Mechanical Engineering MCQs

A. Reduce cost
B. Improve surface finish
C. Prevent clogging
D. Reduce wear and eliminate scuffing

A. V-type
B. In-line
C. Vertical
D. Horizontal

A. Cast iron
B. Aluminium
C. Phosphor bronze
D. Babbitt

A. Compression ring
B. Oil ring
C. Scrapper ring
D. Groove ring

A. compact design requiring lesser space
B. improved distribution of air to cylinder
C. casting less liable to distortion
D. reduced torsional vibration because of shorter crankshaft

A. Peroxides, aldehydes and ketones
B. Peroxides, aldehydes, oxides and sul-phides
C. Aldehydes, oxides and ketones
D. Ketones and sulphur compounds

A. Higher
B. Lower
C. Same
D. Depends on size of engine

A. Inject fuel in cylinder
B. Supply fuel when carburettor fails
C. Pump fuel so that it reaches carburettor (to improve thermal efficiency)
D. Does not exist

A. 0.1 to 0.2 mm
B. 0.2 to 0.4 mm
C. 0.45 to 0.6 mm
D. 0.6 to 0.8 mm

A. 0.001 sec
B. 0.002 see
C. 0.01 sec
D. 0.05 sec