Question

What is the range of best operating rating temperature of I.C. engine?

(a) 106°F – 120°F

(b) 140°F – 200°F

(c) 106°F – 200°F

(d) 120°F – 140°F

I have been asked this question in exam.

I would like to ask this question from Cooling System topic in portion Fuel Supply and Cooling System of Farm Machinery

Answer 1

The correct answer is (b) 140°F – 200°F

To elaborate: For satisfactory performance of the engine, neither overheating nor over-cooling is desirable. Experiments have shown that best operating of I.C. engine lies between 140°F to 200°F depending upon types of engine and load conditions.