a) It stores energy during power stroke and returns back the same energy during the idle strokes, providing ...
View QuestionA diesel engine transmits 25 KW at the end of the crankshaft, moving at 1650 rev/min, find the torque exerted by the piston.
a) 148.90 Newton-metre b) 144.75 Newton-metre c) 150.75 Newton-metre d) 120.10 Newton-metre Answer: b Explanation: Power(W) ...
View QuestionA six-cylinder 4-stroke engine has bore diameter 11 cm and stroke length 12.2 cm running at 2800 rev/min consumes 455m2 of air per hour. What would be the volumetric efficiency of the engine?
A six-cylinder 4-stroke engine has bore diameter 11 cm and stroke length 12.2 cm running at 2800 rev/min ...
View QuestionA high-speed diesel engine operating at 2000 rev/min has a single cylinder. During the compression stroke, the fuel injection starts 20° before TDC and ends at TDC. Determine the duration the fuel injection takes place.
a) 1/600 seconds b) 2/248 seconds c) 1/60 seconds d) 2/319 seconds Answer: a Explanation: Revolution/sec ...
View QuestionWhich of the following is not an example of drawbar dynamometer?
a) Spring dynamometer b) Hydraulic dynamometer c) Electrical dynamometer d) Strain gauge dynamometer Answer: c Explanation: The ...
View QuestionThe correct way of representing the compression ratio is __________
a) C.R.=\(\frac{Total \, cylinder \, volume}{Clearance \, Volume} \) b) C.R.=\(\frac{Clearance \, Volume}{Total \, Clearance \, Volume} ...
View QuestionThe device in which air-fuel mixture is prepared away from the cylinder of an engine is known as __________
a) Lubricant b) Delivery valve c) Nozzle holder d) Carburettor Answer: d Explanation: The process of preparing ...
View QuestionThe process of removal of burnt or exhaust gases from the engine cylinder is known as ___________
a) Tappet b) Skirt c) Scavenging d) Suction Answer: c Explanation: Entire burnt gases do not out ...
View QuestionWhich engine is designed to convert chemical energy of heavier fuel oil into mechanical energy?
a) Diesel engine b) Petrol engine c) Injector d) Tappet clearance Answer: a Explanation: The injected fuel ...
View QuestionWhat per cent of supplied energy is converted into mechanical work by an IC engine?
a) 10%-20% b) 30%-40% c) 50%-60% d) 70%-80% Answer: b Explanation: An IC engine on average ...
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