popular ac motor performance is affected by following type of faults. 1. ELECTRICALLY RELATED FAULTS (33%): The faults under this classification are single phasing‚ over/under voltage‚ overload over temperature. 2. MECHANICAL RELATED FAULTS (32%): The rotor winding failure‚ stator winding failure and bearing faults are most occurring mechanical faults in 3 phase induction motor. 3. ENVIRONMENTALLY RELATED FAULTS (15%): The external moisture‚ contaminations and ambient temperature also affect the induction
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Definition of Wind Energy “Wind Energy - Energy received from the movement of the wind across the earth. This energy is a result of the heating of our oceans‚ earth‚ and atmosphere by the sun. Turbines convert the kinetic energy of wind into mechanical or electrical energy that can be used for power.” The German physicist Albert Betz calculated in 1919 the possible maximum amount of energy that can be extracted out of wind energy. He came to the result of 59.3% that can be extracted and named this
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Compressors are similar to pump‚ both increase the pressure on a fluid and both can transport a pipe. As gases are compressible‚ the compressor also reduces the volume of a gas. Liquids are relatively incompressible‚ while some can be compressed‚ the main action of a pump is to pressurize and transport liquids. Types of compressors The main types of compressors are shown below: Compressor types Positive displacement Dynamic 1. Reciprocating. 2. Rotary 1.Centrifugal. 2. Axial
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Grade 9 Task Term 3 Hydraulics and Pneumatics Section: A 1. a) Good examples of hydraulic systems include automotive brakes‚ and the control systems of large aircraft. Hydraulic systems supply forces somewhere remote from where it is practical to locate large machinery. Hydraulics gives high forces with low losses‚ thanks to the virtual incompressibility of hydraulic fluids. Pneumatics is usually less efficient‚ though simpler since the "reservoir" in the circuit is the atmosphere
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ELECTRICAL DEPARTMENT Superintendent: Mr. Antonio B. Panaligan Shift Supervisor: Rodolfo Francisco Jerome de Torres Sol Esteban Buhay Power Plant Assistant: Florencio Padilla Rodel Alfaro Arnedo Mendoza T/G & D/G Tender: Renato Morales Reynaldo Bautista Edgardo Escalona BOILERS DEPARTMENT Superintendent: Engr. Simon P. Turno III Shift Supervisor: Gerry A. Ferrer Roberto C. Alindugan Ronilo Edwardo Malabanan Assistant Supervisors: Ernie Abrenica Jayarvin Dalangin
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low price‚ the Goodrich bid carried a second attractive feature: The brake described in its bid was small; it contained only four disks (or "rotors") and would weigh only 106 pounds. Weight was of course an important factor for Ling-Temco-Vought‚ since the lighter the Air Force plane turned out to be‚ the heavier the payload it could carry.2 The four-rotor brake was designed primarily by John Warren‚ an engineer who had been with Goodrich for seven years. As senior project engineer‚ Warren was directly
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How a windmill works Parts of the windmill Figure E21.2.1 shows the important parts of a windmill. The wind is shown heading perpendicular toward the hub and blade assembly (this example uses three blades‚ but some use only two‚ and‚ as Fig. 21.7 shows‚ some use many blades). Fig. E21.2.1 A view of a horizontal axis wind energy machine. (U.S. Department of Energy‚ Ref. 30) Energy‚ Ch. 21‚ extension 2 How a windmill works 2 Wind machines come in two basic types—horizontal axis or
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measuring he flow rate of an incompressible fluid namely; 1- Venturi metre 2- Orifice plate 3- Rotor metre * To compare the accuracy of each device. * To give insight into appropriate industrial application for each device. 2. Theory: Water enters and first flows through the Venturi metre‚ then through the Orifice plate and then through the Rotor meter. On leaving the Rotor meter the water flows via a control valve to the weigh-tank of the hydraulic bench. At the inlet and the
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the interaction of two magnetic fields. One field is produced by a permanent magnet assembly; the other field is produced by an electrical current flowing in the motor windings. These two fields result in a torque which tends to rotate the rotor. As the rotor turns‚ the current in the windings is commutated to produce a continuous torque output. The stationary electromagnetic field of the motor can also be wire-wound like the armature (called a wound-field motor) or can be made up of permanent magnets
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movement. Without hydraulics‚ the crew was forced to attempt a landing without flaps‚ slats‚ flight controls‚ or landing gear. The crew was eventually able to deploy landing gear‚ which managed to manually lock into place. Failure of the stage 1 fan rotor assembly was attributed to the development of a fatigue crack in the titanium alloy which developed over 17 years. A metallurgist inspector with the NTSB found the titanium alloy piece‚ which unimaginably broke into two pieces‚ had elements of nitrogen
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