Top 250+ Solved Internal Combustion Engines (I.C. Engines) MCQ Questions Answer
Q. A two-stroke engine can be identified by
a. cooling system
b. lubrication system
c. absence of valves
d. piston size
Q. Advantage of two-stroke engine is
a. more uniform torque
b. lighter flywheel
c. no valves
d. all of the above
Q. Charge pressure at the inlet port of a two-stroke engine is
a. 20 bar
b. vacuum
c. atmospheric
d. higher than atmospheric
Q. The most perfect method of scavenging is
a. cross scavenging
b. uniflow scavenging
c. loop scavenging
d. reverse flow scavenging
Q. Two-stroke SI engines suffer from
a. fuel loss
b. idling difficulty
c. both (a) and (b) together
d. none of the above
Q. At the same speed two-stroke engine of the same size as a four-stroke engine will develop
a. same power
b. half the power
c. twice the power
d. four times the power
Q. Two wheelers without deflector type piston use
a. loop scavenging
b. unifow scavenging
c. reverse flow scavenging
d. cross scavenging
Q. Crankcase scavenged engines have delivery ratio of
a. greater than 1
b. less than 1
c. equal to 1
d. none of the above
Q. In a diesel engine, the fuel is ignited by
a. spark
b. injected fuel
c. heat resulting from compressing air that is supplied for combustion
d. ignitor
Q. Limitations of air cooling systems are
a. applicable only to large engines
b. cooling is fast
c. higher working temperature compared to water cooling
d. all of the above
Q. In a naturally aspirated diesel engine, the air is supplied by
a. a supercharger
b. a centrifugal blower
c. a vacuum chamber
d. an injection tube
Q. The measurement of frictional power by Willans line is applicable only to
a. SI engines at a particular speed
b. CI engines at a particular speed
c. any engine at a particular speed only
d. none of the above
Q. Morse test is applicable only to
a. single cylinder SI engines
b. single cylinder CI engines
c. multicylinder CI engines
d. single and multicylinder SI and CI engines