The pressure and temperature at the end of compression stroke in a petrol engine are of the order of___________________?
Answer: 6 – 12 kg/cm2 and 250 – 350°C
In case of gas turbines, the gaseous fuel consumption guarantees are based on________________?
Fuel oil consumption guarantees for I .C. engine are usually based on__________________?
Answer: high heat value of oil
All heat engines utilize_____________________?
Answer: low heat value of oil
The calorific value of gaseous fuels is expressed in terms of__________________?
Compression ratio of LC. engines is ___________________?
Answer: the ratio of volumes of air in cylinder before compression stroke and after compression stroke
Supercharging is the process of_____________________?
Answer: supplying the intake of an engine with air at a density greater than the density of the surrounding atmosphere
The fuel in diesel engine is normally injected at pressure of_________________?
The maximum temperature in the I.C. engine cylinder is of the order of ________________?
Crankcase explosion in I.C. engines usuall occurs as ___________________?
Answer: first a mild explosion followed by a bi explosion
The specific fuel consumption per BH hour for a petrol engine is approximately__________________?
The inlet value of a four stroke cycle I.C engine remains open for nearly___________________?
If one cylinder of a diesel engine receives more fuel than the others, then for that cylinder the________________?
Answer: scavenging occurs
It the temperature of intake air in IC engines is lowered, then its efficiency will_______________________?
For the same compression ratio_____________________?
Answer: Otto cycle is more efficient than the Diesel
As a result of detonation in an I.C. engine, following parameter attains very high value _____________________?
Answer: rate of rise of pressure
Most high speed compression engines operate on __________________?
Answer: Dual combustion cycle
Which of the following medium is compressed in a Diesel engine cylinder __________________?
In a typical medium speed, 4-stroke cycle diesel engine ___________________?
Answer: fuelinjection starts at 10° before to dead center and ends at 20° after tor dead center
In diesel engine the diesel fuel injected into cylinder would burn instantly at about compressed air temperature of____________________?