A Best Way To Crack Gorenment Job Exams

Automobile Engineering Objective Questions { Automotive Pollution and Control }



1. During which condition of the vehicle does NOx emission in SI engine will be lowest?
A. Cruising
B. Idling
C. Accelerating
D. Decelerating
Discuss in Forum
2. The primary condition that results in the emission of NOx is large quantities is
A. Low temperature combustion
B. Incomplete combustion
C. Combustion with a near stoichiometric air-fuel ratio
D. High atmospheric temperature conditions
Discuss in Forum
3. The function of a resonator is that it
A. Regulates the intake air flow rate
B. Reduces the intake noise
C. Enhances intake efficiency
D. Regulates the intake air temperature
Discuss in Forum
4. Where EGR valve connected?
A. Exhaust system and intake system
B. Crank case and intake system
C. Crank case and exhaust system
D. Exhaust system and catalytic converter
Discuss in Forum
5. How do we achieve near zero emission diesel engines?
A. Combo of PCV and EGR
B. Combo of EGR and SCR
C. Combo of PCV and 3 way catalytic connection
D. Combo of DPF and EGR
Discuss in Forum
6. Purging of the charcoal canister occurs when
A. Air flow from the fuel tank flows through the canister
B. Air flows from the float bowls through the canister
C. Air flows through the canister on its way to the intake manifold
D. Air flows through the canister on its way to the exhaust manifold
Discuss in Forum
7. Which of the following is one of the major exhaust emissions from CI engines compared to SI engines?
A. Oxides of nitrogen
B. Particulates
C. CO and CO2
D. Unburnt hydrocarbon
Discuss in Forum

Page 1 of 15

 1  23 »