Fuels and Combustion multiple choice questions
Fuels and Combustion 1. The following is (are) used as additives for Compressed Ignition engine fuels. a) Amyl Nitrate b) Ethyl Thionitite c) Amyl Nitrite d) All of the above Answer: All of the above 2. In order to have good engine performance a) The fuel should have low boiling temperature for lower warm up period b) The percentage of volume evaporated at low temperatures should be small c) A rich mixture of air-fuel ratio of 12 to 13:1 is considered to be suitable for easy starting of the engine d) All of the above Answer: All of the above 3. The solid fuels can be used in Internal combustion engine only after their a) Solidification b) Liquefaction c) Gasification d) All of the above Answer: Gasification 4. Decomposition of higher hydrocarbon molecules into lower hydrocarbons having lower boiling temperatures is known as a) Polymerization b) Hydrogeneration c) Isomerization d) Cracking Answer: Cracking 5. The following is the desirable property (ies) of good Internal Combustion en