Which of the following is normally not found in both the S.I. (petrol) &
C.I. (diesel) engines?
(A) Air filter
(B) Fuel injector
(C) Exhaust silencer
(D) Battery

1 Answer

Answer :

Option B

Related questions

Description : The air-fuel ratio of the petrol engine is governed by A. fuel pump B. governor C. carburetor D. injector

Last Answer : ANSWER : C

Description : In a diesel engine the high temperature needed to ignite the fuel is achieved by – (1) using heat from exhaust (2) the battery (3) compressing air in the cylinders (4) an electrical spark

Last Answer : (3) compressing air in the cylinders Explanation: Diesel engines use the heat of compressed air to ignite the fuel (intakes air, compresses it, then injects fuel). Diesel engines need high compression ratios to generate the high temperatures required for fuel auto ignition.

Description : In a diesel engine the high temperature needed to ignite the fuel is achieved by (1) using heat from exhaust (2) the battery (3) compressing air in the cylinders (4) an electrical spark

Last Answer : compressing air in the cylinders

Description : Scavenging air in diesel engine means a. air used for combustion under pressure b. forced air for cooling the cylinder c. burnt air containing products of combustion d. air used for forcing burnt gases out of the engines cylinder during the exhaust stroke

Last Answer : ANSWER d. air used for forcing burnt gases out of the engines cylinder during the exhaust stroke

Description : The air fuel ratio in petrol engines is controlled by a. valve opening / closing b. governing c. carburetion d. scavenging

Last Answer : ANSWER c. carburetion

Description : Supercharging is essential in A. aircraft engines B. petrol engines C. gas turbines D. diesel engines

Last Answer : ANSWER : A

Description : Which Has More Efficiency: Diesel Engine Or Petrol Engines?

Last Answer : Off course Diesel engine has the better efficiency out of two.

Description : Submarines move under water. They have engines that run on (1) Petrol and oxygen (2) Diesel (3) Batteries (4) Steam

Last Answer : Diesel

Description : Describe air fuel- ratio requirements for diesel engines at no load to full load.

Last Answer : Irrespective of load at any given speed, an approximately constant supply of air enters the cylinder. With change in load, the quantity of fuel injected is changed varying the air fuel ratio. The ... engine always designed to operate with an excess air of 15 to 40% depending upon the application

Description : For same power output and same r, as compared to 2- stroke engines, four stroke SI engines have (a) Higher fuel consumption (b) Lower thermal efficiency (c) Highest exhaust temperatures (d) Higher thermal efficiency

Last Answer : Ans :d

Description : Octane number of petrol normally used in petrol engines is of the order of a. 20-30 b. 40-60 c. 60-70 d. 80-90

Last Answer : ANSWER d. 80-90

Description : Steps taken by the Government of India to control air pollution include (a) compulsory PUC (Pollution under control) certification of petrol driven vehicles which tests for carbon monoxide and ... trucks (d) compulsory mixing of 20% ethyl alcohol with petrol and 20% biodiesel with diesel.

Last Answer : (a) compulsory PUC (Pollution under control) certification of petrol driven vehicles which tests for carbon monoxide and hydrocarbons

Description : Pick out the wrong statement. (A) Benzopyrene which causes cancer is present in traces in tobacco, charcoal & petrol driven automobile exhaust (B) NO2 is capable of penetrating the troposphere and ... at all produced during combustion of sulphur bearing fuels as all the sulphur is oxidised to SO2

Last Answer : (D) H2S is not at all produced during combustion of sulphur bearing fuels as all the sulphur is oxidised to SO2

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 : The usual types of diesel injectors are : a) single hole injector b) multi hole injector c) long stem injector d) all of the mentioned

Last Answer : Answer: d Explanation: The types of diesel injectors are single hole injector, multi hole injector and long stem injector.

Description : If one cylinder of a diesel engine receives more fuel than others , then for that cylinder the A. exhaust will be smoky B. scavenging occurs C. exhaust temperature will be high D. engine starts overheating

Last Answer : ANSWER : B

Description : State the functions of fuel system and exhaust system of a diesel power station.

Last Answer : Fuel system: It supplies fuel to engine for combustion purpose. It consists of Fuel Pump: - It supplies fuel to engine for combustion purpose. Strainer: - Are provided to remove suspended impurities and ... most of the noise. Chimney:- To exhaust gases in the atmosphere as high as possible. 

Description : Which of the following has the highest viscosity of all (at a given temperature)? (A) Naphtha (B) Fuel oil (C) Light diesel oil (D) Petrol

Last Answer : (B) Fuel oil

Description : Which of the following contains maximum sulphur? (A) Diesel (B) Petrol (C) Kerosene (D) Fuel oil

Last Answer : (D) Fuel oil

Description : Dip stick used for measuring the level of petro fuels (e.g. petrol, diesel, fuel oil etc.) in the storage tank is usually made of (A) Brass (B) Copper (C) High carbon steel (D) Aluminium

Last Answer : (A) Brass

Description : __________ is used as jet engine fuel. (A) Petrol (B) Diesel (C) Kerosene (D) LPG

Last Answer : (C) Kerosene

Description : Why do diesel fuel truck engines seem to last longer?

Last Answer : The primary reason these engines last longer is the nature of diesel fuel as a lubricant. In addition, these engines typically operate at lower revolutions per minute, further extending their life.

Description : Inhalation of lead compounds present in automobile exhaust (using leaded petrol) causes (A) Blood poisoning (B) Anaemia (C) Nervous system disorder (D) All (A), (B) & (C)

Last Answer : (D) All (A), (B) & (C)

Description : Pick out the wrong statement (A) Low ozone layer thickness in polar regions is due to cold climatic conditions (B) Amount of unburnt hydrocarbons emitted by two stroke petrol engine is more ... can enter the blood stream & the digestive system/ lungs and is responsible for causing Minamata disease

Last Answer : (D) Mercury as a pollutant can enter the blood stream & the digestive system/ lungs and is responsible for causing Minamata disease

Description : Higher efficiency in the combustion of solid fuel cannot be achieved by (A) Proper fuel preparation (B) Keeping the flue gas exhaust temperature very high (C) Adopting efficient-fuel firing technique & equipment (D) Supplying correct quantity of combustion air

Last Answer : (B) Keeping the flue gas exhaust temperature very high

Description : Based on the exhaust gas analysis, a controller maintains stoichiometric combustion __ a. by commanding a servo motor to adjust the combustion air damper b. By commanding servo motor to adjust the fuel supply valve. c. Both a. & b. d. None of the above.

Last Answer : c. Both a. & b.

Description : __________ prohibits the use of alcohols directly in petrol engines. (A) Low octane number (B) High cost & availability (C) Low flash point (D) Low calorific value

Last Answer : (B) High cost & availability

Description : Where is the fuel injector regulator tbi in a 1991 cchevrolet van g20 5.7l ?

Last Answer : Take off the upper intake, the regulator is on the backside of the fuel injector unit spider.

Description : Which of the following is not related to spark ignition engine? a. fuel injector b. spark plug c. flywheel d. distributor

Last Answer : ANSWER a. fuel injector

Description : How to Change a Fuel Injector

Last Answer : How to Change a Fuel Injector Is your engine flooded with gas and your motor sputtering? It might be because your fuel injector is dirty or plugged up. Although it's not a very common dilemma ... arises, do not neglect this simple maintenance trick. Otherwise, you'll expect plenty of problems soon.

Description : (i) Describe the principle of mechanical governor in fuel injection pump. (ii) State four types of injector nozzles

Last Answer : (i) Working Principal of mechanical governor of FIP: The working principle of mechanical governor is illustrated in figure. When the engine speed tends to exceed the limit the weights fly apart. This causes ... ) Multi-hole nozzle 3) Long stem nozzle 4) Pintle nozzles 5) Pintuax nozzles 

Description : Illustrate with neat sketch the construction of fuel injector

Last Answer : Diesel Fuel Injector: The injector assembly consists of - i) a needle valve ii) a compression spring iii) a nozzle iv) an injector body. When the fuel is supplied to lift the injection pump it ... and hence the valve opening pressure is controlled by adjusting the screw provided at the top.  

Description : Describe the working of fuel injector with neat sketch

Last Answer : Fuel Injector: The injector assembly consists of - i) a needle valve ii) a compression spring iii) a nozzle iv) an injector body When the fuel is supplied to lift the injection ... spring tension and hence the valve opening pressure is controlled by adjusting the screw provided at the top.

Description : Describe the working of electronic fuel injector with the help of suitable sketch.

Last Answer : Working of Electronic Fuel Injector: In MPFI system, Top feed fuel Injector is used. These injectors are solenoid-operated valves that are opened and closed by means of electric pulses from the ECU. The ... Pintle and discharge opening to form a fine spray pattern that has a cone shape.

Description : Can petrol be used as a replacement for diesel fuel?

Last Answer : Petrol should not be used as a replacement for diesel fuel, as it can cause damage to diesel engines.

Description : What is the difference between petrol and diesel fuel?

Last Answer : Petrol is a lighter, more volatile fuel than diesel fuel, which is a heavier, more viscous fuel.

Description : What is the quality rating for diesel fuel, similar to the octane number for petrol?

Last Answer : Catane number

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 : A fuel of cetane number 40 has the same ignition quality as a mixture of a) 40% cetane and 60% alpha methyl naphthalene b) 40% alpha methyl naphthalene and 60% cetane c) 40% petrol and 60% diesel d) 40% diesel and 60% petrol

Last Answer : Answer: a Explanation: A fuel of cetane number 40 has the same ignition quality as a mixture of 40% cetane and 60% alpha methyl naphthalene as cetane number is counted on cetane percentage.

Description : A fuel of an octane number rating of 75 matches in knocking intensity as a mixture of a) 75% iso-octane and 25% normal heptane b) 75% normal heptane and 25% iso-octane c) 75% petrol and 25% diesel d) 75% diesel and 25% petrol

Last Answer : Answer: a Explanation: None.

Description : The self-ignition temperature of diesel oil compared to petrol is a. higher b. lower c. same d. depends on the quality of fuel

Last Answer : ANSWER a. higher

Description : The fuel that is used in modern submarines is – (1) Nuclear fuel (2) Petrol (3) Coal (4) Diesel

Last Answer : (1) Nuclear fuel Explanation: Nuclear power is now used in all large submarines, but due to the high cost and large size of nuclear reactors, smaller submarines still use diesel-electric propulsion. ... needs. The US Navy, drench Navy, and the British Royal Navy operate only nuclear submarines.

Description : Write the values of boiling temperature for cetane(diesel).iso-octane(petrol), Butane, Propane an methane fuel and write effect of it on its system.

Last Answer : Write the values of boiling temperature for cetane(diesel).iso-octane(petrol), Butane, Propane an methane fuel and write effect of it on its system.

Description : The fuel that is used in modern submarines is (1) Nuclear fuel (2) Petrol (3) Coal (4) Diesel

Last Answer : Nuclear fuel

Description : Could I make a silencer for my air canon?

Last Answer : answer:Having a longer barrel would reduce noise. Whether or not that will effect the trajectory and speed would have to be tested. If you plan on building something as you described be sure that you are ... caught, however a stroke of bad luck can make you wish you had not attempted it at all.

Description : How often to change fuel filter on BMW X5 diesel?

Last Answer : Need answer

Description : The fuel in diesel engine is normally injected at pressure of a. 5-10 kg/cm2 b. 20-25 kg/cm2 c 60-80 kg/cm2 d. 90-130 kg/cm2

Last Answer : ANSWER d. 90-130 kg/cm2

Description : State the functions of following elements: i) Diesel engine system ii) Air intake system iii) Engine exhaust system iv) Engine starting system.

Last Answer : i) Diesel engine system:-  Four strokes Two strokes ii) Air intake system:- Air intake system is provided to supply air to engine cylinder for fuel combustion.  iii) Engine exhaust system ... provided to rotate the engine initially until the firing starts and engine run under its own power. 

Description : Pick out the wrong statement. (A) Catalytic converter is fitted in automobiles to reduce carbon monoxide concentration in exhaust emissions (B) Inhalation of pollutant carbon monoxide results ... D) Decomposition of plants containing chlorophyll is a natural source of carbon monoxide in atmosphere

Last Answer : (C) Sulphur dioxide is the main pollutant emitted from the exhaust of petrol driven automobiles