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A 1500 kW. 3-phase, star-connected 2300 V, 50 Hz synchronous motor has a synchronous reactance of 2 W/phase. The motor is supplied from a 3-phase, star-connected, 2300 V, 1750 kVA turbo generator whose synchronous reactance is 2.8 Ω/phase. When the motor is drawing full-load power, at upf, calculate:
(a) the induced emf of the generator, and
(b) emf of the motor.
What maximum power can flow from the generator to the motor With machine excitations held fixed?
Design a full-adder using only a minimum number of 2x4 decoders. The complements of variables are not available but logic levels 1 and 0 are available.
A 22000 V, 60 Hz generator is connected to the high voltage side of a 22000-2200V, 500 kVA step down transformer. If the resultant core flux is 0.0683 Wb (max), determine: A) the number of turns of wire in the secondary coil.
Find an application note or data sheet that describes a piece of hardware or software that performs Manchester encoding and decoding. Describe the method used for signal encoding, decoding, and clock recovery.
the daily output of a steam power station is 18x105 kwh. If the coal consumption is 700 tons per day calculate the thermal efficiency of power station .assume calorific value of coal 8500 kcal/kg
If a logic circuit with I_OH = 4.5 V is driving and LED with a 330 ohm limiting resistor, what is the current rating for the LED if the forward voltage drop is 1.8 V
A star-bus hybrid topology consists of a main three branch star toplogy with each branch connecting three stations in a bus topology. This toplogy is changed to a new bus-ring hybrid topology with main five station bus topology.
What peak value of AC current is required to produce the same amount of heat B) What rms, or effected value, of AC current is requiredto produce the same amount heat
Determine the peak voltage of the full-wave bridge rectifier, shown in Fig. 3.3a, assuming the diodes are ideal but have a forward voltage drop (offset voltage) of 0.7 V. The input voltage is 120 VAC.
A charged particle (charge q, mass m) is moving under the influence of a magnetic field B = B0 az. If the velocity vector of the particle is v = v a ax +- vy ay + vx az Show that the acceleration of this particle lies in the x-y plane.
Using mesh analysis, determine the current through the 5-Ω resistor for each network of given figure.- Then determine the voltage Va.
A60-Hz induction motor is needed to drive a load at approximately 850 rpm. How many poles should the motor have? What is the slip of this motor for a speed of 850 rpm?
Briefl y describe the main conceptual differences between DRAM and SDRAM.
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