Home > Auto / Motor Mechanic > Quizzes > IC Engine Practice Test: Heat Rejection and Cooling
IC Engine Practice Test: Heat Rejection and Cooling
Fast practice, instant feedback. Timer auto-submits when time’s up.
Avg score: 64% • Most missed: “As the cool mixture is inducted into the engine cylinder the temperature rises r…”
Heat Rejection and Cooling topics include: Heat rejection, engine heat transfer and cooling systems, liquid cooling systems and air cooled systems. Heat rejection is the process of transferring heat energy from a cool side to a warm side, plus the work done by the compressor. A cooling system transfers energy from a cool side to a warm side, along with the power needed to transfer the energy.  Heat rejection can be achieved in several ways, including: Air cooled: Air passes over a coil or channel containing fluid, transferring heat from the coil to the air. Water cooled: A spray system... Show more
IC Engine Practice Test: Heat Rejection and Cooling
Time left 00:00
25 Questions

1. The weight per B.P. of air-cooled engine is ___________ than that of water-cooled engine.
2. The heat flow to water jackets, on average, is about ____________ for small engines.
3. In thermo-syphon system, the radiator should be kept well above the engine, to provide a height for natural circulation.
4. If the engine is overcooled some of the heat which could be used to expand the gases will be lost.
5. Air cooling system is used in small engines whose application gives extreme importance to weight such as aircraft engines.
6. When the work is done to blow or pump the fluid, it is said to be ____________ convection.
7. The control of cooling system in air-cooled system is not easier than in water-cooled system.
8. The transfer of heat takes place due to difference in temperature and from higher temperature to lower temperature.
9. At the end of the induction stroke the temperature is that of clearance gases.
10. In thermo-syphon cooling system, the cooling only depends on temperature and is independent of the engine speed.
11. In liquid cooling, the liquid becomes heated in its passage through the jackets and is itself cooled by means of an air-cooled radiator system.
12. The turbocharged diesel engine requires ____________ cooling air than naturally aspired diesel engines.
13. During compression process the temperature ____________ and attains its maximum value at the end of combustion process.
14. Anti-freeze mixtures are added to fuel in extreme winter seasons to lower its freezing temperatures below the danger point.
15. What are the various methods used for circulating water around the cylinder and cylinder heads?
16. Which of the following are commonly used in anti-freeze materials?
17. There is a danger of coolant leakage in air-cooled systems.
18. ____________ is the transfer of heat from one part of a substance to another part of the same substance.
19. In the case of air cooling, the boundary layer as on the gas side offers great resistance, but the effect of this is compensated largely by providing more surface areas by way of cooling pins.
20. The heat flow to water jackets, on an average, is about ____________ for large engines.
21. Gas temperature remains at a higher average with increased speed.
22. In air-cooled engine, high mean cylinder temperatures mean reduced carbon deposits on the combustion chamber wall.
23. A hot-spot outside the combustion chamber may be sufficient to cause pre-ignition.
24. The volumetric efficiency of an air-cooled engine is higher due to high cylinder head temperatures.
25. ____________ is the transfer of heat within a fluid by mixing of one portion of fluid with another.

⚡ Recently practiced quizzes in this topic
Live quiz activity
ASE A9 Light Vehicle Diesel Engines Test Automobile Engineering: Suspension System Automobile Engineering: Automotive Electrical System ASE A5 Brake Systems Practice Test Automobile Engineering Practice Test: Transmission System - Clutches, Gear Box, Universal Joints and Differential Motor Mechanic Exam SkillsUSA Automotive Quizbowl IC Engine Practice Test: Electronic Injection Systems Auto Mechanics Tools Automechanics
 
❤ If you liked Fatskills, consider supporting us by checking out The Life Manuals You Never Got.

🌈  Our mission is to help improve your scores in any subject and exam withonline quizzes, practice tests, study guides, & advice for students. Since 2018.
About | Explore | User Guide | Topics | Subjects | Doubt Solver | Career Aptitude Test | Answers | Free Tools | OSHA Basics Quiz | What Should We Know?
Privacy | Terms |
Without work one finishes nothing. - Ralph Waldo Emerson
© 2026 Fatskills.com

All trademarks, logos and brand names are the property of their respective owners. All company, product and service names used in this website are for identification purposes only. Use of these names, trademarks and brands does not imply endorsement.