Author: workhouse123
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TERMINOLOGY USED IN GOVERNORS
There are some general terms used in governors that describe qualities of governor. These terms are as follows:
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INTRODUCTION TO GOVERNORS
Governor takes care of the change of speed due to load variation over periods of the engine’s running and tends to keep it as close to the mean speed as possible, where as the flywheel is responsible only in keeping the speed fluctuations, during each cycle within certain permissible limits of the mean speed. As…
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MASS MOMENT OF INERTIA OF FLYWHEEL
The function of the flywheel is to store excess energy during power stroke and it supplies energy during other stroke. Thereby, it reduces fluctuation in the speed within the cycle. Let ω1 be the maximum angular speed and ω2 be the minimum angular speed. I be the mass moment of inertia of the flywheel neglecting mass moment of inertia of…
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INTRODUCTION
Flywheel is an internal energy storage device. It absorbs mechanical energy during the period when the supply of energy is more than the requirement and releases it during the period when the requirement of energy is more than the supply. The main function of a fly wheel is to smoothen out variations in the speed…
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Centroid of Semicircular-Section of a Disc
Considering a semicircle of radius R as shown in Figure 11.10. Due to symmetry centroid must lie on y-axis. Let its distance from the x-axis be . To find , consider an element at a distance r from the centre O of the semicircle, radial width dr, and bound by radii at θ and θ + dθ. Figure 11.10 Centroid of Circular Section of a Disc Area of the element = rdθ dr. Its…
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Centroid of Circular Arc
Centroid of an arc of a circle, as shown in Figure 11.9, has length L = R·2α. Let us consider an element of the arc of length dL = Rdθ. Figure 11.9 Centroid of Circular Arc
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Centroid of C-section
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…
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Centroid of T-section
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:
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Centroid of L-section
The L-section, shown in Figure 11.6, 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 11.6. Let the X and Y coordinates pass through origin O. Figure 11.6 L-section The coordinates for centroid can be calculated using the following formula:
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Centroid of L-section
The L-section, shown in Figure 11.6, 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 11.6. Let the X and Y coordinates pass through origin O. Figure 11.6 L-section The coordinates for centroid can be calculated using the following formula: