Mechanical Engineering MCQs

A. Yes
B. No
C. To some extent
D. Unpredictable

A. Same
B. Less
C. More
D. More or less depending on power rating

A. Spark
B. Injected fuel
C. Heat resulting from compressing air that is supplied for combustion
D. Ignition

A. Net efficiency
B. Efficiency ratio
C. Relative efficiency
D. Overall efficiency

A. Increase
B. Decrease
C. Remain same
D. Unpredictable

A. Speed
B. Temperature
C. Volume of cylinder
D. M.e.p. and i.h.p.

A. Opens at 20° before top dead center and closes at 35° after the bottom dead center
B. Opens at top dead center and closes at bottom dead center
C. Opens at 10° after top dead center and closes 20° before the bottom dead center
D. May open or close anywhere

A. 6 kg/cm
B. 12kg/cmz
C. 20 kg/cmz
D. 27.5 kg/cmz

A. 2%
B. 4%
C. 8%
D. 14%

A. Increase
B. Decrease
C. Be independent
D. May increase or decrease depending on other factors