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The stator and rotor of a three-phase, 440-V, 15-hp, 60-Hz, eight-pole, wound-rotor induction motor are both connected in wye and have the following parameters per phase: R1 = 0.5 , R2 = 0.1 , Xl1 = 1.25 , and Xl2 = 0.2 . The magnetizing impedance is 40and the core loss impedance is 360 , both referred to the stator. The ratio of effective stator turns to effective rotor turns is 2.5. The friction andwindage losses total 200 W, and the stray-load loss is estimated as 100 W. Using the equivalent circuit, calculate the following values for a slip of 0.05 when the motor is operated at rated voltage and frequency applied to the stator, with the rotor slip rings short-circuited: stator input current, power factor at the stator terminals, current in the rotor winding, output power, output torque, and ef?ciency.
Q. (a) An audio amplifier with R i = 10 k, R o = 0, and ¯A(ω), as shown in Figure (a), is used in the circuit shown in Figure with R S = 1 k,R L = 16 , and C = 0.2 µF. Sk
Define the Objectives of Load Flow Analysis The objectives of load flow analysis are: (i) To analyse an existing power system, future expansion or a new power system plan.
Self Inductance If a current is passed through a coil, it creates a flux within the coil. Any attempt to change this flux will create a back emf that acts to oppose the chang
Q. What are the conditions required to be fulfilled to sustain the oscillations? The conditions required to be fulfilled to sustain the oscillations are: 1. The loop gain mu
Testing for Continuity : You may have observed sometimes that when all the connections in the appliance as well as the plug are made properly the appliance may still not work. Thi
Find the Thévenin equivalent for the attached circuit and use this to calculate the current in the load. Circuit information:- Load consists
Solenoids find application in a variety of electrically controlled valves. The magnetic structure shown in Figure is a simplified representation of a solenoid in which the flux in
The direction of the magnetic field lines is given by 'Maxwell's Right-Hand corkscrew rule' The thumb of the right hand indicates the direction of current flow in the wire and
how a combination clipper works?
Need a project in Optoelectronic with simulation in Optispice or Matlab.with complete report and presentation. ANy ideat about project and how much does it cost.
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