I.C. Engine

A. directly proportional to diameter of its impellerB. inversely proportional to diameter of its impellerC. directly proportional to (diameter)2 of its impellerD. inversely proportional to (diameter)2 of its impeller

A. peak pressureB. rate of rise of pressureC. rate of rise of temperatureD. peak temperatureE. rate of rise of horse-power

A. Otto cycle is more efficient than the DieselB. Diesel cycle is more efficient’than OttoC. both Otto and Diesel cycles are, equally efficientD. compression ratio has nothing to do with efficiencyE. which is…

A. increaseB. decreaseC. remain sameD. increase upto certain limit and then decreaseE. decrease upto certain limit and then in-crease

A. exhaust will be smokyB. piston rings would stick into piston groovesC. exhaust temperature will be highD. engine starts overheatingE. scavenging occurs

A. 0.15 kgB. 0.2 kgC. 0.25 kgD. 0.3kgE. 0.35 kg

A. first a mild explosion followed by a bi explosionB. first a big explosion followed by a mil explosionC. both mild and big explosions occi simultaneouslyD. never occursE. unpredictable

A. 500- 1000°CB. 1000- 1500°CC. 1500-2000°CD. 2000-2500°CE. 2500-3000°C

A. 4 – 6 kg/cm2 and 200 – 250°CB. 6 – 12 kg/cm2 and 250 – 350°CC. 12 – 20 kg/cm2 and 350 – 450°CD. 20 – 30 kg/cm2 and 450 – 500°CE….