347 + Interview Questions in Design Of Ic Engine Components in Automotive Engine Design Page 2 InterviewSolution

51.	Which of the parts mentioned below is not a part of the valve-gear mechanism?(a) Piston(b) Valve(c) Spring(d) TappetI had been asked this question by my school teacher while I was bunking the class.The above asked question is from IC Engine topic in portion Design of IC Engine Components of Automotive Engine Design
Answer» Right option is (a) PISTON Easy explanation: Valve, SPRING, tappet are all part of a valve-gear mechanism, but the piston is the part that compresses the charge and experiences the HEAT that is present inside the CYLINDER.

Discussion

52.	The burnt gases escape from the engine by opening which valve?(a) Inlet(b) Non-return(c) Exhaust(d) Inlet portI got this question in examination.My enquiry is from IC Engine topic in section Design of IC Engine Components of Automotive Engine Design
Answer» RIGHT answer is (C) Exhaust The explanation is: The FUEL is admitted into the cylinder, by OPENING the inlet valve and the burnt GASES escape from the engine by opening the exhaust valve. Inlet valve experience lesser then exhaust valve.

Discussion

53.	The fuel is admitted into the cylinder, by opening which valve?(a) Exhaust(b) Ball port(c) Inlet(d) Non-returnI got this question in my homework.The doubt is from IC Engine topic in section Design of IC Engine Components of Automotive Engine Design
Answer» RIGHT choice is (c) INLET For explanation: The fuel is ADMITTED into the cylinder, by opening the inlet valve and the burnt GASES escape from the ENGINE by opening the exhaust valve. Inlet valve experience lesser then exhaust valve.

Discussion

54.	What is the function of the valve gear mechanism in the IC engine?(a) Only opening inlet and exhaust valve(b) Open and close the inlet and exhaust ports(c) Only closing inlet and exhaust valve(d) Open and close the inlet and exhaust valveThe question was posed to me by my school principal while I was bunking the class.The origin of the question is IC Engine in section Design of IC Engine Components of Automotive Engine Design
Answer» Right CHOICE is (d) Open and close the INLET and exhaust valve Explanation: The function of the valve gear mechanism in the IC engine is to open and close the inlet andexhaust valve. Open inlet valve to ENTER the charge and open exhaust valve to remove burnt GAS.

Discussion

55.	Which of the mentioned below is the formula for total compressive stress?(a) A+B=C(b) (σc)t=σc+σb(c) τc=τa+τb(d) ρ=ω+σThe question was asked by my school teacher while I was bunking the class.My enquiry is from IC Engine topic in portion Design of IC Engine Components of Automotive Engine Design
Answer» RIGHT answer is (B) (σc)t=σc+σb The best I can explain: (σc)t=σc+σb is the formula for TOTAL COMPRESSIVE stress, always stress is represented by σ and shear stress is represented by τ. Hence, (σc)t=σc+σb is the right answer.

Discussion

56.	Which are the two stresses that act inside crankshaft?(a) Shear and bending stress(b) Compressive and bending stress(c) Tensile and compressive stress(d) Compressive and shear stressThis question was addressed to me during an interview.Enquiry is from IC Engine in division Design of IC Engine Components of Automotive Engine Design
Answer»

Discussion

57.	Find the symmetry reactions R1 and R2 when load acting is 10KN?(a) 12873N and 7178N(b) 5000N and 6000N(c) 9138N and 21876N(d) 6000N and 12000NThis question was posed to me at a job interview.My question comes from IC Engine topic in chapter Design of IC Engine Components of Automotive Engine Design
Answer» Right choice is (B) 5000N and 6000N Explanation: r1=r2=\(\FRAC{W}{2}\) =\(\frac{10000}{2}\) =5000N

Discussion

58.	Calculate the length of crankpin when the diameter of crankpin is 150?(a) 120mm(b) 178mm(c) 210mm(d) 160mmThis question was addressed to me in semester exam.Origin of the question is IC Engine topic in section Design of IC Engine Components of Automotive Engine Design
Answer» RIGHT OPTION is (a) 120MM Explanation: lc=0.8dc = 0.8×150 = 120mm

Discussion

59.	Calculate the radial component, where Pq=71260N, Ф=7.32, ϴ=35?(a) 89173.7N(b) 52689.3N(c) 21938.8N(d) 91732.18NThe question was asked in unit test.I'm obligated to ask this question of IC Engine topic in chapter Design of IC Engine Components of Automotive Engine Design
Answer» CORRECT CHOICE is (B) 52689.3N The EXPLANATION: PR= Pqcos(ϴ+Φ) = 71260×cos (35+7.32) = 52689.3N

Discussion

60.	Calculate the tangential component, where Pq=71260N, Φ=7.32, ϴ=35?(a) 21878N(b) 18979N(c) 47977N(d) 18978NI got this question during an online exam.My question is taken from IC Engine topic in division Design of IC Engine Components of Automotive Engine Design
Answer» The CORRECT CHOICE is (C) 47977N Best EXPLANATION: Pt=PqSin(ϴ+Φ) = 71260×sin (35+7.32) = 47977N

Discussion

61.	In the formula c={\(\frac{l_1}{2}+t+\frac{l_2}{2}+m\)}, what is t?(a) Diameter of piston(b) The diameter of the connecting rod(c) Diameter of bore(d) Width of flywheelThe question was asked in homework.My question is taken from IC Engine in chapter Design of IC Engine Components of Automotive Engine Design
Answer» CORRECT choice is (d) Width of FLYWHEEL Best explanation: In the formula c={\(\frac{l_1}{2}+t+\frac{l_2}{2}+m\)}, l1 is the length of the bearing 1, l2 is the length of the bearing 2, t is the width of flywheel and m is the EXCESS part of crankshaft KNOWN as margin.

Discussion

62.	In the formula l1=1.75dc, what is dc?(a) Diameter of bore(b) The diameter of the connecting rod(c) The diameter of crankpin(d) Diameter of pistonThe question was posed to me in an internship interview.Origin of the question is IC Engine in division Design of IC Engine Components of Automotive Engine Design
Answer» Right choice is (C) The diameter of CRANKPIN For explanation I would say: In the formula l1=1.75dc, l1 is the length of the crankpin and dc is the diameter of the crankpin, generally d is ALWAYS used to REPRESENT diameter.

Discussion

63.	Calculate the length of the bearing when the diameter of the crankpin is 150?(a) 377mm(b) 262.5mm(c) 938.7mm(d) 654.27mmThe question was asked by my school teacher while I was bunking the class.Question is taken from IC Engine topic in section Design of IC Engine Components of Automotive Engine Design
Answer» RIGHT ANSWER is (B) 262.5mm The EXPLANATION: l1=1.75dc =1.75×150 =262.5mm

Discussion

64.	Calculate the bending moment, when Pt=47900N and lc=170mm?(a) 8143KN-mm(b) 5983KN-mm(c) 9075KN-mm(d) 4578KN-mmI got this question in an internship interview.I need to ask this question from IC Engine in section Design of IC Engine Components of Automotive Engine Design
Answer» The CORRECT OPTION is (a) 8143KN-mm The BEST EXPLANATION: Mb=Pt×lc =47900×170 =8143KN-mm

Discussion

65.	In the reaction (R1)v, what does v represent?(a) Reaction on the central plane(b) Reaction on a horizontal plane(c) Reaction on a vertical plane(d) The horizontal and vertical planeThe question was asked in quiz.This question is from IC Engine topic in section Design of IC Engine Components of Automotive Engine Design
Answer» Correct option is (c) Reaction on a vertical plane Best explanation: In the reaction (R1)V, where R1 is the reaction at BEARING 1 and v represents the reaction of the bearing 1 in the vertical component.

Discussion

66.	In the formula sinΦ=\(\frac{sin⁡θ}{(l/r)}\), what is Φ?(a) The angle of inclination of the crankshaft with the line of action(b) The angle of inclination of connecting rod with the line of action(c) The angle of inclination of the crankshaft with the line of dead centers(d) The angle of inclination of connecting rod with the line of dead centersI got this question in an interview for internship.This interesting question is from IC Engine topic in chapter Design of IC Engine Components of Automotive Engine Design
Answer» Correct OPTION is (d) The angle of inclination of connecting ROD with the line of dead CENTERS To elaborate: In the FORMULA sinΦ=\(\frac{sin⁡θ}{(l/r)}\), Φ is the angle of inclination of connecting rod with the line of dead centers and ϴ is the angle of inclination of the crank with a line of dead centers.

Discussion

67.	In the formula sinΦ=\(\frac{sin⁡θ}{(l/r)}\), what is ϴ?(a) The angle of inclination of connecting rod with a line of dead centers(b) The angle of inclination of the crank with a line of action(c) The angle of inclination of the crank with a line of dead centres(d) The angle of inclination of the crank with connecting rodI have been asked this question during an interview for a job.My doubt stems from IC Engine in section Design of IC Engine Components of Automotive Engine Design
Answer» The correct answer is (c) The ANGLE of inclination of the crank with a LINE of dead centres Easiest EXPLANATION: In the FORMULA sinΦ=\(\frac{sin⁡θ}{(l/r)}\), Φ is the angle of inclination of connecting rod with the line of dead centers and ϴ is the angle of inclination of the crank with a line of dead centres.

Discussion

68.	What is the thickness of the crankweb when the diameter of the crankpin is 50mm?(a) 12.5 to 77.5mm(b) 22.5 to 37.5mm(c) 28.7 to 48.5mm(d) 31.9 to 34.0mmThis question was posed to me in an interview for job.My query is from IC Engine topic in division Design of IC Engine Components of Automotive Engine Design
Answer» The CORRECT choice is (B) 22.5 to 37.5mm Explanation: Thickness of the CRANK WEB is given by t=0.45dcto 0.75dc t=0.45×50 to 0.75×50 =22.5 to 37.5mm.

Discussion

69.	In the formula Mt=Pt×r, what is Pt?(a) Vertical component(b) Tangential component(c) Horizontal component(d) Normal componentI have been asked this question in an internship interview.Query is from IC Engine in section Design of IC Engine Components of Automotive Engine Design
Answer» Correct answer is (b) TANGENTIAL component To explain I WOULD say: In the formulaMt=Pt×R, Pt is the tangential component, Mt is the torsional moment and r is the CRANK RADIUS. To avoida torsional moment, torsional rigidity should be good.

Discussion

70.	When the crank web is subjected to stresses, bending stress acts on which plane?(a) Horizontal(b) Both horizontal and vertical(c) Vertical(d) normalThe question was posed to me during an online interview.I need to ask this question from IC Engine in division Design of IC Engine Components of Automotive Engine Design
Answer» CORRECT option is (b) Both horizontal and VERTICAL To explain: When the crank web is subjected to STRESSES, bending STRESS acts on Both horizontal and vertical PLANES. This bending stress is equally divided on both the planes.

Discussion

71.	Does the crank pin act as a which beam inside crankshaft?(a) Simply supported(b) Cantilever(c) Overhanging(d) Roller supportedThe question was posed to me by my school teacher while I was bunking the class.Question is taken from IC Engine in section Design of IC Engine Components of Automotive Engine Design
Answer» Correct CHOICE is (b) Cantilever For explanation I WOULD say: The crankpin acts as a cantilever beam INSIDE CRANKSHAFT and SUBJECTED to maximum bending moment on the crankshaft.

Discussion

72.	In the formula Mb=Pp[0.75lc+t+0.5l1], what is l1?(a) Length of shaft(b) Length of bearing(c) Length of connecting rod(d) Length of crankThe question was posed to me by my school teacher while I was bunking the class.The question is from IC Engine topic in chapter Design of IC Engine Components of Automotive Engine Design
Answer» RIGHT answer is (b) Length of bearing For explanation I would SAY: In the formula Mb=Pp[0.75lc+t+0.5l1], Mb is the BENDING moment, LC is the length of the crankpin, t is the thickness, l1 is the length of the bearing 1.

Discussion

73.	Calculate the bearing pressure when the reaction at 1 is 176700N and the length and diameter of crankpin are 120mm and 150mm.(a) 8.15N/mm^2(b) 7.89N/mm^2(c) 5.67N/mm^2(d) 9.81N/mm^2The question was posed to me by my college director while I was bunking the class.The query is from IC Engine topic in division Design of IC Engine Components of Automotive Engine Design
Answer» CORRECT OPTION is (d) 9.81N/mm^2 Explanation: PB=\(\FRAC{R_1}{d_1l_1}\) Pb=176700/(120×150) =9.81N/mm^2

Discussion

74.	Calculate the bending moment when load is 176700N, length of bearing is 265mm, thickness is 90mm and length of crank pin is 120mm?(a) 8.738×10^6N-mm(b) 89.3×10^6N-m(c) 55.21×106N-mm(d) 45.89×10^6N-mThis question was posed to me in an online quiz.I'm obligated to ask this question of IC Engine topic in chapter Design of IC Engine Components of Automotive Engine Design
Answer» RIGHT OPTION is (C) 55.21×106N-mm The EXPLANATION: Mb=Pp[0.75lc+t+0.5l1] =176700[0.75×120+90+0.5×265] =55.21×10^6N-mm

Discussion

75.	Calculate the length of the bearing when the diameter of crankpin is 50mm?(a) 35 to 55mm(b) 87 to 90mm(c) 75 to 100mm(d) 91 to 109mmThe question was asked during an internship interview.My enquiry is from IC Engine in section Design of IC Engine Components of Automotive Engine Design
Answer» The CORRECT OPTION is (c) 75 to 100MM To explain I would SAY: l1=1.5dc to 2dc =1.5×50 to 2×50 =75 to 100mm

Discussion

76.	In the formula Pb=\(\frac{R_1}{d_1l_1}\), what is Pb?(a) Bearing pressure(b) Torsional moment(c) Force(d) Shear forceI have been asked this question in a national level competition.This key question is from IC Engine in chapter Design of IC Engine Components of Automotive Engine Design
Answer» Correct CHOICE is (a) Bearing pressure For EXPLANATION: In the formula PB=\(\frac{R_1}{d_1l_1}\),Pb is the bearing pressure, R1 is the reaction force at bearing 1, D1 and l1 are the DIAMETER and length of bearing 1.

Discussion

77.	The reactions at the bearing 1 and 2 are due to which part of the engine?(a) Weight of camshaft(b) Weight of connecting rod(c) Weight of flywheel(d) Weight of the gearsThe question was asked in an online quiz.My question is based upon IC Engine topic in chapter Design of IC Engine Components of Automotive Engine Design
Answer» Right OPTION is (c) Weight of flywheel The best EXPLANATION: The REACTIONS at the bearing 1 and 2 are due to the weight of the flywheel(W) and the sum of their belt TENSIONS(P1+P2) and reaction forces denoted by R1 and R2.

Discussion

78.	In the design of side crankshaft at TDC position, the crank alone is at which position?(a) BDC position(b) ODC position(c) TDC position(d) HDF positionThe question was posed to me by my school principal while I was bunking the class.I would like to ask this question from IC Engine in portion Design of IC Engine Components of Automotive Engine Design
Answer» The correct option is (c) TDC position To explain: A crankshaft is subjected to bending and torsional moments DUE to the following three forces. Hence, In the design of SIDE crankshaft at the TDC position, the crank ALONE is at the TDC position.

Discussion

79.	In the design of side crankshaft at TDC position, the driven belt is assumed to be in which direction?(a) Vertical(b) Angled(c) Horizontal(d) PerpendicularThe question was asked in a job interview.My query is from IC Engine topic in chapter Design of IC Engine Components of Automotive Engine Design
Answer» Right choice is (C) Horizontal For explanation I would say: A crankshaft is subjected to bending and torsional moments DUE to the following two forces. Hence, In the DESIGN of centre crankshaft at the TDC position, the DRIVEN belt is ASSUMED to be in a horizontal direction.

Discussion

80.	In the design of side crankshaft at the TDC position, the engine is placed in which position?(a) Vertical(b) Horizontal(c) Parallel(d) PerpendicularThis question was posed to me in a job interview.The question is from IC Engine in section Design of IC Engine Components of Automotive Engine Design
Answer» Right answer is (a) Vertical Explanation: A crankshaft is subjected to BENDING and torsional moments DUE to the FOLLOWING two FORCES. Hence, In the design of side crankshaft at the TDC position, the engine is placed in a vertical position.

Discussion

81.	Which type of crankshaft is supported by two bearings?(a) Top crankshaft(b) Bottom crankshaft(c) Side crankshaft(d) Center crankshaftI got this question by my school teacher while I was bunking the class.This interesting question is from IC Engine in section Design of IC Engine Components of Automotive Engine Design
Answer» Right option is (c) Side CRANKSHAFT For explanation: The forces acting on the center crankshaft at the top DEAD centre POSITION are two principal forces and to WITHSTAND this, the crankshaft is supported by two bearings.

Discussion

82.	In the formula σc=\(\frac{(R_1)_v}{W_t}\) , what is (R1)v ?(a) Point load(b) Eccentric load(c) UVL(d) UDLThe question was asked in an interview for job.I would like to ask this question from IC Engine topic in division Design of IC Engine Components of Automotive Engine Design
Answer» The correct option is (b) Eccentric load To elaborate: In the formula σc=\frac{(R_1)_v}{W_t}[/latex], (R1)v is the eccentric load, W is the width of the crank web and t is the THICKNESS of the crank web.

Discussion

83.	Calculate the direct compressive stress when the reaction force is 15340N and the thickness and width of the crank web are 46mm and 75mm?(a) 8.43N/mm^2(b) 4.44N/mm^2(c) 5.54N/mm^2(d) 3.68N/mm^2This question was posed to me in semester exam.Enquiry is from IC Engine topic in chapter Design of IC Engine Components of Automotive Engine Design
Answer» CORRECT CHOICE is (b) 4.44N/mm^2 Explanation: σc=\(\FRAC{(R_1)_v}{W_t}\) \(\frac{15340}{46\times 75}\) =4.44N/mm^2

Discussion

84.	Calculate the width of the crank web when the diameter of crankpin is 65mm?(a) 57.3mm(b) 74.1mm(c) 63.7mm(d) 80.6mmI have been asked this question by my school principal while I was bunking the class.The origin of the question is IC Engine in portion Design of IC Engine Components of Automotive Engine Design
Answer» The CORRECT ANSWER is (B) 74.1mm Easy EXPLANATION: w=1.14dc =1.14×65 =74.1mm

Discussion

85.	The maximum compressive stress should be less than which stress?(a) Allowable tensile stress(b) Allowable compressive stress(c) Allowable shear stress(d) Allowable bending momentI got this question during an interview.Origin of the question is IC Engine in chapter Design of IC Engine Components of Automotive Engine Design
Answer» The correct ANSWER is (b) Allowable compressive stress For explanation I would say: The maximum compressive stress should be LESS than allowable compressive stress if not the CRANKSHAFT tends to bend and wobbling takes place.

Discussion

86.	The right-hand crank web is subjected to which stress due to radial component.(a) Tensile(b) Compressive(c) Normal strain(d) Linear stressThe question was asked in unit test.This interesting question is from IC Engine topic in chapter Design of IC Engine Components of Automotive Engine Design
Answer» Correct CHOICE is (b) Compressive Explanation: The right-hand crank web is SUBJECTED to compressive stress DUE to the radial COMPONENT and BENDING moment in the vertical plane due to forces in the vertical plane.

Discussion

87.	In the formula Mt=Pt×r, what is Mt?(a) Couple(b) Bending moment(c) Torsional moment(d) Shear momentThis question was addressed to me in quiz.The doubt is from IC Engine topic in chapter Design of IC Engine Components of Automotive Engine Design
Answer» CORRECT option is (c) Torsional moment The BEST EXPLANATION: In the formula Mt=Pt×R,Mt is the torsional moment due to tangential component Pt and r is the crank radius. Hence, the torsional moment is the right ANSWER.

Discussion

88.	Which are the two forces experienced by the crank pin?(a) Bending and shear moment(b) Two couple force(c) Force and torsional moment(d) Bending and torsional momentI got this question in unit test.I'm obligated to ask this question of IC Engine topic in division Design of IC Engine Components of Automotive Engine Design
Answer» CORRECT OPTION is (d) Bending and torsional moment The explanation is: Bending and torsional moment are the two FORCES EXPERIENCED by the crankpin and these forces are produced by bearing 1,2 and 3.

Discussion

89.	In the formula Pr=PqSin(θ+Φ), what is Pr?(a) The radial component at crankpin(b) Pressure component at crankpin(c) The tangential component at crankpin(d) Vector component at crankpinThis question was addressed to me in an interview for job.My doubt stems from IC Engine in chapter Design of IC Engine Components of Automotive Engine Design
Answer» The correct OPTION is (a) The RADIAL component at crankpin For EXPLANATION: In the formulaPr=PqSin(θ+Φ), Pt is the tangential component of Pq at the crankpin and Pr is the radial component of Pqat the crank pin.

Discussion

90.	In the formula Pt=PqSin(θ+Φ), what is Pt?(a) The pressure at crankpin(b) The lateral component at crankpin(c) The tangential component at crankpin(d) Power at crankpinThe question was asked during an interview for a job.The query is from IC Engine topic in division Design of IC Engine Components of Automotive Engine Design
Answer» Right ANSWER is (c) The tangential component at CRANKPIN Best explanation: In the formulaPt=PqSin(θ+Φ), Pt is the tangential component of Pq at the crankpin and PR is the radial component ofPq at the CRANK pin.

Discussion

91.	In the formulaSinΦ=\(\frac{sin\theta}{L/r}\), what is L?(a) Lateral shift(b) Length of connecting rod(c) Linear bending(d) Length of strokeThis question was posed to me by my college director while I was bunking the class.The doubt is from IC Engine topic in division Design of IC Engine Components of Automotive Engine Design
Answer» RIGHT answer is (B) Length of connecting ROD Easiest explanation: The RELATIONSHIP between Ф and ϴ is given bySinΦ=\(\frac{sin\theta}{L/r}\) where L is the length of the connecting rod and r is the radius of the crank.

Discussion

92.	The relationship between Φ and θ is given by?(a) SinΦ=\(\frac{sin\theta}{L/r}\)(b) CosΦ=\(\frac{sin\theta}{L/r}\)(c) SinΦ=\(\frac{sin\theta}{L\times r}\)(d) CosΦ=\(\frac{cos\theta}{L/r}\)I got this question in an online interview.My question is from IC Engine in portion Design of IC Engine Components of Automotive Engine Design
Answer» Correct option is (a) SinΦ=\(\frac{sin\theta}{L/R}\) Explanation: The RELATIONSHIP between Φ and θ is GIVEN by SinΦ=\(\frac{sin\theta}{L/r}\) where L is the LENGTH of the connecting rod and r is the radius of the crank.

Discussion

93.	What is the crank angle from the TDC position for diesel engines?(a) 35° to 45°(b) 25° to 35°(c) 30° to 40°(d) 20° to 30°I have been asked this question in an interview for internship.My question comes from IC Engine topic in chapter Design of IC Engine Components of Automotive Engine Design
Answer» The correct answer is (c) 30° to 40° The BEST I can EXPLAIN: The CRANK ANGLE from the TDC position for the petrol engine is 25° to 35° and the crank angle from the TDC position for the diesel engine is 30° to 40°.

Discussion

94.	What is the crank angle from the TDC position for the petrol engine?(a) 30° to 40°(b) 35° to 45°(c) 25° to 35°(d) 20° to 30°This question was addressed to me during an interview.This is a very interesting question from IC Engine in chapter Design of IC Engine Components of Automotive Engine Design
Answer» Correct OPTION is (c) 25° to 35° Best explanation: The CRANK ANGLE from the TDC position for the PETROL engine is 25° to 35° and the crank angle from the TDC position for the diesel engine is 30° to 40°.

Discussion

95.	The maximum torque is due to which component of force on the crank pin?(a) Perpendicular(b) Parallel(c) Concentric(d) TangentialI got this question during a job interview.My question is taken from IC Engine in division Design of IC Engine Components of Automotive Engine Design
Answer» Correct answer is (d) Tangential To explain: The torque is maximum when the tangential component of FORCE on the crank PIN is maximum. The force is produced due to the CONNECTING ROD.

Discussion

96.	What is the dimension of crankweb when the diameter of crankpin is 50mm?(a) 25mm(b) 35mm(c) 40mm(d) 45mmThis question was posed to me during a job interview.The above asked question is from IC Engine in chapter Design of IC Engine Components of Automotive Engine Design
Answer» CORRECT option is (b) 35mm Explanation: THICKNESS of the crank WEB is GIVEN by t=0.7dc t=0.7×50 =35mm

Discussion

97.	The bending moment in the horizontal plane is due to?(a) Belt compression(b) Resultant belt tension(c) Resultant tension(d) Resultant belt compressionI had been asked this question by my school principal while I was bunking the class.Query is from IC Engine in portion Design of IC Engine Components of Automotive Engine Design
Answer» Right answer is (B) Resultant belt tension Easy explanation: The BENDING MOMENT in the vertical PLANE is DUE to the weight of the flywheel and the bending moment in the horizontal plane is due to resultant belt tension.

Discussion

98.	In the design of center crankshaft b=2D, what is D?(a) Valve diameter(b) Piston diameter(c) Gudgeon pin diameter(d) Shrinking diameterI got this question in class test.The origin of the question is IC Engine topic in portion Design of IC Engine Components of Automotive Engine Design
Answer» Right ANSWER is (b) Piston diameter To explain: In the design of center CRANKSHAFT b=2D, b is the distance between BEARING 1 and bearing 2 and D is the piston diameter. HENCE, piston diameter is the right answer.

Discussion

99.	The central plane of the crankpin is subjected to which force?(a) Minimum bending moment(b) Maximum bending moment(c) Normal stress(d) Principle stressI have been asked this question in an internship interview.My doubt is from IC Engine in section Design of IC Engine Components of Automotive Engine Design
Answer» The correct CHOICE is (B) MAXIMUM bending moment Easiest explanation: The central plane of the crankpin is subjected to maximum bending moment and the bending moment at the central plane is given by (Mb)C=(R1)vb1.

Discussion

100.	The bending moment in the vertical plane is due to which part of the engine?(a) Weight of piston(b) Weight of flywheel(c) Weight of engine(d) Weight of vehicleThis question was addressed to me in homework.Asked question is from IC Engine topic in division Design of IC Engine Components of Automotive Engine Design
Answer» Correct option is (B) WEIGHT of flywheel Easiest EXPLANATION: The BENDING moment in the vertical plane is due to the weight of the flywheel and The bending moment in the horizontal plane is due to RESULTANT belt tension.

Discussion

Explore topic-wise InterviewSolutions in .

The burnt gases escape from the engine by opening which valve?(a) Inlet(b) Non-return(c) Exhaust(d) Inlet portI got this question in examination.My enquiry is from IC Engine topic in section Design of IC Engine Components of Automotive Engine Design

The fuel is admitted into the cylinder, by opening which valve?(a) Exhaust(b) Ball port(c) Inlet(d) Non-returnI got this question in my homework.The doubt is from IC Engine topic in section Design of IC Engine Components of Automotive Engine Design

Find the symmetry reactions R1 and R2 when load acting is 10KN?(a) 12873N and 7178N(b) 5000N and 6000N(c) 9138N and 21876N(d) 6000N and 12000NThis question was posed to me at a job interview.My question comes from IC Engine topic in chapter Design of IC Engine Components of Automotive Engine Design

Calculate the length of crankpin when the diameter of crankpin is 150?(a) 120mm(b) 178mm(c) 210mm(d) 160mmThis question was addressed to me in semester exam.Origin of the question is IC Engine topic in section Design of IC Engine Components of Automotive Engine Design

Calculate the radial component, where Pq=71260N, Ф=7.32, ϴ=35?(a) 89173.7N(b) 52689.3N(c) 21938.8N(d) 91732.18NThe question was asked in unit test.I'm obligated to ask this question of IC Engine topic in chapter Design of IC Engine Components of Automotive Engine Design

Calculate the tangential component, where Pq=71260N, Φ=7.32, ϴ=35?(a) 21878N(b) 18979N(c) 47977N(d) 18978NI got this question during an online exam.My question is taken from IC Engine topic in division Design of IC Engine Components of Automotive Engine Design

Calculate the bending moment, when Pt=47900N and lc=170mm?(a) 8143KN-mm(b) 5983KN-mm(c) 9075KN-mm(d) 4578KN-mmI got this question in an internship interview.I need to ask this question from IC Engine in section Design of IC Engine Components of Automotive Engine Design

In the formula Mt=Pt×r, what is Pt?(a) Vertical component(b) Tangential component(c) Horizontal component(d) Normal componentI have been asked this question in an internship interview.Query is from IC Engine in section Design of IC Engine Components of Automotive Engine Design

Calculate the length of the bearing when the diameter of crankpin is 50mm?(a) 35 to 55mm(b) 87 to 90mm(c) 75 to 100mm(d) 91 to 109mmThe question was asked during an internship interview.My enquiry is from IC Engine in section Design of IC Engine Components of Automotive Engine Design

In the formula Pb=\(\frac{R_1}{d_1l_1}\), what is Pb?(a) Bearing pressure(b) Torsional moment(c) Force(d) Shear forceI have been asked this question in a national level competition.This key question is from IC Engine in chapter Design of IC Engine Components of Automotive Engine Design

In the design of side crankshaft at TDC position, the driven belt is assumed to be in which direction?(a) Vertical(b) Angled(c) Horizontal(d) PerpendicularThe question was asked in a job interview.My query is from IC Engine topic in chapter Design of IC Engine Components of Automotive Engine Design

In the design of side crankshaft at the TDC position, the engine is placed in which position?(a) Vertical(b) Horizontal(c) Parallel(d) PerpendicularThis question was posed to me in a job interview.The question is from IC Engine in section Design of IC Engine Components of Automotive Engine Design

In the formula σc=\(\frac{(R_1)_v}{W_t}\) , what is (R1)v ?(a) Point load(b) Eccentric load(c) UVL(d) UDLThe question was asked in an interview for job.I would like to ask this question from IC Engine topic in division Design of IC Engine Components of Automotive Engine Design

The right-hand crank web is subjected to which stress due to radial component.(a) Tensile(b) Compressive(c) Normal strain(d) Linear stressThe question was asked in unit test.This interesting question is from IC Engine topic in chapter Design of IC Engine Components of Automotive Engine Design

In the formula Mt=Pt×r, what is Mt?(a) Couple(b) Bending moment(c) Torsional moment(d) Shear momentThis question was addressed to me in quiz.The doubt is from IC Engine topic in chapter Design of IC Engine Components of Automotive Engine Design

The maximum torque is due to which component of force on the crank pin?(a) Perpendicular(b) Parallel(c) Concentric(d) TangentialI got this question during a job interview.My question is taken from IC Engine in division Design of IC Engine Components of Automotive Engine Design

What is the dimension of crankweb when the diameter of crankpin is 50mm?(a) 25mm(b) 35mm(c) 40mm(d) 45mmThis question was posed to me during a job interview.The above asked question is from IC Engine in chapter Design of IC Engine Components of Automotive Engine Design

In the design of center crankshaft b=2D, what is D?(a) Valve diameter(b) Piston diameter(c) Gudgeon pin diameter(d) Shrinking diameterI got this question in class test.The origin of the question is IC Engine topic in portion Design of IC Engine Components of Automotive Engine Design