case of compression ignition engine, the %age of CO in exhaust gases is
A.Zero
B.5-10%
C.Depends on load
D.Considerable percent
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200. As the number of cylinders in multi-cylinder engine increases, the power to weight ratio
A.Decreases
B.Increases
C.Remains same
D.Decreases upto a limit and then increases
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201. In the case of petrol engine at maximum output, the percentage of CO in exhaust gases is
A.Zero
B.5-10%
C.Depends on load and quality of fuel
D.Considerable percent
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202. The thermal efficiency of a petrol engine at design load is around
A.90%
B.50%
C.40%
D.30%
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203. In isochronous governing, speed droop is
A.100%
B.50%
C.5%
D.30%
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