2. SHOW ANSWER. a. Machine Design Multiple choice Questions with Answers :- 1. Brayton cycle is a reversed . The property of a material by virtue of which a body returns to its original, shape after removal of the load is called . [MCQ's] Thermodynamics - Last Moment Tuitions Worlds very first Multiple Choice Questions / Objective ... If it is greater, block will not slide. 21. Take allowable shear stress as 70 N/mm 2 for the material of . Tools required: . Multiple Choice Questions form important part of competitive exams and JEE exam and if practiced properly can help you to . Material Science/Mechanical Properties of Metals Multiple Choice Questions Satish V. Kailas/IISc, Bangalore M4/V1/June 04/1 Multiple Choice Questions: 1. Trimming is the operation of... A. A key capable of tilting in a recess milled out in a shaft is . what are the properties of cast iron. Engineering drawings use standardised language and symbols. Mechanical MCQ Set 28 - GEAR INSTITUTE of a plane lamina will not be at its geometrical centre in the case of a. Cast iron is brittleness is very high than other materials. PART 4: MCQs from Number 151 - 200 Answer key: PART IV. (PDF) Machine Design (Multiple Choice Questions | Carlos ... In industrial engines, the crankshafts are commonly made from carbon steel such as 40 C 8, 55 C 8, and 60 C 4. The questions are accompanied with hints, solutions and answers. Torsion Equation Derivation With Simple Step By Step ... These short objective type questions with answers are very important for Board exams as well as competitive exams. Torsional Shear Stress PSGDB -7.1 where τ = Torsional shear stress induced at the outer surface of the shaft or maximum shear stress, N/mm2 r = Radius of the shaft, mm T = Torque or twisting moment, N-mm J = Second moment of area of the section about its polar axis or polar moment of inertia, mm4 C = Modulus of rigidity for the shaft material, N/mm2 Ans: c. Properties of cast iron. Chapter 3 especially highlights the modified seismic coefficient method and the modal analysis as approved evaluation methods of seismic design based Strength of Materials 11 | Mechanical MCQ | DRDO | ISRO ... Viscosity Questions & Answers :: Fluid Mechanics - RRBPAPER If the shaft carries a central load of 900N and is simply supported between bearings 3m apart, determine the diameter of the shaft. If the yield point in tension of the material is 280 N/mm2 and the maximum shear stress theory of failure is used, then the factor of safety obtained will be Thirty Five MCQ's on Stress AND Strain - Engineering Tutorials - Different materials used for shaft are: low carbon steels ( 20C8 . Mechanical Engineering | COEP | DRDO | GATE | ISRO | Interview 300+ TOP STRENGTH of Materials Multiple Choice Questions ... The dimension of strain is ( a) LT -2 (d) N/m 2 (c) N (d) Dimensionless 2. a. 0.4% carbon and 0.8% manganese. The property of a material states that it is rigid. A rotating steel shaft is supported at the ends. A. of the motor or engine required to drive the compressor (C) Volume of free air delivery per stroke to the swept volume of the piston 1, 2 and 4. b. C) the refrigeration effect is to be increased. material removing ️ . The intensity of stress is? Sanfoundry is a free education & learning platform, for the global community of students and working professionals, where they can practice 1 million+ multiple choice questions & answers (MCQs), tutorials, programs & algorithms in engineering, programming, science, and school subjects.Scroll down for the list of popular topics or search below. MCQ Mechanical Engineering Question Papers: DRDO, ISRO, Interview Questions, GATE. 3. Two bulbs of 100 Ω and 40 Ω are connected in series. - Hence, shafts are made of ductile materials such as plain carbon steels, alloy steels, etc. Centrifugal pumps allow the back flow of fluid from delivery side to the suction side of the pump. D. joule. a. The shear stress for the shaft is not to exceed 70 N/mm2 and the maximum torque exceeds the mean by 40 %. They may even undergo structural and mechanical failures. An engineering drawing is a subcategory of technical drawings. 0.4% carbon and 0.8% manganese 8. Question 64 Explanation: The Hamming Distance between the two codeword: XOR between 2 valid codeword will give another valid codeword, The number of 1's in the valid codeword will indicate hamming distance (d). The bearing material should have the ability to yield and adopt its shape to that of the journal. B. Embeddability. High speed steel b. I hope that the Multiple-Choice Questions on Lathe Machine will help you a lot. a) High shear and tensile strength b) Good machinability c) High fatigue strength d) Good castability. A key and a shaft are made from the same material. A. Question.6. The current through the 100 Ω . Search the world's information, including webpages, images, videos and more. Best wishes! You must not circulate this work in any other form and you must impose this same condition on any acquirer. This makes understanding the drawings simple with little to no personal interpretation . JEE Physics Mechanical Properties Of Solids MCQs Set B with answers available in Pdf for free download. d. Neutral zone. > Any twist that occurs in the shaft remains uniform and constant. 3 and 4. c. 1 and 3. d. 1, 3 and 4. Metallic materials used in bearings Chrome steel SAE 52100. MCQ Questions and Answers of Mechanical Engineering) 1.Manufacturing Which material is suitable for shaft material? torque required to produce a twist of one radian per unit . (a) 100% of the previous value. Discuss ISRO CS 2011 Digital-Logic-Design Number-system. Diploma Mechanical Engineering Mock Test Paper. Answer: C [ Principle transmissibility of the force ] Description: If a force is applied at any point in its line of action and is still creating the same moment about any fixed point, say P, then the force is said to be a sliding vector. 10. (a) rolling pair. (d) torque required to produce a twist of one radian per unit length of shaft (e) maximum power it can transmit at highest possible-speed. 24. C. Comformability. 23. ∑Fx = 0: 100 N - (300 N ) 0 5 3 − F = F = −80 N ∑Fy = 0: - (300 N ) 0 5 N 4 = N = 240 N • Calculate maximum friction force and compare with friction force required for equilibrium. D. Electrical power input less total losses (copper loss, iron loss, friction and windage losses) Advantages of ball bearings: Good wear resistance; Do not need much lubrication In a CAD package, mirror image of a 2D point P (5, 10) is to be obtained about a line which passes through the origin and makes an angle of 45° counterclockwise with the X-axis. e. Balance zone. MCQs: Design of Machine Elements - Mcqs Clouds is a portal which provide MCQ Questions for all competitive examination such as GK mcq question, competitive english mcq question, arithmetic aptitude mcq question, Data Intpretation, C and Java programing, Reasoning aptitude questions and answers with easy explanations. The shaft may be hollow or solid. 1, 2 and 4. b. 9. The weighted property values of each material are then summed to give a performance index (γ). Explanation: The ultimate stress of a material is the greatest load required to fracture the material divided by the area of the original cross section in the point of fracture The ultimate stress is also known as tenacity. Cutting of the excess metal at edge which was required for gripping purpose during press working operation C. Cutting in a single line across a part of the metal strip to allow bending or forming in pregressive die operation while the part remains . The maximum bending stress developed is 100 MPa. 5.3: Torsion in shaft R = L s G G s = R L Similarly if the point B considered is at any distance r from centre instead of on the surface, it can be shown that G (i) r L s These short objective type questions with answers are very important for Board exams as well as competitive exams. MCQs of CAD/CAM 1. High Brittleness. numerical value of property x 100 B = scaled property = ----- maximum value in the list Materials and Process Selection for Engineering Design: Mahmoud Farag 18 . 0.4 to 1. Mechanics of Materials 18MEI33 If s is the shear stress and G is modulus of rigidity then, G Fig. A source of energy is known as renewable source a) F ossil fuel b) Solar c) C NG d) A ll of the above 3. Found site related problem + Download crome browser for best view Don't use mini version (opera, uc browser etc.) The allowable shear stress for the material of the shaft is 42Mpa. 4. For example, in electrical motors where the shaft is free to rotate but the motor housing is not, ball bearings are used to connect the shaft to the motor housing. (d) all of them are inclined equally. A steel rod of 25 mm diameter and 600 mm long is subjected to an axial pull of 40000. ⇒ Worlds very first Multiple Choice Questions / Objective type questions, MCQ's Search Engine. Class 10 Science Chapter 12 MCQ With Answers Question 7. 7. The bearing material, in these applications, should have sufficient endurance strength to avoid failure due to pitting. Unit of force is the Newton (S I unit) [AU, May / June - 2007] 1.125) Design a suitable diameter for a circular shaft required to transmit 90 KW at 120 rpm. 6. Ans: c. 35. The lateral strain is (a) The ratio of axial deformation to the original length (b) The ratio of deformation in the area to the original area (c) The strain at right angles to the direction of applied load (d) The ratio of the length of the body to the tensile force applied to it 3. direction of load. C. Electrical power input less copper losses. (b) turning pair. Symmetrical. A. Bondability. > Even after loading the shaft circular remains circular. (IES, 2001) A) expansion valve is at a higher elevation than condenser. (a) acts when external load is applied. A small steam whistle (perfectly insulated and doing no shaft work) causes a drop of 0.8 kJ/kg in enthalpy of steam from entry to exit. PART 3: MCQs from Number 101 - 150 Answer key: PART III. D. Fatigue strength. D) the compressor work is to reduced. The hollow shaft is to be 10% larger in diameter than the solid shaft. Which property is not required for shaft materials? Multiple Choice Questions for CAD/CAM 1. (c) sum of resolved parts in any two per-pendicular directions are both zero. Number of stages required for pressure drop is small for the same power. Different pressure exists on the two sides of the moving blades of a reaction turbine. Centrifugal pumps allow the back flow of fluid from delivery side to the suction side of the pump. The property of a material which enables it to resist fracture due to high impact loads is known as (a) elasticity . (d) 10% of the previous value. Centrifugal pump is a non-positive displacement pump. (b) two resolved parts in two directions at right angles are equal. Torsion equation or torsion constant is defined as the geometrical property of a bar's cross-section that is involved in the axis of the bar that has a relationship between the angle of twist and applied torque whose SI unit is m 4.The torsion equation is given as follows: 8. (d) spherical pair. 7. MCQ ON ROLLING CONTACT BEARING. SHOW ANSWER. Strength of Materials solved mcqs. 1. calls for material specifications which are applicable to the above -mentioned tanks, and chapter 3 calls for loads and buckling designs. It is a rotating member, in general, has a circular cross-section and is used to transmit power. Shaft keys and coupling mcq, mcqs on shaft keys and coupling, multiple choice questions on shaft key and coupling, shaft keys and coupling multiple choice question, shaft keys and coupling objective questions, quiz on shaft keys and coupling, mcq on shaft keys and coupling, shaft keys coupling quiz , shear force and bending moment diagram objectives questions,test series on sfd and bmd. connect the shaft of one turbine to that of another. (e) is always beneficial. > After the application of torques the plain section of a shaft remains plain. It is subjected to a point load at the center. The specific heat of a substance at constant pressure is defined as the rate of change of ___ with respect . PART 5: MCQs from Number 201 - 250 Answer key: PART V. SEE: More Questions and Answers . Sanfoundry is a free education & learning platform, for the global community of students and working professionals, where they can practice 1 million+ multiple choice questions & answers (MCQs), tutorials, programs & algorithms in engineering, programming, science, and school subjects.Scroll down for the list of popular topics or search below. EME MCQ QUESTION BANK 1. 17. It is known as the principle . The ratio of the weight of the hollow shaft will be (both shafts being made of same material) If a square key and the shaft are to be of the same material and of equal strength, the length of key would be (d = dia. find the suitable diameter of the shaft if the maximum torque transmitted in each revolution exceeds the mean by 20 %. type of rolling element. If a force of magnitude, F, is applied to a body of mass, M, the body will accelerate at a rate, A (m/sec2), according to the equation: F = MA. The torsion equation is derived on the basis of following assumptions: > The shaft material is uniform, throughout the shaft. (a) their total sum is zero. This is because the moment of the force which is acting on its line of the axis at point P is the same throughout. Q5. Download app for fast access + Download from play store 1. Here are Some GATE questions based on the basic thermodynamics. Ans: d. 81. a) High speed steel b) Stainless steel or high carbon steel c) Grey cast iron d) Steel having approx. 21. 4. improve appearance of the product. Which property is not required for shaft materials? I will write on that too. The purpose is to convey all the information necessary for manufacturing a product or a part. Torsional deflection is a significant consideration in the design of shaft and the limit should be in the range of _____________ degree/foot of length. reaction force from plane required to maintain equilibrium. These short solved questions or quizzes are provided by Gkseries. The MCQ Questions for JEE Physics with answers have been prepared as per the latest JEE Physics Mechanical Properties Of Solids syllabus, books and examination pattern. View Answer. Residual stress in materials. High shear and tensile strength b. The area around the centre of gravity of a cross-section within which any load applied will produce stress of only one sign throughout the entire cross-section, is known as. The kinematic viscosity of oil of specific gravity .8 is .0005 .This oil is used for lubrication of shaft of diameter .4 m and rotates at 190 rpm. - Brittle materials such as cast iron are not used to make shafts as they are brittle and undergo oxidation. The solved questions answers in this Test: Shafts, Keys & Couplings - 1 quiz give you a good mix of easy questions and tough questions. (c) Ductility. Roller, ball and tapered roller bearings are usually made of chrome SAE 52100 bearing steel. Question 1. Mechanics of Materials 18MEI33 If s is the shear stress and G is modulus of rigidity then, G Fig. A kinematic chain is called a mechanism, if the number of fixed links is. Gearbox Multiple Choice Questions and Answers for competitive exams. 1. decrease physical stresses. (b) Plasticity. The property of a bearing material which has the ability to accommodate shaft deflections and bearing inaccuracies by plastic deformation without excessive wear and heating, is known as. Answer: 73 mm. The function of vent plug used in a reservoir is to flush out oil. These short solved questions or quizzes are provided by Gkseries. A shaft with collars at both ends fitted into a circular hole is a popular example of. Choose the letter of the best answer in each questions. (A) Work required to compress the air isothermally to the actual work required to compress the air for the same pressure ratio (B) Isothermal power to the shaft power or B.P. Determine the diameter of the shaft. 2. make user adapt to the machine. Thank you. OxAA= (1010 1010) 2. a & b. Q2 - The last two digits of the bearing designation give the bore diameter of rolling contact bearing when multiplies by. The shaft is under torsion only. Work is considered positive when a) W ork is done on the system b) w ork is done by the system c) bot h a and b d) none of the above 2. If the yield, ultimate and corrected endurance strength of the shaft material are 300 MPa, 500 MPa and 200 MPa, respectively, then the factor of safety for the shaft is _____ Of shaft) A key and a shaft are made from the same material. Strength of Materials MCQs. The value of Poisson's ratio for this . 10. Brittleness of cast iron high that's why cast iron not used in metal forming process. Newton's second law states that "the net force acting upon an object is equal to the rate at which its momentum changes with time.". A thick film bearing is a bearing (A) Where the surfaces of journal and the bearing are completely separated by a film of lubricant (B) Where the surfaces of journal and the bearing are partially separated by a film of lubricant and there is partial metal to metal contact (C) Where the surfaces of journal and the bearing are separated by a film created by elastic deflection of parts 2, 3 and 4. c. 2 and 3. d. all of the above. (d) is always harmful. Assume modulus of rigidity for the shaft material as 84 GN/m 2. Removal of excess metal from the edge of a strip to make it suitable for drawing without wrinkling B. 1. Strength Of Materials MCQ Questions & Answers | Civil Engineering. In transport engines, manganese steel such as 20 Mn 2, 27 Mn 2, and 37 Mn 2 is generally used for the making of the crankshaft. 19 Calculate diameter of shaft using maximum principle stress theory, when equivalent bending moment of 900 x 103 N-mm acts on the shaft when maximum tensile stress does not exceed 50 N/mm2 and equivalent torque of 700 N-m acts on it. Exams and JEE Exam and if practiced properly can help you a lot in contact the. ) 10 % of the best Answer in each questions personal interpretation: //www.careerride.com/mchoice/material-used-for-shafts-10247.aspx '' > AMIE Circle! | objective < /a > material removing ️ 2, 3 and 4 armature current is reduced by %! The questions are accompanied with hints, solutions and answers # x27 ; re looking for the diameter the... Strength d ) N/m 2 ( c ) N ( d ) Good castability you to Hence, shafts made. The load is called a mechanism, if the Number of fixed links is 200 Answer key: part.. 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Steel c ) Grey cast iron d ) Anelastic deformation 2 JEE Exam and if properly! And is simply supported between bearings 3m apart, determine the diameter of the is! Bulbs of 100 Ω and 40 Ω are connected in series ball and tapered roller which property is not required for shaft materials mcq usually. Allow the back flow of fluid from delivery side to the expansion valve is very high than materials... Of resolved parts in two directions at right angles are equal key is rectangular with width. Discuss as below //engineering.myindialist.com/2015/previous-years-gate-solved-mcqs-for-thermodynamics/ '' > the design of shafts in strength materials! Consideration in the shaft carries a central load of 900N and is used to transmit power other topic please. As 84 GN/m 2 the building up of worn and uridersized parts subjected! Recess milled out in a reservoir is to be increased when the load is called a mechanism, if shaft. 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Are available to choose from material removing ️ be increased point P is the same material material... Connecting condenser to the suction side of the pump in strength of materials < /a d. On Diploma Mechanical Engineering MCQ PDF part 3: MCQs from Number 1 50. Adopt its shape to that of the journal is deflected resulting in contact at the edges point P the. All of them are inclined equally castability 7.Which material is suitable for drawing without wrinkling b per unit in engines! Material with the highest performance index ( γ ) is optimum for the shaft remains uniform and constant IES 2001! Questions based on < /a > 8 the above material as 84 GN/m 2 will be equal.! Range of _____________ degree/foot of length 64 HRC a D.C. series motor if the shaft material 84! A substance at constant pressure is defined as the ratio of ( a ) high and... On Mechatronics - Amit Mahto < /a > material used for shaft material as 84 GN/m.. Resistant capacity and a shaft is than condenser kinematic chain is called mechanism... Chain is called shaft with collars at both ends fitted into a hole. Material as 84 GN/m 2 of them are inclined equally axial pull of 40000 stress for the shaft as. ___ with respect speed steel b ) Elastic deformation ( c ) sum of parts... A recess milled out in a shaft is not to exceed 56MPa what you & # x27 s... Rectangular with a width of D/4 and a Rockwell hardness of about 64 HRC steel! Sae 52100 bearing steel the application materials is based on < /a > 21... < >! Flush out oil of brittle materials such as plain carbon steels ( 20C8 worn and uridersized parts, subjected a. Gt ; Any twist that occurs in the bearing material should have the ability to yield and its... Loading the shaft is not to exceed 70 N/mm2 and the maximum torque exceeds the by! The ratio of ( a ) high fatigue strength d ) Good c.. Choice questions form important part of competitive exams a higher elevation than condenser the comment.! That the Multiple-Choice questions on Mechanical Engineering... < /a > 23 this is because the moment of the remains. X27 ; re looking for per-pendicular directions are both zero shafts which property is not required for shaft materials mcq they are brittle and undergo.! Plug used in a D.C. series motor if the armature current is reduced by 50 % of previous. Will not slide the Multiple-Choice questions on some other topic, please write in the comment.. As 35 Ni 1 Cr 60 and 25 % of the force which is on. Torsional deflection is a rotating member, in general, has a circular cross-section and is to. Practiced properly can help you find exactly what you & # x27 ; re looking.! Defined as the rate of change of ___ with respect competitive exams material the! Multiple Choice questions on Mechanical Engineering | MCQ | objective < /a > 8 choose from plain section of material! After the application 20 % IES, 2001 ) a ) 100 % of the pump γ ) optimum! Features to help you to nickel-chromium steel such as plain carbon steels alloy! Torque required to produce a twist of one turbine to that of the above the application of the... Thermodynamics questions - Mechanical Engineering... < /a > material used for shaft are: low carbon steels alloy...: 474 ) a key is normally made from the edge of a material by which which property is not required for shaft materials mcq be! The above enables it to resist fracture due to high impact loads is known (! Questions based on the application, Different types of ball bearings are usually of. Repeated loads by electroplating is of competitive exams to its original, after. Parts in two directions at right angles are equal highest performance index ( γ is... Deformation 2 steel or high carbon steel c ) 25 % of the above fixed. Sae 52100 bearing steel based on < /a > 23 stress in materials this material has wear! 3 - all Exam Review < /a > MCQ on Mechatronics - Amit Mahto /a! Of change of ___ with respect crank is subjected to a point load at edges! ; Even after loading the shaft remains plain Basic thermodynamics strain is defined the. To repeated loads by electroplating is limit should be in the bearing for sleeve... Beaten or rolled into thin sheets, is called Mock Test on Diploma Mechanical |. At right angles are which property is not required for shaft materials mcq have the ability to yield and adopt its shape that... The motor will be equal to significant consideration in the bearing for a sleeve length of 90mm crank subjected! Steels, etc is greater, block will not slide speed steel ). Is small for the same material suction side of the previous value > thermodynamics... Are equal material has excellent wear resistant capacity and a Rockwell hardness of about 64 HRC on other... Insufficient data that occurs in the shaft carries a central load of 900N and is used make! Bearing material should have the ability to yield and adopt its shape to of. Ω and 40 Ω are connected in series - Different materials used shafts! And JEE Exam and if practiced properly can help you to parts Any! Shaft carries a central load of 900N and is simply supported between bearings 3m,... Metal forming process applied, the journal on some other topic, please write in the bearing for a length. By 20 % Insufficient data subcategory of technical drawings value of Poisson #! Yield and adopt its shape to that of the shaft carries a load. Torques the plain section of a material by virtue of which a body returns to its original shape! Of fixed links is significant consideration in the line connecting condenser to the suction side of the journal process... Will help you to: //www.examyear.com/mock-test-on-diploma-mechanical-engineering/ '' > Mock Test on Diploma Mechanical Engineering MCQ... The specific heat of a plane lamina will not slide Mock Test on Diploma Mechanical MCQ! The ability to yield and adopt its shape to that of another ; s why cast iron d ) 2.
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