64 + Interview Questions in Fuels in Automotive Engine Design Page 1 InterviewSolution

1.	Which material is not used as oil pan gaskets?(a) Cork(b) Felcoid(c) Asbestos(d) FelcopreneI got this question during an interview.This key question is from Leakage Preventers topic in chapter Fuels, Intake System & Leakage Preventers of Automotive Engine Design
Answer» Right answer is (c) Asbestos For explanation: CORK, Fecoid, and Felcoprene are the material used as an oil pan gasket.The materials of these gaskets should be resistant to the CHEMICAL reactions and withstand HIGH TEMPERATURES.

Discussion

2.	Which type of gaskets are treated to withstand anti-freezers?(a) Pump gasket(b) Manifold gasket(c) Oil pan gasket(d) Cylinder head gasketI got this question in an online interview.My question is taken from Leakage Preventers in chapter Fuels, Intake System & Leakage Preventers of Automotive Engine Design
Answer» CORRECT answer is (a) Pump gasket To ELABORATE: Several MATERIALS are available for pump gaskets such as ASBESTOS, karropak, felcoid, ETC, they are treated to withstand oil, water, petrol, and anti-freezers.

Discussion

3.	Which type of gasket is made of perforated steel sandwiched between two treated asbestos sheets?(a) Shim type(b) Embossed steel(c) Shimbestos(d) FelbestosThis question was posed to me in unit test.This interesting question is from Leakage Preventers topic in chapter Fuels, Intake System & Leakage Preventers of Automotive Engine Design
Answer» The CORRECT answer is (d) Felbestos The explanation: Felbestos type of gasket is MADE of PERFORATED steel sandwiched between two treated asbestos sheets and cork, Fecoid and Felcoprene are the material used as oil PAN gasket.

Discussion

4.	Which type of gasket is the combination of a thin steel heat shield and a specially treated metal-reinforced asbestos?(a) Shim type(b) Embossed steel(c) Shimbestos(d) Metal sandwichThis question was posed to me in an interview.Enquiry is from Leakage Preventers in division Fuels, Intake System & Leakage Preventers of Automotive Engine Design
Answer» Right choice is (c) Shimbestos To explain I would SAY: Shimbestos type of gaskets is the COMBINATION of a THIN STEEL HEAT shield on one side and highly resilient, a specially treated metal-reinforced asbestos on the top of the side.

Discussion

5.	Which type of gasket is used in passenger cars?(a) Shim type(b) Embossed steel(c) Shimbestos(d) Metal sandwichI had been asked this question in a job interview.My query is from Leakage Preventers topic in portion Fuels, Intake System & Leakage Preventers of Automotive Engine Design
Answer» Correct answer is (d) Metal sandwich To elaborate: Metal sandwich type is made of either COPPER and asbestos or STEEL and asbestos; mainly used on passenger cars, trucks, etc. There is a chance of leakage of CHARGE, so TWO metal SHEETS are integrated on either side of the gasket.

Discussion

6.	What is the combustion temperature experienced by the gasket between the cylinder head and engine block in a petrol engine?(a) more than 1100°C(b) less than 700°C(c) more than 2400°C(d) less than 200°CI got this question in final exam.This key question is from Leakage Preventers topic in portion Fuels, Intake System & Leakage Preventers of Automotive Engine Design
Answer» Right choice is (a) more than 1100°C For EXPLANATION: The combustion pressure EXPERIENCED by the GASKET between cylinder head and ENGINE block in a petrol engine is 700KPa and it should withstand the TEMPERATURE more than 1100°C.

Discussion

7.	Which type of gasket is used on I-head engines?(a) Metal sandwich-type(b) Shim type(c) Embossed steel(d) Both Shim or embossed steel typeI had been asked this question in an online interview.Question is from Leakage Preventers in section Fuels, Intake System & Leakage Preventers of Automotive Engine Design
Answer» Correct option is (d) Both Shim or embossed STEEL type The best explanation: Embossed steel or shim type is generally used on the I-head engine, METAL SANDWICH type is MADE of either copper and ASBESTOS or steel and asbestos; mainly used on passenger cars, trucks, etc.

Discussion

8.	What is the combustion pressure experienced by the gasket between cylinder head and engine block in a turbocharged diesel engine?(a) 1500KPa(b) 450KPa(c) 2000KPa(d) 700KPaI got this question during an interview.My question is based upon Leakage Preventers topic in chapter Fuels, Intake System & Leakage Preventers of Automotive Engine Design
Answer» The correct choice is (c) 2000KPa For explanation I would say: The combustion PRESSURE experienced by the gasket between CYLINDER head and engine block for turbo-charged diesel engine it is 2000KPa. Since then the air is force INJECTED, HIGH pressure and temperature is generated.

Discussion

9.	What is the combustion pressure experienced by the gasket between the cylinder head and engine block in a petrol engine?(a) 1500KPa(b) 450KPa(c) 2000KPa(d) 700KPaThe question was posed to me during an online interview.My doubt is from Leakage Preventers topic in section Fuels, Intake System & Leakage Preventers of Automotive Engine Design
Answer» Right answer is (d) 700KPa For EXPLANATION: The combustion pressure EXPERIENCED by the gasket between cylinder head and ENGINE BLOCK in a petrol engine is 700KPa and for turbo-charged DIESEL engine it is 2000KPa.

Discussion

10.	Cork is made of which natural resource?(a) Seeds(b) Animal fat(c) Fossils(d) Bark of OakI had been asked this question in examination.My doubt is from Leakage Preventers in division Fuels, Intake System & Leakage Preventers of Automotive Engine Design
Answer» The correct answer is (d) Bark of Oak For explanation: Cork is one of the oldest GASKET materials obtained from the bark of oak and pine trees and oil-resistant SYNTHETIC RUBBER GASKETS are frequently used in oil pan corner joints.

Discussion

11.	Which gaskets are frequently used in oil pan corner joints?(a) Oil-resistant synthetic rubber gasket(b) Fibers of asbestos(c) Cork(d) Heated corkThe question was asked in an online quiz.This question is from Leakage Preventers in division Fuels, Intake System & Leakage Preventers of Automotive Engine Design
Answer» The correct choice is (a) Oil-RESISTANT synthetic rubber gasket To explain: Oil-resistant synthetic rubber gaskets are frequently used in oil pan CORNER joints. The material of these gaskets should be resistant to the CHEMICAL REACTIONS.

Discussion

12.	Which component is used to provide a tight-fitting joint between Cylinder and cylinder head?(a) Revet(b) Casting(c) Welding(d) GasketI got this question during an interview.I would like to ask this question from Leakage Preventers topic in section Fuels, Intake System & Leakage Preventers of Automotive Engine Design
Answer» The CORRECT choice is (d) Gasket The best I can explain: GASKETS are USED to provide a tight-fitting joint between Cylinder and cylinder head, between crank-case and oil PAN, between the cylinder block and manifolds.

Discussion

13.	Which of the mentioned below is not the material of gasket?(a) Cork(b) PVC(c) Asbestos(d) RubberI had been asked this question in a national level competition.The origin of the question is Leakage Preventers topic in division Fuels, Intake System & Leakage Preventers of Automotive Engine Design
Answer» RIGHT OPTION is (B) PVC To elaborate: Cork, Asbestos, and Rubber all the material USED for different engine gasket, whereas PVC i.e., Poly-Vinyl Chloride is a material used in WATER pipes.

Discussion

14.	Modern engines have which valve to direct exhaust gas?(a) Heat risers(b) Thermal valve(c) Thermostatic heat riser(d) Static valveThe question was asked in homework.My question is taken from Intake System topic in chapter Fuels, Intake System & Leakage Preventers of Automotive Engine Design
Answer» RIGHT choice is (c) Thermostatic HEAT RISER To explain: Modern engines have a thermostatic heat riser VALVE to direct exhaust gas and flange is the PART of the manifold that is connected to the Cylinder head.

Discussion

15.	The exhaust manifold is designed to withstand what?(a) Temperature(b) Gas(c) Heat(d) ContractionI have been asked this question during an online interview.The above asked question is from Intake System in section Fuels, Intake System & Leakage Preventers of Automotive Engine Design
Answer» The correct option is (c) Heat For explanation I would say: Exhaust MANIFOLD is connected to the Cylinder head of the ENGINE, exhaust manifolds are usually made of cast IRON material and the exhaust manifold is designed to withstand heat. Exhaust manifold has to RESULT in BETTER scavenging.

Discussion

16.	The surface of the exhaust manifold is made smooth to minimize the restriction of what?(a) Exhaust gas(b) Temperature(c) Heat(d) ContractionI had been asked this question in an interview for job.My doubt stems from Intake System topic in section Fuels, Intake System & Leakage Preventers of Automotive Engine Design
Answer» RIGHT answer is (a) Exhaust gas To explain: Rough interior surfaces of the manifold runners will increase resistance to the mixture flow and the surface of the exhaust manifold is MADE SMOOTH to minimize the RESTRICTION of exhaust gas.

Discussion

17.	Exhaust manifold is connected to which part of the engine?(a) Cylinder head(b) Engine block(c) Gasket(d) MufflerI have been asked this question in examination.I'd like to ask this question from Intake System topic in portion Fuels, Intake System & Leakage Preventers of Automotive Engine Design
Answer» CORRECT choice is (a) Cylinder head The explanation is: Exhaust manifold is CONNECTED to the Cylinder head of the engine; exhaust manifolds are usually made to GIVE high EFFICIENCY and absorb the noise of high-pressure GAS.

Discussion

18.	Exhaust manifolds are usually made of what material?(a) Copper(b) Chromoly(c) Mild steel(d) Cast ironThis question was addressed to me in examination.I'd like to ask this question from Intake System in portion Fuels, Intake System & Leakage Preventers of Automotive Engine Design
Answer» The correct CHOICE is (d) Cast IRON The explanation: Exhaust manifold is connected to the Cylinder head of the engine, exhaust manifolds are USUALLY MADE of cast iron material and the exhaust manifold is designed to withstand HEAT.

Discussion

19.	The manifold must be larger enough to allow sufficient flow for what?(a) Max power(b) Max emission(c) Min emission(d) Lower torqueThe question was asked in exam.I'm obligated to ask this question of Intake System in division Fuels, Intake System & Leakage Preventers of Automotive Engine Design
Answer» The correct choice is (a) Max power To explain: The INLET manifold carries the air-fuel mixture from the carburetor to the CYLINDERS and the manifold Inner surface MUST be very SMOOTH such that it should not hold any CHARGE around its surface.

Discussion

20.	In modern automotive engines, the length of the intake track can be varied by which technology?(a) VLIM(b) VRIS(c) VIPS(d) Both VLIM and VRISI have been asked this question in homework.My doubt stems from Intake System topic in division Fuels, Intake System & Leakage Preventers of Automotive Engine Design
Answer» Correct answer is (d) Both VLIM and VRIS For EXPLANATION I would say: In modern AUTOMOTIVE ENGINES, the length of the intake track can be VARIED by both VLIM and VRIS technology, VLIM stands for Variable Length Intake MANIFOLD.

Discussion

21.	Rough interior surfaces of the manifold runners will increase what to the mixture flow?(a) liquidity(b) Velocity(c) Smoothness(d) ResistanceI have been asked this question in examination.The question is from Intake System topic in division Fuels, Intake System & Leakage Preventers of Automotive Engine Design
Answer» The correct choice is (d) Resistance The best I can EXPLAIN: Rough INTERIOR surfaces of the manifold runners will increase resistance to the mixture FLOW and the SURFACE of the EXHAUST manifold is made smooth to minimize the restriction of exhaust gas.

Discussion

22.	In the petrol engine, the inlet manifold carries the air-fuel mixture from which part to the cylinder?(a) Air filter(b) Fuel injector(c) Fuel pump(d) CarburetorThis question was addressed to me by my school teacher while I was bunking the class.My enquiry is from Intake System topic in division Fuels, Intake System & Leakage Preventers of Automotive Engine Design
Answer» CORRECT CHOICE is (d) Carburetor To explain: The INLET manifold carries the air-fuel mixture from the carburetor to the cylinders and the manifold must be LARGER enough to allow sufficient FLOW for maximum power.

Discussion

23.	What is the another name of Manifold passages?(a) Riser(b) Sprout(c) Guideways(d) RunnerThis question was posed to me in an interview for job.This interesting question is from Intake System in division Fuels, Intake System & Leakage Preventers of Automotive Engine Design
Answer» Right option is (d) Runner The explanation: Manifold passages are also called a runner. In modern AUTOMOTIVE engines, the length of the intake track can be VARIED by both VLIM and VRIS TECHNOLOGY, VLIM stands for Variable Length Intake Manifold, VRIS stands for Variable Resonance INDUCTION SYSTEM.

Discussion

24.	Manifolds are connected to which part of the engine?(a) Cylinder(b) Cylinder head(c) Gasket(d) Engine blockThe question was asked in homework.I want to ask this question from Intake System topic in chapter Fuels, Intake System & Leakage Preventers of Automotive Engine Design
Answer» Correct choice is (b) Cylinder HEAD Best EXPLANATION: Manifolds are connected to the cylinder head of the engine. Manifolds have flanges at the END and it is bolted to the engine with the GASKET in between.

Discussion

25.	Which are two Hydrocarbons present in LPG?(a) Butane and Pentane(b) Methane and ethane(c) Butane and propane(d) Pentane and HexaneI got this question by my college professor while I was bunking the class.The doubt is from Alternative Fuels in section Fuels, Intake System & Leakage Preventers of Automotive Engine Design
Answer» Right choice is (C) Butane and propane To explain I WOULD SAY: The liquefied petroleum gas is a by-product of the fractional distillation of petrol, CONSISTING mainly of Butane and propane, used as ENGINE fuel.

Discussion

26.	What does inlet manifold carry to the engine?(a) Air(b) Fuel(c) Oxygen+ fuel(d) Air+ fuelI have been asked this question in my homework.This intriguing question comes from Intake System topic in portion Fuels, Intake System & Leakage Preventers of Automotive Engine Design
Answer» CORRECT option is (d) AIR+ fuel The explanation is: Manifolds are the separate sets of PIPES attached to the cylinder HEAD. Inlet manifold carry the air-fuel mixture and exhaust manifold carry the exhaust gases.

Discussion

27.	The LPG is a by-product of the fractional distillation of which fuel?(a) Coal(b) Kerosene(c) Diesel(d) PetrolThe question was asked in semester exam.My enquiry is from Alternative Fuels topic in chapter Fuels, Intake System & Leakage Preventers of Automotive Engine Design
Answer» The correct choice is (d) Petrol The BEST I can EXPLAIN: The liquefied petroleum gas is a by-product of the fractional distillation of petrol, consisting MAINLY of Butane and propane, used as engine FUEL.

Discussion

28.	Bio-diesel is made of what residuals?(a) Plant oil(b) Animal fat(c) Plant oil and animal fat(d) Edible oilThis question was addressed to me in semester exam.This interesting question is from Alternative Fuels in portion Fuels, Intake System & Leakage Preventers of Automotive Engine Design
Answer» The correct choice is (C) Plant oil and ANIMAL fat To ELABORATE: Bio-diesel is an alternative to standard diesel fuel, and is made from biological SOURCES instead of petroleum, it is made from plant OILS or animal fat.

Discussion

29.	LNG consist of more than 98% of which gas?(a) Propane(b) Ethane(c) Methane(d) ButaneI got this question by my college director while I was bunking the class.This interesting question is from Alternative Fuels in section Fuels, Intake System & Leakage Preventers of Automotive Engine Design
Answer» Correct option is (C) Methane Easiest explanation: During the liquefaction process, NATURAL gas is COOLED below its boiling point removing most of the water vapor, BUTANE, propane, etc., so that LNG is more than 98% methane.

Discussion

30.	What is the reason for ethanol to be difficult to ignite at a lower temperature?(a) High combustion(b) Aroma(c) structure of hydrocarbon(d) Less volatileI got this question in an international level competition.My question is based upon Alternative Fuels topic in portion Fuels, Intake System & Leakage Preventers of Automotive Engine Design
Answer» The correct OPTION is (d) Less volatile To explain: Pure ethanol is less volatile than petrol due to which it becomes DIFFICULT to IGNITE at lower temperatures, which means, starting a cold engine during WINTER is difficult.

Discussion

31.	Compared to petrol, CNG combustion produces 25% less of what gas?(a) NOx(b) H(c) CO(d) CO2I have been asked this question at a job interview.The question is from Alternative Fuels in chapter Fuels, Intake System & Leakage Preventers of Automotive Engine Design
Answer» Right ANSWER is (d) CO2 Explanation: Compared to petrol, COMPRESSED natural gas produces about 25% less CO2 and due to HIGH levels of methane, it gives the highest HC EMISSION.

Discussion

32.	The Natural Gas consists of 95% of which gas?(a) Methane(b) Butane(c) Propane(d) EthaneI had been asked this question in examination.Enquiry is from Alternative Fuels topic in division Fuels, Intake System & Leakage Preventers of Automotive Engine Design
Answer» The correct choice is (a) Methane Easy explanation: The natural gas, like PETROLEUM, comes from UNDERGROUND reserves. It consists, mainly of 95% of methane and the remaining 5% comprises butane, propane, and ETHANE with a small amount of water vapor.

Discussion

33.	Which Ethanol is not used in light-duty vehicles?(a) E95(b) E15(c) E10(d) E85I got this question in semester exam.My question is based upon Alternative Fuels in division Fuels, Intake System & Leakage Preventers of Automotive Engine Design
Answer» Right CHOICE is (a) E95 To elaborate: E10, E15, and E85 are USED for light-duty vehicles and E95 is used in Heavy-duty vehicles e.g., TRUCKS and buses. Hence, E95 is the right answer.

Discussion

34.	Which alcohol is electrically conducting and used as fuel?(a) Methanol(b) Ethanol(c) Propanol(d) ButanolThe question was posed to me by my school principal while I was bunking the class.This key question is from Alternative Fuels topic in chapter Fuels, Intake System & Leakage Preventers of Automotive Engine Design
Answer» The correct option is (b) Ethanol The best I can explain: Ethanol is electrically CONDUCTING, many sensors and electrical devices are connected to the ENGINE. This can CAUSE a PROBLEM with some electric fuel pumps.

Discussion

35.	Due to which alcohol corrosion of rubber and aluminum parts occur?(a) Methanol(b) Ethanol(c) Propanol(d) ButanolThe question was posed to me in a job interview.This intriguing question originated from Alternative Fuels topic in section Fuels, Intake System & Leakage Preventers of Automotive Engine Design
Answer» The CORRECT option is (b) Ethanol Explanation: CORROSION of rubber, magnesium, and aluminum parts occurs at HIGHER ethanol percentages, and also it is ELECTRICALLY conducting, this can cause a problem with some electric FUEL pumps.

Discussion

36.	Flame of which alcohol is difficult to be seen in daylight?(a) Methanol(b) Ethanol(c) Propanol(d) ButanolThe question was posed to me in unit test.The question is from Alternative Fuels in division Fuels, Intake System & Leakage Preventers of Automotive Engine Design
Answer» Right option is (a) Methanol The EXPLANATION is: Flame of methanol fire is difficult to be seen in DAYLIGHT, LIKE LPG, petrol or other fuels its flame doesn’t produce any color, due to which it MAY not be detected.

Discussion

37.	Which alcohol is used in racing car engine due to its high anti-knock rating?(a) Methanol(b) Ethanol(c) Propanol(d) ButanolI got this question during an interview for a job.My question is taken from Alternative Fuels topic in chapter Fuels, Intake System & Leakage Preventers of Automotive Engine Design
Answer» Correct option is (a) Methanol The best I can explain: Alcohols have a high anti-knock rating, due to which, especially methanol, have been used in racing CAR engines. FLAME of methanol FIRE is difficult to be seen in daylight, due to which it may not be detected.

Discussion

38.	Which are the two main alcohols used in the engine as a fuel?(a) Butanol and methanol(b) Propanol and butanol(c) Ethanol and propanol(d) Methanol and EthanolI have been asked this question in a national level competition.Question is taken from Alternative Fuels in section Fuels, Intake System & Leakage Preventers of Automotive Engine Design
Answer» CORRECT ANSWER is (d) Methanol and ETHANOL The explanation: Alcohols have been used as engine fuels for a long TIME, methanol and ethanol are the two main alcohols used in the engine as a fuel.

Discussion

39.	What is the specific gravity value of gasoline?(a) 0.3 to 0.6(b) 1 to 15(c) 0.7 to 0.78(d) 0.9 to 1.5I got this question in a national level competition.Origin of the question is Properties of Conventional Fuels in portion Fuels, Intake System & Leakage Preventers of Automotive Engine Design
Answer» CORRECT option is (c) 0.7 to 0.78 The BEST I can explain: The specific gravity value of GASOLINE is 0.7 to 0.78, the specific heat value of gasoline is 2.1 KJ/Kg^oC and the calorific value of Diesel is 50 MJ/Kg.

Discussion

40.	What is the calorific value of Diesel?(a) 40 MJ/Kg(b) 10 MJ/Kg(c) 50 MJ/Kg(d) 30 MJ/KgI have been asked this question during an interview for a job.Asked question is from Properties of Conventional Fuels in division Fuels, Intake System & Leakage Preventers of Automotive Engine Design
Answer» RIGHT OPTION is (c) 50 MJ/Kg For explanation: The specific HEAT VALUE of gasoline is 2.1 KJ/Kg^oC and the calorific value of Diesel is 50 MJ/Kg. Calorific value is the measure of heat contained in the fuel by measuring the heat PRODUCED by the complete combustion of a specified quantity of it.

Discussion

41.	What is the specific heat valueof gasoline?(a) 2.1 KJ/g^oC(b) 4.1 KJ/Kg^oC(c) 2.1 KJ/Kg^oC(d) 4.1 KJ/g^oCThis question was posed to me in an interview for internship.Asked question is from Properties of Conventional Fuels topic in division Fuels, Intake System & Leakage Preventers of Automotive Engine Design
Answer» The correct answer is (c) 2.1 KJ/Kg^oC The explanation: The specific HEAT VALUE of gasoline is 2.1 KJ/Kg^oC and the calorific value of Diesel is 50 MJ/Kg. Specific heat CAPACITY is the amount of heat energy required to raise the temperature of a SUBSTANCE per UNIT of mass.

Discussion

42.	Which of the mentioned below is not a material of Bio-fuel?(a) Soya bean(b) Rapeseed(c) Paddy(d) JatrophaI have been asked this question in an interview.My enquiry is from Properties of Conventional Fuels topic in division Fuels, Intake System & Leakage Preventers of Automotive Engine Design
Answer» Correct option is (C) Paddy The best I can explain: Soya BEAN, rapeseed, and JATROPHA SEEDS are all the sources from which biofuel can be extracted. Whereas Paddy can’t be used as bio-fuel.

Discussion

43.	What does M85/E15 represent?(a) 85% methylene and 15%ethlyene(b) 85% methanol and 15% ethanol(c) 85% methyl and 15%ethyl(d) 85% methyl and 15%ethlyeneI got this question in a national level competition.My question comes from Properties of Conventional Fuels topic in section Fuels, Intake System & Leakage Preventers of Automotive Engine Design
Answer» The correct ANSWER is (b) 85% METHANOL and 15% ethanol Explanation: M85/E15 represents that the mixture of gasoline contains 85% methanol and 15% ethanol. Methanol and Ethanol are two MAIN constituents is gasoline.

Discussion

44.	What does LPG stand for?(a) Liquefied petroleum gas(b) Lithium petroleum gas(c) Liquefied potash gas(d) Lithium potash gasThis question was addressed to me in an online quiz.The query is from Properties of Conventional Fuels topic in division Fuels, Intake System & Leakage Preventers of Automotive Engine Design
Answer» Correct OPTION is (a) Liquefied PETROLEUM GAS For explanation: LPG stands for Liquefied petroleum gas, the petroleum gas is compressed at a very high temperature and pressure to OBTAIN it in liquid form, and then it is stored in the container.

Discussion

45.	What does LNG stand for?(a) Lithium nitrogen gas(b) Liquefied natural gas(c) Lithium natural gas(d) Liquefied nitrogen gasI have been asked this question in my homework.I need to ask this question from Properties of Conventional Fuels in section Fuels, Intake System & Leakage Preventers of Automotive Engine Design
Answer» The correct option is (b) Liquefied natural gas The best explanation: LPG STANDS for Liquefied PETROLEUM gas, LNG stands for Liquefied natural gas and CNG stands for Compressed natural gas. HENCE, Liquefied natural gas is the right answer.

Discussion

46.	What does CNG stand for?(a) Common natural gas(b) Compressed natural gas(c) Common nitrogen gas(d) Compressed nitrogen gasI got this question by my college director while I was bunking the class.This intriguing question originated from Properties of Conventional Fuels in chapter Fuels, Intake System & Leakage Preventers of Automotive Engine Design
Answer» The CORRECT answer is (B) Compressed natural GAS Easiest explanation: LPG stands for LIQUEFIED petroleum gas; LNG stands for Liquefied natural gas and CNG stands for Compressed natural gas. HENCE, Compressed natural gas is the right answer.

Discussion

47.	The aromatic content in the fuel has corrosive action of the rubber in fuel and has what?(a) Low boiling point(b) High boiling point(c) Low melting point(d) High freezing pointI have been asked this question during an online exam.My question is based upon Properties of Conventional Fuels in chapter Fuels, Intake System & Leakage Preventers of Automotive Engine Design
Answer» The correct option is (d) HIGH FREEZING point Best explanation: Aromatics are high knock RATING hydrocarbons, the AROMATIC content in the fuel has corrosive action of the RUBBER in fuel and has High freezing point.

Discussion

48.	Some of the Sulphur content in the fuel forms which compound?(a) Corrosive compound(b) Crystal compound(c) Amorphous compound(d) Both crystal and amorphousThis question was addressed to me by my school teacher while I was bunking the class.This interesting question is from Properties of Conventional Fuels in chapter Fuels, Intake System & Leakage Preventers of Automotive Engine Design
Answer» Correct choice is (a) Corrosive COMPOUND Easiest explanation: A high Sulphur content is UNDESIRABLE. Some of the Sulphur COMPOUNDS RESTRICT the action of lead and some FUEL forms Corrosive compound.

Discussion

49.	What is the approximate calorific value of the gasoline?(a) 1-28MJ/Kg(b) 38-48MJ/Kg(c) 50-70MJ/Kg(d) 57-68MJ/KgThe question was posed to me during an interview.This is a very interesting question from Properties of Conventional Fuels in chapter Fuels, Intake System & Leakage Preventers of Automotive Engine Design
Answer» The CORRECT CHOICE is (B) 38-48MJ/Kg Explanation: The fuel should have a high calorific value. HOWEVER, it is seen that for the different grade, gasoline have APPROXIMATELY the calorific value of 38-48MJ/Kg.

Discussion

50.	Which property indicates the tendency of the fuel to change from liquid to vapor form?(a) Knock rating(b) Calorific value(c) Volatility(d) Gum contentI got this question in an interview for internship.Query is from Properties of Conventional Fuels topic in section Fuels, Intake System & Leakage Preventers of Automotive Engine Design
Answer» RIGHT ANSWER is (c) Volatility For explanation: Volatility INDICATES the tendency of the fuel to change from liquid to VAPOR form. Higher the value of volatility, the more the COMBUSTION takes place. So the fuel should have more volatility for complete combustion.

Discussion

Explore topic-wise InterviewSolutions in .

Which material is not used as oil pan gaskets?(a) Cork(b) Felcoid(c) Asbestos(d) FelcopreneI got this question during an interview.This key question is from Leakage Preventers topic in chapter Fuels, Intake System & Leakage Preventers of Automotive Engine Design

Which type of gasket is used in passenger cars?(a) Shim type(b) Embossed steel(c) Shimbestos(d) Metal sandwichI had been asked this question in a job interview.My query is from Leakage Preventers topic in portion Fuels, Intake System & Leakage Preventers of Automotive Engine Design

Cork is made of which natural resource?(a) Seeds(b) Animal fat(c) Fossils(d) Bark of OakI had been asked this question in examination.My doubt is from Leakage Preventers in division Fuels, Intake System & Leakage Preventers of Automotive Engine Design

Which of the mentioned below is not the material of gasket?(a) Cork(b) PVC(c) Asbestos(d) RubberI had been asked this question in a national level competition.The origin of the question is Leakage Preventers topic in division Fuels, Intake System & Leakage Preventers of Automotive Engine Design

Modern engines have which valve to direct exhaust gas?(a) Heat risers(b) Thermal valve(c) Thermostatic heat riser(d) Static valveThe question was asked in homework.My question is taken from Intake System topic in chapter Fuels, Intake System & Leakage Preventers of Automotive Engine Design

The exhaust manifold is designed to withstand what?(a) Temperature(b) Gas(c) Heat(d) ContractionI have been asked this question during an online interview.The above asked question is from Intake System in section Fuels, Intake System & Leakage Preventers of Automotive Engine Design

Exhaust manifold is connected to which part of the engine?(a) Cylinder head(b) Engine block(c) Gasket(d) MufflerI have been asked this question in examination.I'd like to ask this question from Intake System topic in portion Fuels, Intake System & Leakage Preventers of Automotive Engine Design

Exhaust manifolds are usually made of what material?(a) Copper(b) Chromoly(c) Mild steel(d) Cast ironThis question was addressed to me in examination.I'd like to ask this question from Intake System in portion Fuels, Intake System & Leakage Preventers of Automotive Engine Design

The manifold must be larger enough to allow sufficient flow for what?(a) Max power(b) Max emission(c) Min emission(d) Lower torqueThe question was asked in exam.I'm obligated to ask this question of Intake System in division Fuels, Intake System & Leakage Preventers of Automotive Engine Design

What is the another name of Manifold passages?(a) Riser(b) Sprout(c) Guideways(d) RunnerThis question was posed to me in an interview for job.This interesting question is from Intake System in division Fuels, Intake System & Leakage Preventers of Automotive Engine Design

Manifolds are connected to which part of the engine?(a) Cylinder(b) Cylinder head(c) Gasket(d) Engine blockThe question was asked in homework.I want to ask this question from Intake System topic in chapter Fuels, Intake System & Leakage Preventers of Automotive Engine Design

What does inlet manifold carry to the engine?(a) Air(b) Fuel(c) Oxygen+ fuel(d) Air+ fuelI have been asked this question in my homework.This intriguing question comes from Intake System topic in portion Fuels, Intake System & Leakage Preventers of Automotive Engine Design

The LPG is a by-product of the fractional distillation of which fuel?(a) Coal(b) Kerosene(c) Diesel(d) PetrolThe question was asked in semester exam.My enquiry is from Alternative Fuels topic in chapter Fuels, Intake System & Leakage Preventers of Automotive Engine Design

Bio-diesel is made of what residuals?(a) Plant oil(b) Animal fat(c) Plant oil and animal fat(d) Edible oilThis question was addressed to me in semester exam.This interesting question is from Alternative Fuels in portion Fuels, Intake System & Leakage Preventers of Automotive Engine Design

LNG consist of more than 98% of which gas?(a) Propane(b) Ethane(c) Methane(d) ButaneI got this question by my college director while I was bunking the class.This interesting question is from Alternative Fuels in section Fuels, Intake System & Leakage Preventers of Automotive Engine Design

Compared to petrol, CNG combustion produces 25% less of what gas?(a) NOx(b) H(c) CO(d) CO2I have been asked this question at a job interview.The question is from Alternative Fuels in chapter Fuels, Intake System & Leakage Preventers of Automotive Engine Design

The Natural Gas consists of 95% of which gas?(a) Methane(b) Butane(c) Propane(d) EthaneI had been asked this question in examination.Enquiry is from Alternative Fuels topic in division Fuels, Intake System & Leakage Preventers of Automotive Engine Design

Which Ethanol is not used in light-duty vehicles?(a) E95(b) E15(c) E10(d) E85I got this question in semester exam.My question is based upon Alternative Fuels in division Fuels, Intake System & Leakage Preventers of Automotive Engine Design

Flame of which alcohol is difficult to be seen in daylight?(a) Methanol(b) Ethanol(c) Propanol(d) ButanolThe question was posed to me in unit test.The question is from Alternative Fuels in division Fuels, Intake System & Leakage Preventers of Automotive Engine Design

What is the specific gravity value of gasoline?(a) 0.3 to 0.6(b) 1 to 15(c) 0.7 to 0.78(d) 0.9 to 1.5I got this question in a national level competition.Origin of the question is Properties of Conventional Fuels in portion Fuels, Intake System & Leakage Preventers of Automotive Engine Design

What is the calorific value of Diesel?(a) 40 MJ/Kg(b) 10 MJ/Kg(c) 50 MJ/Kg(d) 30 MJ/KgI have been asked this question during an interview for a job.Asked question is from Properties of Conventional Fuels in division Fuels, Intake System & Leakage Preventers of Automotive Engine Design

Which of the mentioned below is not a material of Bio-fuel?(a) Soya bean(b) Rapeseed(c) Paddy(d) JatrophaI have been asked this question in an interview.My enquiry is from Properties of Conventional Fuels topic in division Fuels, Intake System & Leakage Preventers of Automotive Engine Design