Business Management

Author: Haroon Khalil

  • Centroid of C-section

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    Haroon Khalil
    in

    The T-section, shown in Figure 11.8, can be divided into two parts: lower and upper parts of area A1 and middle part of area A2. The lengths and widths of all the parts of L-section are shown in Figure 11.8. Let the X and Y coordinates pass through origin O. Figure 11.8 C-section The coordinates for centroid can be calculated using the following formula:

  • Centroid of T-section

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    by

    Haroon Khalil
    in

    The T-section, shown in Figure 11.7, can be divided into two parts: lower part of area A1 and upper part of area A2. The lengths and widths of all the parts of L-section are shown in Figure 11.7. Let the X and Y coordinates pass through origin O. Figure 11.7 T-section The coordinates for centroid can be calculated using the following formula:

  • Centroid of H-section

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    by

    Haroon Khalil
    in

    The H-section, shown in Figure 11.5, can be divided into three parts: left and right parts of area A1 and central part of area A2. The lengths and widths of all the parts of H-section are shown in Figure 11.5. Let the X and Y coordinates pass through origin O. Figure 11.5 H-section The coordinates for centroid can be calculated using the following formula: In the case of…

  • Centroid of H-section

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    by

    Haroon Khalil
    in

    The H-section, shown in Figure 11.5, can be divided into three parts: left and right parts of area A1 and central part of area A2. The lengths and widths of all the parts of H-section are shown in Figure 11.5. Let the X and Y coordinates pass through origin O. Figure 11.5 H-section The coordinates for centroid can be calculated using the following formula: In the case of…

  • Centroid of U-section

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    Haroon Khalil
    in

    The U-section shown in Figure 11.4 can be divided into three parts—lower part of area A1 and two upper parts of area A2. The lengths and widths of all the parts of U-section are shown in Figure 11.4. Let the X and Y coordinates pass through origin O. Figure 11.4 U-section The coordinates for centroid can be calculated using the following formula:

  • Centre of Gravity, Centre of Mass, and Centroid of an Irregular Shape

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    Haroon Khalil
    in

    In Figure 11.1, an irregular shape is shown for which we want to calculate the centre of gravity, centre of mass, and centroid. Here, our purpose is to differentiate the concepts of these three different terms. It is assumed that the irregular shape, as shown in Figure 11.1, is of uniform thickness, density, and subjected to uniform gravitational field.…

  • INTRODUCTION

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    Haroon Khalil
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    The centroid of an area is the mean position of elements of area. The coordinates of centriod is mean value of coordinates of all the elemental points in the area. The centre of mass is the mean position of elements of mass. In a uniform gravitational field, the gravitational force acts through the centre of…

  • AXIAL FLOW COMPRESSORS

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    Haroon Khalil
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    In axial flow compressors, the flow proceeds throughout the compressor in a direction essentially parallel to the axis of the machine. The unit consists of adjacent row of rotor blades and stator blades. One stage of the machine comprises a row of rotor blades followed by a row of stator blades. For efficient operation, the…

  • CENTRIFUGAL COMPRESSORS

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    Haroon Khalil
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    In these compressors the pressure rise takes place due to the continuous conversion of angular momentum imparted to the gas by a high-speed impeller into static pressure. Unlike reciprocating compressors, centrifugal compressors are steady flow devices hence they are subjected to less vibration and noise. Figure 10.9 shows the working principle of a centrifugal compressor. As shown…

  • Multiple Vane Type Rotary Compressors

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    Haroon Khalil
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    In multiple vane type compressors, the axis of rotation coincides with the centre of the roller (O); however, it is eccentric with respect to the centre of the cylinder (O’) as shown in Figure 10.8. The rotor consists of a number of slots with sliding vanes. During the running of the compressor, the sliding vanes are held…