Solved question paper for EME May-2007 (B-TECH 1st-2nd)
Solved Question Paper
Elements of mechanical engineering May-2007
PTU • B-TECH • Information Technology • 1st-2nd • May-2007
elements of mechanical engineering previous year question papers on BRpaper are organized for students of Punjab Technical University’s Bachelor of Technology program, 1st-2nd semester. This section makes it easier to browse subject-wise old question papers for elements of mechanical engineering, so students can review how questions are typically framed in past exams and get a sense of the exam pattern. Many students search for elements of mechanical engineering question bank while preparing for exams, and this page is built to support exactly that kind of subject-wise browsing and revision. BRpaper is not the official website of Punjab Technical University or any institution, and it does not publish official notices or academic updates.
PART-A
1. Basic Concepts of Thermodynamics (08)
Definition of thermodynamic: Need to study thermodynamics; Application areas of thermodynamic; Difference between Microscopic (or, Statistical) thermodynamics and Macroscopic(or, Classical) thermodynamics; Brief concept of continuum; Thermodynamic System : definition, types (Open, Closed and Isolated) and their examples; Thermodynamic System Boundary : definition, types and their examples; Surroundings; Control(fixed) mass and Control Volume concept and their example ; Thermodynamic State; Thermodynamic Property: definition, types citing their examples; condition for any quantity to be a property; State postulate; Thermodynamic equilibrium (which includes Thermal, Mechanical and Chemical equilibrium etc.); Thermodynamic path; Thermodynamic process: definition, concept of reversible process, quasi-static (or, quasi-equilibrium) process, irreversible process, conditions for reversibility and how these are met with, non-flow processes and flow processes, method of representation of reversible and irreversible process on property diagrams; Cyclic process; Thermodynamic Cycle: definition and its concept; Energy and its forms (microscopic and macroscopic); Physical insight to internal energy; Energy transfer across system boundary i.e. transient energies (heat and work); Difference between heat and work; Sign conventions for heat and work interactions; heat and work as path functions; Equality of Temperature and Zeroth law of Thermodynamics.
2. First Law of Thermodynamics and its applications (12)
Definition, essence and corollaries or consequences of first law of Thermodynamics; Expressions for First law of Thermodynamics for a control mass undergoing a Cycle and for process (i.e., a change in state of a control mass) ; Concept of Enthalpy and total energy and differentiation between the two - a thermodynamic property; Compressible and incompressible substances, Specific heats, Difference between Internal Energy and Enthalpy of compressible and incompressible substances; Representation of first law of thermodynamics as rate equation; Analysis of non-flow/ flow process for a control mass undergoing constant volume, constant pressure, constant temperature, adiabatic and polytropic processes; Free Expansion Process and its examples, its representation on Property diagram; Review of concepts of control volume; Expressions of first law of thermodynamics for a control volume (i.e. open system) ; Steady State Steady Flow process and its examples; First law analysis of Steady State Flow process e.g. isochoric, isobaric, isothermal, isentropic and polytropic process; Throttling process and its applications; Flow energy or inertial energy of flowing fluids or, Energy transport by mass; Application of Steady State Flow Energy Equation to various engineering devices.
3. Second Law of Thermodynamics (16)
Limitations of first law of thermodynamics; and how 2nd law is fully able to explain away and thus overcome those shortcomings of Ist law; Thermal Reservoirs, source and sink (Low temperature and high temperatures); Heat Engine, Heat Pump and Refrigerator: definitions, working, efficiency/performance and their real life examples. Justification as to why the actual efficiency of Heat Pump and Refrigerator shall also be ≤ 100% though on the face of it seems to be more than 100%; Various statements of Second Law of Thermodynamics and their equivalence; Philosophy of Carnot cycle and its consequences viz. how each of the individual four processes constituting the cycle contribute in optimizing the output and efficiency of the cycle; Carnot Engine, Carnot Refrigerator and Carnot Heat Pump: definitions, working, efficiency/performance and Limitations of the cycle; Carnot theorem for heat engines, refrigerators and heat pumps; derivation of Carnot efficiency/COP (which seems to be more than 100%); Thermodynamic Temperature Scale; Clausius theorem and Inequality; Philosophy and concept of entropy; Entropy changes during various processes; Temperature - Entropy Chart and representation of various processes on it; Principle of Increase of Entropy; Applications of Entropy Principle; Quality of Energy viz. high and low grade energies; Degradation of Energy; Third Law of Thermodynamics.
PART-B
4. Gas Power Cycles (12)
Introduction; Concept and philosophy of Air Standard Cycle alongwith associated assumptions and advantages; Air Standard Efficiency; Nomenclature of reciprocating piston-cylinder arrangement with basic definitions such as swept volume, clearance volume, compression ratio, mean effective pressure etc; Otto Cycle (or constant volume heat addition cycle), Diesel cycle (or constant pressure heat addition cycle) and Dual cycle (Mixed or Composite or Limited Pressure cycle) with their representation on P-V and T-S charts, their Air-standard (thermal) Efficiencies; Brayton Cycle, Comparison of Otto, Diesel and Dual cycle under some defined similar parametric conditions; Introduction to heat engines; Merits of I.C. Engines and their important applications, Classification and constructional features of I.C. Engines; working of two stroke and four stroke Petrol and Diesel engines and their comparison.
5. Engineering Materials (05)
Materials and Civilization, Materials and Engineering, Classification of Engineering Materials, Mechanical Properties of Materials: elasticity, plasticity, strength, ductility, brittleness, melleability, toughness, resilience, hardness, machinability, formability, weldability. Properties, Composition, and Industrial Applications of materials: metals (ferrous- cast iron, tool steels, stainless steels and non ferrous- Aluminum, brass, bronze ), polymers (natural and synthetic , thermoplastic and thermosetting), ceramics (glass, optical fibre glass, cements), composites ( fibre reinforced, metal matrix), smart materials (piezoelectric, shape memory, thermochromic, photochromic, magnetorheological), Conductors, Semiconductors and insulators, Organic and Inorganic materials. Selection of materials for engineering applications.
6. Centroid, Centre of Gravity and Moment of Inertia: (08)
Difference between centre of gravity and centroid. Determination of position of centroid of plane geometric figures of I, U, H, L, T, C, Circular and Triangular Sections. Centroid of Composite Areas. Determination of position of Centre of Gravity (CG) of regular solids viz. Right Circular Cone, Solid Hemisphere, thin Hollow Hemisphere. Area moment of inertia & mass moment of inertia, Polar moment of inertia, Parallel axes Theorem (or transfer formula), Perpendicular axes Theorem, Radius of gyration, determination of area Moment of Inertia of I, U, H, L, T, C, Circular and Triangular Sections along various axes. Mass moment of Inertia of Circular Ring, Disc, Cylinder, Sphere and Cone about their axis of symmetry and other axes.
Solved Questions
Solved-
Define enthalpy.Short Answer May-2007 • PTU B-TECH
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May 2015 Define enthalpy.
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Dec 2008 Define enthalpy.
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How is the property of system classified? Explain with example.Short Answer May-2007 • PTU B-TECH
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Dec 2010 How is the property of system classified?
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What are the limitations of first law of thermodynamics?Short Answer May-2007 • PTU B-TECH
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Dec 2016 How does the Second law of thermodynamics overcome the limitation of the First law?
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Dec 2009 What are the limitations of first law of thermodynamics?
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May 2007 How second law of thermodynamics overcomes the limitation of first law?
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How second law of thermodynamics overcomes the limitation of first law?Short Answer May-2007 • PTU B-TECH
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Dec 2016 How does the Second law of thermodynamics overcome the limitation of the First law?
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Dec 2009 What are the limitations of first law of thermodynamics?
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May 2007 What are the limitations of first law of thermodynamics?
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State and write the steady flow energy equation.Short Answer May-2007 • PTU B-TECH
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Dec 2023 Derive steady flow energy equation for a single stream of fluid entering and leaving the control volume.
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May 2019 Derive steady flow energy equation for a single stream of fluid entering and leaving the control volume.
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May 2016 Give the differential form of the steady flow energy equation.
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Dec 2016 State the basic assumptions of steady flow energy equation.
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Dec 2009 Explain and derive steady flow energy equation.
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State the basic assumption in air standard cycle.Short Answer May-2007 • PTU B-TECH
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Draw Brayton cycle on P-V and T-S charts.Short Answer May-2007 • PTU B-TECH
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Differentiate between machine and mechanism.Short Answer May-2007 • PTU B-TECH
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Dec 2016 Differentiate between mechanism and machines.
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May 2015 Differentiate between machine and structure.
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May 2010 Differentiate between machine and mechanism.
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May 2009 Differentiate between mechanism and machine.
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Draw differential pulley lock.Short Answer May-2007 • PTU B-TECH
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Draw stress strain curve for a typical brittle material.Short Answer May-2007 • PTU B-TECH
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May 2015 Draw and explain the stress-strain diagram for mild steel? Also describe how it is different from brittle materials.
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May 2011 Sketch stress-strain curves for ductile and brittle materials and show the salient points on it.
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Dec 2010 Sketch a Stress-Strain for ductile and brittle materials and show the salient point on it.
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Dec 2005 Draw a stress-strain curve for a mild steel specimen.
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The vessel containing 0.8m^3 of gas is compressed by doing 160 KJ of work. The variation in pressure (bar) follows p = 7 – 3v (m^3). Determine final volume and pressure.Long Answer May-2007 • PTU B-TECH
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Convert the following when barometer reads 760 mm Hg: 400 KN/m^3 absolute to KN/m^2 gauge; 50 m Hg vacuum to m Hg and KN/m^2 absolute; 3.1 bar to KN/m^2; 60 KN/m^2 to mm Hg vacuum.Short Answer May-2007 • PTU B-TECH
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The following data pertaining to a steam power plant are given for each state corresponding to the figure shown below. Determine heat transfer in each process and turbine work.Long Answer May-2007 • PTU B-TECH
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A quantity of air at 1 bar and 7ºC is heated at constant volume in a cylinder until its temperature has risen to 827ºC. After this it is expanded isentropically until the pressure falls to 1 bar following which heat is rejected at constant pressure until the temperature is again equal to 7ºC. Determine, per kg of air, the pressure, volume and temperature at the end of each of the operations.Long Answer May-2007 • PTU B-TECH
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May 2011 Air at 1 bar and 7°C is heated at constant volume in a cylinder till its temperature has risen to 821°C. It is then expanded isentropically to 1 bar and subsequently heat is rejected at constant pressure until the temperature is again equal to 7°C. Determine per kg of air: (i) pressure, volume and temperature at the end of each process, (ii) heat supplied to the cycle, (iii) work delivered by the cycle, and (iv) efficiency of the cycle.
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May 2007 A quantity of air at 1 bar and 7ºC is heated at constant volume in a cylinder until its temperature has risen to 827ºC. After this it is expanded isentropically until the pressure falls to 1 bar following which heat is rejected at constant pressure until the temperature is again equal to 7ºC. Determine, per kg of air, the heat input to the cycle.
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May 2007 A quantity of air at 1 bar and 7ºC is heated at constant volume in a cylinder until its temperature has risen to 827ºC. After this it is expanded isentropically until the pressure falls to 1 bar following which heat is rejected at constant pressure until the temperature is again equal to 7ºC. Determine, per kg of air, the work output of the cycle.
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May 2007 A quantity of air at 1 bar and 7ºC is heated at constant volume in a cylinder until its temperature has risen to 827ºC. After this it is expanded isentropically until the pressure falls to 1 bar following which heat is rejected at constant pressure until the temperature is again equal to 7ºC. Determine, per kg of air, the efficiency of the cycle.
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A quantity of air at 1 bar and 7ºC is heated at constant volume in a cylinder until its temperature has risen to 827ºC. After this it is expanded isentropically until the pressure falls to 1 bar following which heat is rejected at constant pressure until the temperature is again equal to 7ºC. Determine, per kg of air, the heat input to the cycle.Short Answer May-2007 • PTU B-TECH
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May 2011 Air at 1 bar and 7°C is heated at constant volume in a cylinder till its temperature has risen to 821°C. It is then expanded isentropically to 1 bar and subsequently heat is rejected at constant pressure until the temperature is again equal to 7°C. Determine per kg of air: (i) pressure, volume and temperature at the end of each process, (ii) heat supplied to the cycle, (iii) work delivered by the cycle, and (iv) efficiency of the cycle.
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May 2007 A quantity of air at 1 bar and 7ºC is heated at constant volume in a cylinder until its temperature has risen to 827ºC. After this it is expanded isentropically until the pressure falls to 1 bar following which heat is rejected at constant pressure until the temperature is again equal to 7ºC. Determine, per kg of air, the pressure, volume and temperature at the end of each of the operations.
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May 2007 A quantity of air at 1 bar and 7ºC is heated at constant volume in a cylinder until its temperature has risen to 827ºC. After this it is expanded isentropically until the pressure falls to 1 bar following which heat is rejected at constant pressure until the temperature is again equal to 7ºC. Determine, per kg of air, the work output of the cycle.
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May 2007 A quantity of air at 1 bar and 7ºC is heated at constant volume in a cylinder until its temperature has risen to 827ºC. After this it is expanded isentropically until the pressure falls to 1 bar following which heat is rejected at constant pressure until the temperature is again equal to 7ºC. Determine, per kg of air, the efficiency of the cycle.
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A quantity of air at 1 bar and 7ºC is heated at constant volume in a cylinder until its temperature has risen to 827ºC. After this it is expanded isentropically until the pressure falls to 1 bar following which heat is rejected at constant pressure until the temperature is again equal to 7ºC. Determine, per kg of air, the work output of the cycle.Short Answer May-2007 • PTU B-TECH
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May 2011 Air at 1 bar and 7°C is heated at constant volume in a cylinder till its temperature has risen to 821°C. It is then expanded isentropically to 1 bar and subsequently heat is rejected at constant pressure until the temperature is again equal to 7°C. Determine per kg of air: (i) pressure, volume and temperature at the end of each process, (ii) heat supplied to the cycle, (iii) work delivered by the cycle, and (iv) efficiency of the cycle.
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May 2007 A quantity of air at 1 bar and 7ºC is heated at constant volume in a cylinder until its temperature has risen to 827ºC. After this it is expanded isentropically until the pressure falls to 1 bar following which heat is rejected at constant pressure until the temperature is again equal to 7ºC. Determine, per kg of air, the pressure, volume and temperature at the end of each of the operations.
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May 2007 A quantity of air at 1 bar and 7ºC is heated at constant volume in a cylinder until its temperature has risen to 827ºC. After this it is expanded isentropically until the pressure falls to 1 bar following which heat is rejected at constant pressure until the temperature is again equal to 7ºC. Determine, per kg of air, the heat input to the cycle.
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May 2007 A quantity of air at 1 bar and 7ºC is heated at constant volume in a cylinder until its temperature has risen to 827ºC. After this it is expanded isentropically until the pressure falls to 1 bar following which heat is rejected at constant pressure until the temperature is again equal to 7ºC. Determine, per kg of air, the efficiency of the cycle.
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A quantity of air at 1 bar and 7ºC is heated at constant volume in a cylinder until its temperature has risen to 827ºC. After this it is expanded isentropically until the pressure falls to 1 bar following which heat is rejected at constant pressure until the temperature is again equal to 7ºC. Determine, per kg of air, the efficiency of the cycle.Short Answer May-2007 • PTU B-TECH
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May 2011 Air at 1 bar and 7°C is heated at constant volume in a cylinder till its temperature has risen to 821°C. It is then expanded isentropically to 1 bar and subsequently heat is rejected at constant pressure until the temperature is again equal to 7°C. Determine per kg of air: (i) pressure, volume and temperature at the end of each process, (ii) heat supplied to the cycle, (iii) work delivered by the cycle, and (iv) efficiency of the cycle.
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May 2007 A quantity of air at 1 bar and 7ºC is heated at constant volume in a cylinder until its temperature has risen to 827ºC. After this it is expanded isentropically until the pressure falls to 1 bar following which heat is rejected at constant pressure until the temperature is again equal to 7ºC. Determine, per kg of air, the pressure, volume and temperature at the end of each of the operations.
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May 2007 A quantity of air at 1 bar and 7ºC is heated at constant volume in a cylinder until its temperature has risen to 827ºC. After this it is expanded isentropically until the pressure falls to 1 bar following which heat is rejected at constant pressure until the temperature is again equal to 7ºC. Determine, per kg of air, the heat input to the cycle.
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May 2007 A quantity of air at 1 bar and 7ºC is heated at constant volume in a cylinder until its temperature has risen to 827ºC. After this it is expanded isentropically until the pressure falls to 1 bar following which heat is rejected at constant pressure until the temperature is again equal to 7ºC. Determine, per kg of air, the work output of the cycle.
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A perfect gas flows steadily through a horizontal cooler. The mass flow rate is 1 kg/s. The pressure and temperature are 2 bar and 400 K at entry and 1.5 bar and 280 K at exit respectively. The cross sectional areas at entry and exit are each 0.01m^2. Using the data given below determine the velocities at the entry and exit.Short Answer May-2007 • PTU B-TECH
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May 2007 A perfect gas flows steadily through a horizontal cooler. The mass flow rate is 1 kg/s. The pressure and temperature are 2 bar and 400 K at entry and 1.5 bar and 280 K at exit respectively. The cross sectional areas at entry and exit are each 0.01m^2. Using the data given below determine the heat transfer rate from the gas.
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A perfect gas flows steadily through a horizontal cooler. The mass flow rate is 1 kg/s. The pressure and temperature are 2 bar and 400 K at entry and 1.5 bar and 280 K at exit respectively. The cross sectional areas at entry and exit are each 0.01m^2. Using the data given below determine the heat transfer rate from the gas.Short Answer May-2007 • PTU B-TECH
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May 2007 A perfect gas flows steadily through a horizontal cooler. The mass flow rate is 1 kg/s. The pressure and temperature are 2 bar and 400 K at entry and 1.5 bar and 280 K at exit respectively. The cross sectional areas at entry and exit are each 0.01m^2. Using the data given below determine the velocities at the entry and exit.
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Cold storage plant requires 6330 KJ/kg (30 tonnes) of refrigerant. Determine power required for the following conditions: Evaporator temperature = -20 ºC; Ambient temperature = 30 ºC; (COP)ref = 25% of ideal cycle COP.Long Answer May-2007 • PTU B-TECH
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Explain the working of two stroke IC engine with neat sketches.Long Answer May-2007 • PTU B-TECH
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Dec 2023 Explain the construction and working of four stroke petrol engine.
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Dec 2019 Explain the working of two stroke petrol engine giving neat sketch.
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Dec 2018 Explain the working of a two-stroke petrol engine with the help of neat sketches. What are the demerits of two-stroke engines?
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May 2016 Write short notes on working of two stroke petrol engine.
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May 2013 Discuss briefly the working of a 4 Stroke Petrol engine.
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May 2012 Describe the working principle of a two stroke petrol engine with a neat diagram.
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Dec 2011 Explain the working of two stroke C.I. engine with the help of neat sketches.
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Dec 2007 Explain the working of four stroke IC engine with neat sketches.
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Derive the expression for the air standard efficiency for otto cycle.Long Answer May-2007 • PTU B-TECH
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Dec 2023 Draw Otto cycle and derive its air standard efficiency and mean effective pressure.
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Dec 2018 Derive an expression for the air standard thermal efficiency of Otto cycle.
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May 2017 Derive the expression for air standard efficiency for Otto cycle. Also draw its PV and T-S diagram.
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Dec 2016 Derive an expression for efficiency and mean effective pressure of Otto cycle.
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Dec 2010 Derive an expression for the air standard efficiency and mean effective pressure of an Otto cycle. State the assumptions made.
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Explain the working of elliptical trammel.Short Answer May-2007 • PTU B-TECH
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May 2015 Describe with neat sketch the working of an Elliptical Trammel.
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May 2010 Explain the working of elliptical trammel.
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A weight of 48 N is to be raised by means of a wheel and axle. The axle is 100 mm diameter and wheel is 400mm diameter. If the force of 16 N has to be applied to the wheel, find mechanical advantage.Short Answer May-2007 • PTU B-TECH
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May 2007 A weight of 48 N is to be raised by means of a wheel and axle. The axle is 100 mm diameter and wheel is 400mm diameter. If the force of 16 N has to be applied to the wheel, find velocity ratio.
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May 2007 A weight of 48 N is to be raised by means of a wheel and axle. The axle is 100 mm diameter and wheel is 400mm diameter. If the force of 16 N has to be applied to the wheel, find efficiency of the machine.
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Dec 2007 A weight of 48 N is to be raised by means of a wheel and axle. The axle is 100 mm diameter and wheel is 400 mm diameter. If the force of 16 N has to be applied to the wheel, find the mechanical advantage.
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Dec 2007 A weight of 48 N is to be raised by means of a wheel and axle. The axle is 100 mm diameter and wheel is 400 mm diameter. If the force of 16 N has to be applied to the wheel, find the velocity ratio.
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Dec 2007 A weight of 48 N is to be raised by means of a wheel and axle. The axle is 100 mm diameter and wheel is 400 mm diameter. If the force of 16 N has to be applied to the wheel, find the efficiency of the machine.
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A weight of 48 N is to be raised by means of a wheel and axle. The axle is 100 mm diameter and wheel is 400mm diameter. If the force of 16 N has to be applied to the wheel, find velocity ratio.Short Answer May-2007 • PTU B-TECH
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May 2007 A weight of 48 N is to be raised by means of a wheel and axle. The axle is 100 mm diameter and wheel is 400mm diameter. If the force of 16 N has to be applied to the wheel, find mechanical advantage.
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May 2007 A weight of 48 N is to be raised by means of a wheel and axle. The axle is 100 mm diameter and wheel is 400mm diameter. If the force of 16 N has to be applied to the wheel, find efficiency of the machine.
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Dec 2007 A weight of 48 N is to be raised by means of a wheel and axle. The axle is 100 mm diameter and wheel is 400 mm diameter. If the force of 16 N has to be applied to the wheel, find the mechanical advantage.
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Dec 2007 A weight of 48 N is to be raised by means of a wheel and axle. The axle is 100 mm diameter and wheel is 400 mm diameter. If the force of 16 N has to be applied to the wheel, find the velocity ratio.
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Dec 2007 A weight of 48 N is to be raised by means of a wheel and axle. The axle is 100 mm diameter and wheel is 400 mm diameter. If the force of 16 N has to be applied to the wheel, find the efficiency of the machine.
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A weight of 48 N is to be raised by means of a wheel and axle. The axle is 100 mm diameter and wheel is 400mm diameter. If the force of 16 N has to be applied to the wheel, find efficiency of the machine.Short Answer May-2007 • PTU B-TECH
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May 2007 A weight of 48 N is to be raised by means of a wheel and axle. The axle is 100 mm diameter and wheel is 400mm diameter. If the force of 16 N has to be applied to the wheel, find mechanical advantage.
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May 2007 A weight of 48 N is to be raised by means of a wheel and axle. The axle is 100 mm diameter and wheel is 400mm diameter. If the force of 16 N has to be applied to the wheel, find velocity ratio.
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Dec 2007 A weight of 48 N is to be raised by means of a wheel and axle. The axle is 100 mm diameter and wheel is 400 mm diameter. If the force of 16 N has to be applied to the wheel, find the mechanical advantage.
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Dec 2007 A weight of 48 N is to be raised by means of a wheel and axle. The axle is 100 mm diameter and wheel is 400 mm diameter. If the force of 16 N has to be applied to the wheel, find the velocity ratio.
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Dec 2007 A weight of 48 N is to be raised by means of a wheel and axle. The axle is 100 mm diameter and wheel is 400 mm diameter. If the force of 16 N has to be applied to the wheel, find the efficiency of the machine.
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Define hardness.Very Short Answer May-2007 • PTU B-TECH
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Define ductility.Very Short Answer May-2007 • PTU B-TECH
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May 2020 Discuss the property of ductility.
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Dec 2020 Discuss the property of ductility.
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Dec 2008 Define ductility.
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Define resilience.Very Short Answer May-2007 • PTU B-TECH
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May 2016 Define the term resilience.
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Define Poisson’s ratio.Very Short Answer May-2007 • PTU B-TECH
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May 2015 Define poisson\'s ratio.
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May 2013 Define Poisson’s ratio.
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May 2009 What is Poisson\'s ratio?
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Define bulk modulus.Very Short Answer May-2007 • PTU B-TECH
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May 2017 Define modulus of elasticity.
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May 2015 Define modulus of rigidity.
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Define shear stress.Very Short Answer May-2007 • PTU B-TECH
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Derive the relation between elastic constants.Long Answer May-2007 • PTU B-TECH
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What do you understand by slider crank mechanism? Explain its working with neat sketch.Long Answer May-2007 • PTU B-TECH
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Write a note on mechanical behaviour of engineering material.Short Answer May-2007 • PTU B-TECH
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Dec 2007 Write a note on mechanical behaviour of engineering material.
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FAQ
Frequently Asked Questions
Answers about this subject, solved papers, and preparation.
01 Where can I find elements of mechanical engineering previous year question papers for Bachelor of Technology, 1st-2nd semester?
This page lists elements of mechanical engineering question papers uploaded for Punjab Technical University Bachelor of Technology, 1st-2nd semester, organized for subject-wise browsing where available.
02 Are these official Punjab Technical University question papers?
BRpaper is not the official website of Punjab Technical University. These papers are shared for reference and revision purposes only and are not official university material.
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Reviewing past papers can help you understand how questions are typically framed, notice commonly repeated topics, and get a sense of the exam pattern before your own exam.
04 What kind of topics does elements of mechanical engineering usually cover?
The question papers here relate to the official elements of mechanical engineering syllabus set by the university for this course and semester.
05 Does this page include a elements of mechanical engineering question bank or solved answers?
This page focuses on providing access to the previous year question papers themselves. A separate question bank or solved answers may not be available for every paper.
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