Description : Briefly explain the construction of a petrol engine.
Last Answer : A petrol engine consists of an air tight piston fitted inside a cylinder. The piston can move smoothly inside the cylinder. The cylinder has two valves - an inlet valve and an outlet valve ... with a carburetor where air and petrol are mixed in proper proportion before letting into the cylinder.
Description : Briefly explain the working of a diesel engine.
Last Answer : Construction: A diesel engine consists of an airtight piston fitted inside a cylinder. The piston is free to move inside the cylinder. The cylinder has two valves - an inlet valve and an outlet ... there is an injunction pump. Working: The working of diesel engine consists of five strokes.
Description : Briefly explain the working of a steam engine.
Last Answer : Description: A steam engine consists of a cylinder fitted with an airtight piston. The piston is connected to a crankshaft by means of a connecting rod. A boiler is connected to the cylinder ... to a condenser through the outlet valve. The condenser is connected to the boiler through a pump.
Description : Explain the principle of working of a diesel or petrol engine.
Last Answer : Chemical change of liquid fuels like petrol or diesel when under goes combustion produces large volume of gases and exerts pressure. This is the basis of working of petrol or diesel engine.
Description : Mention the five stages in the working of a petrol engine.
Last Answer : a) Intake stroke c) Ignition stroke e) Exhaust strokeb) Compression stroke d) Expansion stroke
Description : ptimum working temperature for petrol engine is about ∙ 88-90°c ∙ 71-82°c ∙ 60-70°c ∙ 90-100°c
Last Answer : ∙ 71-82°c
Description : Describe working principle of 4 – Stroke Petrol (Engine) with sketch
Last Answer : Working of four stroke petrol engine: 1. Suction stroke: During this stroke, inlet valve is open and exhaust valve is closed. The piston moves from TDC to BDC and crank shaft rotates ... gases outside the combustion chamber. Crankshaft rotates by two complete revolutions through 7200 .
Description : Briefly explain the construction and working of an induction coil.
Last Answer : Construction: An induction coil consists of a primary P having few turns of thick insulated copper wire wound over a soft iron core connected to a battery. It also has a secondary coil S of larger number ... repeats. During the make break of the circuit, large e.m.f is induced in the secondary coil.
Description : Explain the procedure of Morse Test” to be conducted for four cylinder petrol engine.
Last Answer : Morse Test: Used for multi cylinder engines Procedure: 1. The engine is run at the required speed and the torque is measured. 2. One cylinder is cut out by shorting the plug if an S.I. engine is under test. 3. ... -B4 Total IP of Engine = I1+I2+I3+I4 Friction Power F.P. = I.P - B.P
Description : Explain with sketch working of electronic petrol injection system. State its advantages over carbureted fuel system.
Last Answer : Working of Electronic Fuel injection system: Because mechanical injection systems have limited adjustments to develop the optimal amount of fuel into an engine that needs to operate under a variety of different ... (acceleration). 7. Compact design of fuel supply system. 8. Modular design
Description : The part of a petrol engine in which petrol vapour and air are mixed is
Last Answer : carburetor.
Description : The basis of diesel/petrol engine is Chemical change of
Last Answer : liquid when under goes
Description : List the differences between petrol engine and diesel engine.
Last Answer : Petrol Engine 1. Petrol vapour is used as fuel 2. Petrol engines are spark ignition engines. It requires a spark plug. 3. Cost of petrol is comparatively high. 4. Expansion of gaseous products with ... 6. Compression of air is in the ratio 4:1 to 25:1 4. Expansion against constant pressure.
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 : What happens if you use a petrol with a lower octane rating than recommended for your engine?
Last Answer : Using a petrol with a lower octane rating than recommended for your engine can cause knocking or pinging during combustion, which can damage the engine over time.
Description : Can premium petrol be used in any petrol engine?
Last Answer : Premium petrol can be used in most petrol engines, but may not provide any significant performance benefits in engines that are not designed for high-octane fuels.
Description : Can E85 petrol be used in any petrol engine?
Last Answer : E85 petrol can only be used in certain types of engines that are designed to run on high-ethanol blends.
Description : Can E10 petrol be used in any petrol engine?
Last Answer : E10 petrol can be used in most petrol engines, but may not be suitable for use in older or high-performance engines.
Description : Can biofuels be used in any petrol engine?
Last Answer : Some biofuels, such as ethanol blends, can be used in most petrol engines. However, some types of biofuels may require engine modifications or a special type of engine.
Last Answer : E10 petrol can be used in most petrol engines, but some older or high-performance engines may require a different fuel type. It's important to check your vehicle's owner's manual for guidance.
Description : Can LPG be used in any petrol engine?
Last Answer : No, not all petrol engines are designed to run on LPG. Vehicles must be equipped with a special LPG conversion kit in order to use LPG as a fuel.
Description : Can you use biodiesel in a petrol engine?
Last Answer : No, biodiesel is designed for use in diesel engines and can cause damage if used in petrol engines.
Last Answer : No, biodiesel
Description : What is the speed of the piston in the cylinder of a petrol engine ?
Last Answer : The speed of the piston in the cylinder of a petrol engine is also the speed of the alternator.
Last Answer : Discover petrol engine (Nicholas Auto)
Last Answer : Discover Petrol Injil: Nicholas Auto 7
Last Answer : Petrol engine was invented in 18th century.
Last Answer : ( a) Check the spark at the plug point. (B) Check whether the carburetor is running on petrol.
Description : Air fuel ratio at which a petrol engine cannot work is A. 8:1 B. 12:1 C. 15:1 D. 20:1 and less
Last Answer : ANSWER : D
Description : Air fuel ratio for idling speed of a petrol engine is approximately A. 1:1 B. 5:1 C. 20:1 D. 10:1
Description : The theoretically correct air fuel ratio of a petrol engine is of the order of A. 6:1 B. 10:1 C. 15:1 D. 20:1
Last Answer : ANSWER : C
Description : The actual volume of fresh charge admitted in 4-stroke petrol engine is A. equal to stroke volume B. equal stroke volume and clearance volume C. less than stroke volume D. more than stroke volume
Description : The fuel air ratio in a petrol engine fitted with suction carburetor, operating with dirty air filter as compared to clean filter will be A. higher B. lower C. remain unaffected D. unpredictable
Last Answer : ANSWER : A
Description : A diesel engine compared to petrol engine, running at full load is A. less efficient B. equally efficient C. more efficient D. other factors will decide it
Description : The specific fuel consumption of a petrol engine compared to diesel engine of same H.P is A. same B.more C. less D. unpredictable
Last Answer : ANSWER : B
Description : The air-fuel ratio of the petrol engine is governed by A. fuel pump B. governor C. carburetor D. injector
Description : The air requirement of a petrol engine during starting compared to the theoretical air requirement for complete combustion is A. more B.unpredictable C. same D. less
Description : The air requirement of a petrol engine during starting compared to theoretical air required for complete combustion is a. more b. less c. same d. may be more or less depending on engine capacity
Last Answer : ANSWER b. less
Description : Air fuel ratio at which a petrol engine cannot work is a. 8:1 b. 10:1 c. 20:1 and less d. 15:1
Last Answer : ANSWER c. 20:1 and less
Description : If diesel is used in a petrol engine a. engine will not run b. engine detonates c. engine gives smoke d. engine knocks
Last Answer : ANSWER a. engine will not run
Description : The back pressure of petrol engine is usually a. 1 ata b. 1.2 ata c. 0.8 ata d. 2 ata.
Last Answer : ANSWER b. 1.2 ata
Description : For low load operation more economical engine is a. petrol engine b. diesel engine c. muticylinder engine d. two stroke engine
Last Answer : ANSWER b. diesel engine
Description : If petrol is used in a diesel engine a. higher knocking will occur b. efficiency will be low c. low power will be obtained d. black smoke will be produced
Last Answer : ANSWER a. higher knocking will occur
Description : In a petrol engine, which of the following gas gets exhausted out without burning and without transformation? a. CO2 b. CO c. O2 d. N2
Last Answer : ANSWER d. N2
Description : The tendency of a petrol engine to knock increases by a. supercharging b. scavenging c. increasing the engine horse power d. reducing the spark advance
Last Answer : ANSWER a. supercharging
Description : The theoretically correct air fuel ratio for petrol engine is of the order of a.6 : 1 b. 9 : 1 c. 12 : 1 d. 15 : 1
Last Answer : Answer d. 15:1
Description : Which of the following is not an internal combustion engine? a. petrol engine b. steam turbine c. diesel engine d. gas turbine
Last Answer : ANSWER b. steam turbine
Description : The specific fuel consumption per BHP hour for petrol engine is approximately a. 0.1 kg b. 0.2 kg c. 0.25 kg d. 0.35 kg
Last Answer : ANSWER c. 0.25 kg
Description : A spark plug is used in a. petrol engine b. diesel engine c. gas engine d. steam engine
Last Answer : ANSWER a. petrol engine
Description : The 'four stroke petrol engine' is based on – (1) Carnot-cycle (2) Otto-cycle (3) Diesel-cycle (4) Boyle's-cycle
Last Answer : (2) Otto-cycle Explanation: A four-stroke engine (also known as four-cycle) is an internal combustion n engine in which the piston completes four separate strokes—intake, compression, power, and exhaust—during two separate revolutions of the engine's crankshaft, and one single thermodynamic cycle.