71. Which of the following is one of the major exhaust emissions from CI engines compared to SI engines?
72. The hydrocarbons appear due to flame quenching near the metallic walls.
73. The amount of flow in EGR, can be as high as . . . . . . . . of the total intake.
74. Which of the hydro carbon emission released after the combustion of the engine?
75. Oxides of nitrogen in the engines exhaust can be reduced by the following methods:
1. Decrease in compression ratio
2. Exhaust gas recirculation
3. Use of 5% lean mixture
4. Use of oxidation catalysts in exhaust manifold.
The correct methods are
1. Decrease in compression ratio
2. Exhaust gas recirculation
3. Use of 5% lean mixture
4. Use of oxidation catalysts in exhaust manifold.
The correct methods are
76. Which one is a non pollution gas?
77. The intake air-fuel mixture is used to push exhaust residual out of the open exhaust port called scavenging.
78. Oxides of nitrogen can be controlled by
79. Which of the following is used as antiknock compound in gasoline?
80. In spark ignition petrol engines maximum emission of Nox takes place when the air fuel ratio (A/F) is
Read More Section(Air Pollution and its Control in Automobile)
Each Section contains maximum 100 MCQs question on Air Pollution and its Control in Automobile. To get more questions visit other sections.