MCQs 1: For the same size and weight, a two stroke engine as compared to four stroke engine will generate power_________________?
MCQs 2: If diesel is fed by mistake in the oil tank of a petrol engien, then engine will________________?
MCQs 3: An engine has a normal speed of 960 r.p.m. and no load speed of 1000 r.p.m. The speed droop of governor will be about___________________?
MCQs 4: In isochronous governing, speed droop is_______________?
MCQs 5: Method of governing used in diesel engine is__________________?
MCQs 6: Method of governing used in petrol engine is________________?
MCQs 7: The termal efficiency of a petrol engine at design load is around_________________?
MCQs 8: As the number of cylinders in multi-cylinder engine increases, the power to weight ratio_______________?
MCQs 9: All the four operations in two stroke engine are performed in following number of revolutions of crank shaft______________________?
MCQs 10: In the case of petrol engine at maximum output, the percentage of CO in exhaust gases is ____________________?
MCQs 11: In a diesel engine, injection pressure developed by injector is of the order of______________?
MCQs 12: In precombustion chamber in diesel engine________________?
The shape and layout of the pistion crown, the inlet port, and the valve produce the turbulent effect of fuel mixture
Fuel is injected into an auxiliary chamber that is separated from the cylinder by an orifice or throat
Only a part of air charge is contained in an auxiliary chamber in which the fuel starts to burn with insufficient air which due to explosion tendency
There are no valves
MCQs 13: The thermal efficiency of a semi-diesel cycle having fixed compression ratio and fixed quantity of heat, with increase in pressure ratio will_______________?
increase
decrease
remain unaffected
increase/decrease depending upon engine capacity
first increase and then decrease
MCQs 14: In the case of compression ignition engine, the %age of CO in exhaust gases is________________?
MCQs 15: A two stroke engine is usually identified by__________________?
size of flywheel
weight of engine
type of lubrication system
absence of valves
location of fuel tank
MCQs 16: A two stroke crank compressed engine has following ports in the cylinder_______________?
suction port and exhaust port
transfer port only
suction port and transfer port
transfer port and exhaust port
suction port, exhaust port and transfer port
MCQs 17: Scavenging air is supplied to a two-stroke engine at a density greater than that of atmosphere. This means the engine is__________________?
MCQs 18: In turbulence chamber in diesel engine__________________?
the shape and layout of the piston crown, the inlet port, and the valve produce the turbulent effect of fuel mixture
fuel is injected into an auxiliary chamber that is separated from the cylinder by an orifice or throat
only a part of air charge is contained in an auxiliary chamber in which the fuel starts to burn with insufficient air which due to explosion tendency
there are no valves
fuel is partly burnt by spark
MCQs 19: If petrol is used in a diesel engine, then______________?
higher knocking will occur
efficiency will be low
low power will be produced
black smoke will be produced
lot of fuel will remain unburnt
MCQs 20: Deposition of carbon in petrol engine cylinder would result in increase of__________________?
MCQs 21: The part load efficiency of a carburettor is,___________________?
MCQs 22: The basic requirement of a good combustion chamber is___________________?
high compression ratio
low compression ratio
low volumetric efficiency
minimum turbulence
high power output and high thermal efficiency
MCQs 23: The following type of carburettor is preferred_______________?
MCQs 24: The theoretically correct mixture of air and petrol is approximately ________________?
MCQs 25: Carburretion is done to________________?
feed petrol into cylinder
govern the engine
break up and mix the petrol with air
heat up the charge to cylinder
scavenge the cylinder
MCQs 26: With increase in engine speed, the ignition of spark in petrol engine has to be __________________?
MCQs 27: Pick up false statement?
For petrol and large gas engines, quantity governingds preferred
In quantity governing, air fuel ratio is almost constant and quantity of charge is changed depending on load
In hit and miss governing, fuel supply is completely cut off during one or more number of cycles
In quality governing, quantity of fuel is varied to suit the load and total charge of air is varied
For close regulation of speed, combination of both quality and quantity governing is used
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