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A 50-Hz synchronous salient pole generator is driven by a hydro-electric turbine at a speed of 125 rpm. There are 576 stator slots with two conductors per slot. The air-gap diameter is 6.1 m and the stator length is 1.2 m. The sinusoidally distributed flux density has a peak value of 1.1 T.
(a) Calculate the maximum rms single-phase voltage that can be produced by suitably connecting all the conductors.
(b) Find the per phase emf if the conductors are connected in a balanced 3-phase winding.
Air flows over the top and bottom surfaces of the plate, and measurement of the heat transfer rate is 2000 W. What is the drag force on the plate?
A 3-phase motor has coils wchich can be configured in a Y load. If each load phase has an impedance of 8+j6 ohms determine the power taken by the motor when supplied by a balanced 3-phase voltage source of 440V line to line.
Find the maximum electrostatic stress in the cable, minimum electrostatic stress in the cable, capacitance of the cable per km length and charging current.
What will be the total impedance of a series circuit having a resistor of 100 ohms, an inductor of 200 ohms reactance, and a capacitor of 300 ohms reactance. Also, what will be the dissipated power when voltage source is 10sin1000t.
What is the smallest magnitude of compensating ramp that will yield stable dynamics for the ripple instability over an input voltage range of 36 V
Determine the corona lossof a three phase, 220kV, 50 Hz and 200km long transmission line of three conductors each of radius 1 cm and spaced 5m apart inequilateral triangle formation. The air temperature is300C and the atmospheric pressure is 760mm..
A filter has a transfer function. -Is this filter, lowpass, highpass, or bandpass? - Find the noise equivalent bandwidth of this filter.
Pulse Generator, Using one 555 timer, design a pulse generator that will have the following continuously variable ranges
Design a Bethe hole coupler of the type shown in Figure 7.16b for a Ku-band waveguide operating at 17 GHz. The required coupling is 30 dB.
A 460-V, three-phase,60-Hz system supplies power to a 10-kVA, delta-connected resistor load; a 50-kVA, 0.86 power factor induction motor, and a wye-connected synchronous motor that is operating at 0.62 power factor leading
What are the impedances of an inductor and a capacitor (of any value) at a frequency of 0 Hz (DC) and at infinite frequency. Once we know what they are , how can this information help us in analyzing a circuit.
1. Describe the similarities and differences between the three different types of polyphase AC motors. 2. Describe five (5) benefits of using a 3-phase motor compared to a single-phase motor.
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