The ignition of the charge by some hot surface within the engine before the passage of spark is called Ignition delay Pre-ignition Detonation Auto-ignition TRUE ANSWER : ? YOUR ANSWER : ?
If the ratios of all the corresponding linear dimensions are equal, then the model and the prototype are said to have None of these Geometric similarity Dynamic similarity Kinematic similarity TRUE ANSWER : ? YOUR ANSWER : ?
The probability of knocking in diesel engines is increased by All of these Low volatility High self ignition temperature Higher viscosity TRUE ANSWER : ? YOUR ANSWER : ?
The ignition quality of diesel oil is expressed by Octane number Cetane number None of the listed here Calorific value TRUE ANSWER : ? YOUR ANSWER : ?
The knocking tendency in spark ignition engines may be decreased by Controlling the air-fuel mixture Controlling the ignition timing Controlling the exhaust temperature Reducing the compression ratio TRUE ANSWER : ? YOUR ANSWER : ?
The thermal efficiency of diesel engines on weak mixtures is Lower Unaffected Higher Dependent on other factors TRUE ANSWER : ? YOUR ANSWER : ?
Compression loss in I.C engines occurs due to Clogged air inlet slots Use of thick head gasket Leaking piston rings All of these TRUE ANSWER : ? YOUR ANSWER : ?
The method of determination of indicated power of a multi cylinder spark ignition engine is by the use of Morse test Heat balance test Motoring test Prony brake test TRUE ANSWER : ? YOUR ANSWER : ?
The specific fuel consumption of a petrol engine compared to diesel engine of same H.P. is More Same Less or more depending on operating conditions Less TRUE ANSWER : ? YOUR ANSWER : ?
The _________ engines can work on very lean mixture of fuel. Both (A) and (B) None of these Spark ignition Compression ignition TRUE ANSWER : ? YOUR ANSWER : ?