11. In Spark Ignition (SI) engines, the possibility of knocking can be reduced by A. Increasing compression ratio B. Decreasing compression ratio C. Increasing the coolant temperature D. Advancing the spark timing Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option B No explanation is given for this question Let's Discuss on Board
12. . . . . . . . . to control surface ignition and sparkpluq fouling. A. Detergents B. Phosphorus compounds C. Anti-icers D. All are correct Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option B No explanation is given for this question Let's Discuss on Board
13. The important components of the fuel injection system are A. Injection pump B. Filters C. Injectors D. All are correct Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option D No explanation is given for this question Let's Discuss on Board
14. Oxides of nitrogen are formed when the products of combustion are heated above A. 300°F B. 1000°F C. 3000°F D. 5000°F Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option C No explanation is given for this question Let's Discuss on Board
15. For diesel fuels the pour point for special grade is A. 6°C B. 20°C C. 100°C D. 106°C Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option A No explanation is given for this question Let's Discuss on Board
16. Drain plug is fitted at the . . . . . . . . portion of the tank. A. Lowest B. Highest C. Middle D. None of these Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option A No explanation is given for this question Let's Discuss on Board
17. Cetane A. Helps detonation B. Is a paraffin C. Determines the efficiency D. None of these Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option B No explanation is given for this question Let's Discuss on Board
18. What is the remedy of "Thick gasket used for mounting fuel pump to block"? A. Tighten these fully B. Use thinner gasket C. Replace with new one D. None of these Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option B No explanation is given for this question Let's Discuss on Board
19. The air-fuel mixture required at the time of engine start is A. Rich mixture B. Stoichiometric mixture C. Lean mixture D. None of these Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option A No explanation is given for this question Let's Discuss on Board
20. Which of the following is the type of pumps used? A. Mechanical fuel pump B. Electrical fuel pump C. Both the fuel pumps D. None of these Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option C No explanation is given for this question Let's Discuss on Board
