Session 6: Tuning of Cooling System of an Engine
Unit 5: Regular Maintenance of an Engine
Textual Question-Answers
Check Your Progress
A. Fill in the blanks
1. ………….. is used for cooling the vehicle.
Ans: Coolant
2. Normal temperature of an engine is in the range of ……….. and………….
Ans: 80°C, 90°C
3. The percentage of heat removed by cooling system is ………..%.
Ans: 30
B. Multiple choice questions
1. Cooling system in a car protects the engine from…………….
(a) overheating
(b) water heating
(c) overflow
(d) None of the above
Ans: (a) overheating
2. Which of the following is not a part of the cooling system?(a) Water jacket
(b) Water pump
(c) Radiator and radiator cap
(d) Axle
Ans: (d) Axle
3. Cooling fan belt tension are……………(a) 6-7 mm as deflection
(b) 7-10 mm as deflection
(c) 10-60 mm as deflection
(d) All of the above
Ans: (b) 7-10 mm as deflection
C. Answer the following questions
1. Why is cooling of an engine necessary?
Ans: Cooling of an engine is necessary to remove excess heat producedduring combustion, prevent overheating, maintain correct operatingtemperature, avoid engine damage, and ensure efficient and smooth engineperformance.
2. What are the steps to be followed while checking the functioningof the cooling system?
Ans: The steps include checking coolant level in the radiator and reservoir, inspecting hoses and pipes for leakage, checking radiator cap condition, examining water pump operation, ensuring proper fan belt tension, andverifying cooling fan and thermostat functioning.
