A. supplying the intake of an engine with air at a density greater than the density of the surrounding atmosphere
B. providing forced cooling air
C. injecting excess fuel for raising more load
D. supplying compressed air to remove combustion products fully
E. raising exhaust pressure
Related Mcqs:
- Pick up the wrong statement about supercharging __________________?
A. supercharging reduces knocking in diesel engines
B. there can be limited supercharging in petrol engines because of detonation
C. supercharging at high altitudes is essential
D. supercharging results in fuel economy
E. supercharging is essential in aircraft engines - The reason for supercharging in any engine is to________________?
A. increase efficiency
B. increase power
C. reduce weight and bulk for a given out-put
D. effect fuel economy
E. none of the above - Supercharging is essential in_____________?
A. diesel engines
B. gas turbines
C. petrol engines
D. aircraft engines
E. marine engines - Polymerisation is a chemical process in which molecules of a compound become________________?
A. larger
B. slowed down
C. smaller
D. liquid
E. gaseous - In a cycle, the spark lasts roughly for ____________________?
A. 1 sec
B. 0.1 sec
C. 0.01 sec
D. 0.001 sec
E. 0.0001 sec - Which of the following is not an interns combustion engine___________________?
A. 2-stroke petrol engine
B. 4-stroke petrol engine
C. diesel engine
D. gas turbine
E. steam turbine - In loop scavenging, the top of the piston is________________?
A. flat
B. contoured
C. slanted
D. depressed
E. convex shaped - Ignition lag is__________________?
A. the time taken by fuel after injection (before top dead center) to reach upto auto-ignition temperature
B. time before actual fuel injection and the pump plunger starts to pump fuel
C. time corresponding to actual injection and top dead center
D. time corresopnding to actual ingition and top dead center
E. none of the above - The specific gravity of diesel oil Is_________________?
A. 1
B. 0.7
C. 0.85
D. 0.5
E. 1.25 - The cooling water requirement for diesel engine is of the order of________________?
A. 0.2 to 1.0 liter per minute per h.p.
B. 1 to 3 liters per minute per h.p.
C. 5 to 10 liters per minute per h.p
D. 10 to 20 liters per minute per h.p.
E. 20-30 liters per minute per h.p
