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  • Boot strap and Reduced Ambient Aircraft Cooling Systems

    Boot strap and Reduced Ambient Aircraft Cooling Systems

    Boot Strap Air Refrigeration System: Two systems Without evaporative cooling, With evaporative cooling       FIG. BOOT STRAP SYSTEM ON TEMPERATURE ENTROPY CHART In this, there are two compressors, two heat exchangers and one turbine. Normally second compressor is run by the expansion turbine. In case of evaporative cooling in Boot strap, another water […]


  • CLOSE COILED HELICAL SPRING -AXIAL TORQUE

    CLOSE COILED HELICAL SPRING -AXIAL TORQUE

    CLOSE COILED HELICAL SPRING -AXIAL TORQUE This torque will rotate the free end with respect to the fixed end. Thus it will change the coil diameter and will be mainly producing the bending effect. Therefore such springs are designed on the basis of pure bending. Further helix angle ‘α’ is small. Let φ be the […]


  • MCQ FIRST LAW OF THERMODYNAMICS

    MCQ FIRST LAW OF THERMODYNAMICS

    MCQ FIRST LAW OF THERMODYNAMICS Total energy of the universe is (a) Increasing (b) Decreasing (c) Increasing as well as decreasing (d) None Ans: (d) As per First Law of Thermodynamics, energy can be (a) Created (b) Destroyed (c) Created as well as destroyed (d) None Ans:(d) As per First Law of Thermodynamics, energy cannot […]


  • Home Page -1

    Home Page -1

    Home Page -1 M E Subjects – Mechanical Engineering Concepts Simplified Various topics of Mechanical Engineering presented here are in a simple manner. Following courses can be easily understood as it is based on our vast teaching experience. Anybody can make things complex. It is really very difficult to make things/topics simple. Such an attempt […]


  • Fluid Mechanics- Introduction

    Fluid Mechanics- Introduction

    FLUID MECHANICS-Introduction Fluid Mechanics is a science which deals all aspects of  fluids whether in motion or static. Fluid is a common name to liquids, vapors and gases. Three parts of fluid mechanics (a) Fluid statics deals with forces applied by fluids at rest. This fluid force is pressure. Pressure is a normal force exerted […]


  • ptu-som-ii-5-marks-question-answers

    ptu-som-ii-5-marks-question-answers

    PTU SOM II 5 marks Question Answers Compare the strains produced in a body subjected to same amount of load when applied gradually and suddenly. ANS: Let ‘P’ be the gradually applied load and ‘a’ is the area of cross section of the body. Then stress = P/A When same load is applied suddenly, its […]


  • ptu-som-ii-2-marks-question-answers

    ptu-som-ii-2-marks-question-answers

    PTU SOM II 2 marks Question Answers   Q. What is the energy of distortion or shear strain energy? ANS: Every object in universe is under a number of forces. Thus it is under complex loading. From the complex loading, one can determine the three principal stresses σ1, σ2 and σ3 respectively. ASSUME (i) these […]


  • Mcq-Stresses-in-Rotating-Discs

    Mcq-Stresses-in-Rotating-Discs

    MULTIPLE CHOICE QUESTIONS ON STRESSES IN ROTATING DISC The major stresses in a rotating disc are σh and σl hoop σh and σr σr and σl None ANS (b) Stresses in a rotating disc are considered only at Low speed Medium speed High speed None ANS: (c) Types of rotating discs are Hollow and trapezoidal […]


  • MCQ- INITIALLY CURVED BEAMS

    MCQ- INITIALLY CURVED BEAMS

    MCQ- INITIALLY CURVED BEAMS   Centroidal and neutral axes of an initially curved beam are Intersecting Coincident Parallel None ANS© Distance between the centroidal axis and neutral axis is represented by X Y Z None ANS: (d) Maximum stress in an initially curved beam is in the Innermost fiber Outermost fiber Innermost as well as […]


  • PROJECTION OF POINTS-Short Question Answers

    PROJECTION OF POINTS-Short Question Answers

    PROJECTION OF POINTS- Short Question Answers Projection of a point is used to show the location of a light or a fan point in a building drawing. Two points forms a line. Refer https://www.mesubjects.net/wp-admin/post.php?post=6090&action=edit https://www.mesubjects.net/wp-admin/post.php?post=7302&action=edit Q. Describe the position of points in the various quadrants and its projections with respect to the reference line xy. A. […]