Session 4: Cooling System
Unit 3: Major Systems and Components of anAutomobile
Textual Question-Answers
Check Your Progress
A. Fill in the blanks
1. The cooling system removes excess the engine ……………. fromAns: heat
2. Cooling ……………….. temperature. a constant engine operating
Ans: maintains
3. The objective of cooling is to reduce ………………..
Ans: overheating
4. Liquid cooling is employed in most …………… engines.
Ans: automobile
B. Multiple choice question
1. Which of the following types of cooling systems is used in amotorcycle?
(a) Air cooling system
(b) Water cooling system
(c) Both (a) and (b)
(d) None of the above
Ans: (c) Both (a) and (b)
2. The cooling fan is …………..
(a) Driven by belt and pulleys
(b) Fitted between the engine and the radiator
(c) Driven from the camshaft
(d) All of the above
Ans: (d) All of the above
3. In water cooling, the water in the jacket obtains heat from thecylinder due to …………..
(a) conduction
(b) convection
(c) radiation
(d) All of the above
Ans: (a) conduction
C. Short answer questions
1. How does a cooling system work?
Ans: A cooling system works by removing excess heat from the engine. The coolant absorbs heat from the engine and carries it to the radiator, wherethe heat is released to the air, thus maintaining the engine at a safe operatingtemperature.
2. What is the role of coolants?
Ans: Coolants absorb heat from the engine, prevent overheating, protect engine parts from corrosion, and help maintain a constant engine operatingtemperature.
