a) Etienne Lenoir b) Nikolaus Otto c) John Barber d) John Stevens Answer: b Explanation: The first ...
View QuestionWhat is the correct sequence of strokes in four stroke cycle engines?
a) Compression, Suction, Exhaust, Power b) Power, Suction, Exhaust, Compression c) Suction, Compression, Power, Exhaust d) Suction, Power, ...
View QuestionWho found the working principle of compression ignition engine in 1982?
a) Rudolf Diesel b) Johannes Gutenberg c) Otto von Guericke d) Edwin Beard Budding Answer: a Explanation: ...
View QuestionA four-cylinder tractor engine develops 50 KW at 3000 engines when tested on a prony dynamometer on brake arm length of 96 cm. What is the torque?
a) 190.98 Nm b) 159.15 Nm c) 186.49 Nm d) 155.28 Nm Answer: b Explanation: P ...
View QuestionWhich of the following is a point property?
a) Pressure b) Mass c) Density d) Pressure and density Answer: b Explanation: Efficiency ratio is the degree ...
View QuestionThe end of the connecting rod which fits over the gudgeon pin is known as __________ connecting rod.
a) Small end b) Big end c) Piston d) Cylinder block Answer: a Explanation: The end which ...
View QuestionWhenever a system undergoes a cyclic change, the algebraic sum of work transfer is proportional to the algebraic sum of heat transfer as work and heat are mutually convertible. Which law of thermodynamics suggests this?
a) Zeroth law of thermodynamics b) Second law of thermodynamics c) Third law of thermodynamics d) First law ...
View QuestionIf a diesel engine has a compression ratio of 24 and the cut-off takes place at 5% of stroke, the air standard efficiency will be ___________
a) 60.66% b) 64.50% c) 66.60% d) 65.40% Answer: c Explanation: Here, r = V1/V2 = ...
View QuestionIf L is the stroke and N is the rpm, mean piston speed of two stroke engine is _______
a) LN b) LN/2 c) 2LN d) 2LN/3 Answer: c Explanation: The mean piston speed is the ...
View QuestionThe mechanical efficiency of a single cylinder four-stroke engine is 80%. The frictional power is estimated to be 25. Calculate the indicated and brake power developed by the engine.
a) 106 kW;120 kW b) 125 kW;100 kW c) 120 kW;106 kW d) 100 kW;125 kW Answer: ...
View Question