The maximum temperature in the I.C. engine cylinder is of the order of 2000-2500°C 500-1000°C 1500-2000°C 1000-1500°C TRUE ANSWER : ? YOUR ANSWER : ?
The mean effective pressure obtained from engine indicator indicates the Minimum pressure Maximum pressure developed Instantaneous pressure at any instant Average pressure TRUE ANSWER : ? YOUR ANSWER : ?
The specific fuel consumption of a petrol engine compared to diesel engine of same H.P. is Same More Less Less or more depending on operating conditions TRUE ANSWER : ? YOUR ANSWER : ?
Fuel oil consumption guarantees for I .C. engine are usually based on High heat value of oil Net calorific value of oil Low heat value of oil Calorific value of fuel TRUE ANSWER : ? YOUR ANSWER : ?
Scavenging is usually done to increase Fuel consumption Power output Thermal efficiency Speed TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following statement is correct regarding normal cetane? It has long carbon chain structure It is a standard fuel used for knock rating of diesel engines Its chemical name is normal hexadecane All of these TRUE ANSWER : ? YOUR ANSWER : ?
The theoretically correct mixture of air and petrol is 25 : 1 15 : 1 20 : 1 10 : 1 TRUE ANSWER : ? YOUR ANSWER : ?
The cetane (Câ‚₆H₃₄) which is a straight chain paraffin, is assigned a cetane number of 100 50 120 TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following statement is correct regarding petrol engines? The fuel is first evaporated after passing through a carburettor and is mixed with air before ignition The fuel supplied to the engine cylinder is mixed with necessary amount of air and the mixture in ignited with the help of a spark plug A fine fuel spray mixed with air is ignited by the heat of compression which is at a high pressure All of these TRUE ANSWER : ? YOUR ANSWER : ?
The ignition quality of petrol is expressed by All of these Cetane number Calorific value Octane number TRUE ANSWER : ? YOUR ANSWER : ?