Description : The ignition stroke and expansion stroke are together called
Last Answer : power stroke.
Description : In the expansion stroke of a petrol engine, the piston is pushed with a great stroke. Why?
Last Answer : When the petrol-air mixture is ignited, carbon dioxide, carbon monoxide and water vapour expands suddenly. This exerts a great force on the piston.
Description : Give reason: The wheel makes another half rotation after the expansion stroke of steam engine.
Last Answer : Due to inertia of the crankshaft, the wheel makes another half rotation and completes one cycle.
Description : Give reason: After the expansion stroke of a steam engine, steam condenses into water.
Last Answer : As steam expands, it loses its kinetic energy and gets condensed into water.
Description : Give reason: Steam exerts great pressure on the walls of the piston during expansion stroke.
Last Answer : As steam occupies much larger volume than the same amount of water, it exerts great pressure on the walls of the piston.
Description : In four stroke engine which of the following is also known as power stroke a. Suction stroke b. Compression stroke c. Expansion stroke d. Exhaust stroke (Ans:c) Measurements of fuel and air ... into IC engine,___________its efficiency A. increase B. decrease C. does not alter D. unpredictable on
Last Answer : ANSWER : B
Description : In two stroke engine, which of the following functions are performed at the same time? a. Compression and exhaust b. Intake and Expansion c. Intake and exhaust d. Intake and compression (Ans:c)
Last Answer : The compression ratio in a Compression Ignition (CI) engine is generally in between a. 8 to 13 b. 14 to 23 c. 20 to 28 d. 25 to 32 (Ans:b)
Description : Fuel is injected into the cylinder at the end of ______________ stroke. a) suction b) compression c) expansion d) exhaust
Last Answer : Answer: b Explanation: Fuel is injected into the cylinder at the end of compression stroke and not at suction or expansion stroke.