Q. Which of the following statement is correct regarding petrol engines?

View solution

Q. Supercharging __________ the power developed by the engine.

View solution

Q. Uranium has isotopes

View solution

Q. The colour of exhaust from diesel engine is generally

View solution

Q. In compression ignition engines, swirl denotes a

View solution

Q. A mixture containing 65% of iso-octane and 35% of normal heptane will have

View solution

Q. Which of the following statement is wrong ?

View solution

Q. The maximum propulsive efficiency of a turbo-jet engine is at a speed of

View solution

Q. In order to mix air and petrol in the required proportion and to supply it to the engine during suction stroke, then __________ is employed.

View solution

Q. The indicated power for multi-cylinder engine will be same as that of a single cylinder engine.

View solution

Q. In order to prevent knocking in spark ignition engines, the charge away from the spark plug should have

View solution

Q. The size of a reactor at which the chain reaction can be initiated (i.e. when system becomes critical) with just enough fissionable material (called critical mass of fuel) is known as critical size of reactor.

View solution

Q. The mechanical efficiency (ηm) of the engine is given by

View solution

Q. A gas engine has a swept volume of 300 cm³ and clearance volume of 25 cm³. Its volumetric efficiency is 0.88 and mechanical efficiency is 0.90. The volume of the mixture taken in per stroke is

View solution

Q. The correct sequence of the decreasing order of brake thermal efficiency of the three given basic types of engines is

View solution

Q. The engines in which the combustion of fuel takes place inside the engine cylinder are called internal combustion engines.

View solution

Q. A fuel will detonate less if it has higher self ignition temperature.

View solution

Q. The combustion in compression ignition engines is

View solution

Q. Which of the following fuel detonates readily ?

View solution

Q. If the speed of the engine is increased, the indicated power will

View solution