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A Dc machine is connected across a 240-volt line. It rotates at 1200 rpm and is generating 230 volts. the armature current is 40amps.A) Is the machine functioning as a generator or motor?B) Determine the resistance of teh armature circuit.C) Determine the power losss in the armature circuitresistance and the electromagnetic power.
A triangular periodic signal g(t) has an average value of zerovolts, peak to peak magnitude of 20 volts and a period T = 2seconds. Derive the average power of this waveform. Derive its rms value.
Suppose a signal from a vibrating motor is to be sampled discretelywith a digital data acquisition system to determine the RPM of the motor. It is known that the maximum possible RPM is 1800.
If the work output is 10kW, find the required heat transfer rate from the high to the low temperature source, and the required heat transfer rate to the low temperature source. What is the themal efficiency of the engine
Use contraction beginning with a 4-bit adder with carry out to design a 4-bit increment-by-2 circuit with carry out that adds the binary value of 0010 to its 4-bit input. The function to be implemented is S=A+0010.
a)What is the voltage across a 220? resistor if the current through it is 5.6 mA b)What is the current through a 6.8? resistor if the voltage drop across it is 24 V c) What is the power delivered by a 6 V battery if the current drain is 750mA
Determine the relative probability of finding the electron at the distance (a) 12 A beyond the barrier, and (b) 48 A beyond the barrier, compared to the probability of finding the incident particle at the barriers edge. Plot the wave function for ..
A rectangular patch has length 13 cm and width 0.8*13 cm and is supported by a dielectric substrate with relative permittivity 4. What is (approximately) the resonance frequency (in GHz) of the patch antenna
A SEMICONDUCTOR IN THERMAL EQUILIBRIUM, HAS A HOLE CONCENTRATION OF P0=1016 CM-3 AND AN INTRINSIC CONCENTRATION OF Ni =1010 CM-3. THE MINORITY CARRIER LIFE TIME IS 4*10-7s.
Determine the Thevenin equivalent of the network shown on the left and determine the current - determine the complex power generated by the (ideal) 400V source.
Explain Capacitance of parallel plates capacitor, Relative permitivity is 500, The area is one square meter, The distance between the plates is 0.001 meters
A 75 kW, 8 pole star connected induction motor operates froma 415 V, 50 Hz supply and draws 140 A when supplying full load.Determine: 1. the synchronous speed Ns;
When a forward bias is applied across a junction is the increased current flow due to movement of the Fermi level closer to the band edge or to lowering of the potential barrier. If you want to increase the space charge width on the n side of a p,n..
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