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A separately excited DC generator,when running at 1200 RPM, supplies 200A at 125V to a circuit ofconstant resistance. What will the current be when the speed is reduced to 1000 RPM if the field curr
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;
based upon the Norton thevenin equivalentcircuits (Method of short circuit through nodal analysis) When there is a short circuit present, any resistor in parallel will not have current running through
Voltage and current measurement taken for a 3- phase Wye- connected alternator indicate a line voltage of 208 V and a line current of 20 A. What is the value of the phase voltage and phase current
1- Describe how the MOSFET acts as a switch. What could bedone to make the MOSFET ON when the square wave is negative and OFF when the square is positive 2- How is the magnitude of the control volta
1- Name a few computer operating systems. 2- What is the full form for MS-DOS 3- What is the difference between a logical address and aphysical address
When the motor runs at 1710 rpm, the line currentdrawn from the supply is 78 A at 0.85 PF lagging. Given that,stator iron loss is 2kW, windage and friction losses are 1.2kW andresistance between two
a. calculate n and p using theexact solutions found above at T = 200K, 300K, 500K and 700K. b. calculate n and p using theapproximate solutions given in the lecture at T = 200K, 300K, 500K,and 700K. c
The rectifier outputvoltage ripple factor must not exceed 5%. In your design, assumethe voltage variation during discharging period is linear and theoutput voltage ripple frequency is twice the sour
An n-type semiconductor is known to have an electron concentration of 5 × 10 ^17 m-3 . If the electron drift velocity is 350 m/s in an electric field of 1000 V/m, calculate the conductivity of
The National Electrical Code specifies, among otherthings, values for the minimum allowable cross-sectional area ofconductors for a given voltage and allowable total length ofcircuits depending on t
A circuit is needed to divide a 10 Hz signal down to 1 Hz. using only a 7493 4 bit counter produce a logig diagram for both designs , hook the clock input to a 10 Hz clock on the logic designer and
A 230V, 25hp, shunt DC motor draws an armature current of 90Aat full rated load. The armature resistance is 0.2 ohms and theshunt field resistance is 216 ohms. Determine the rotational lossesand mot
A 600V, 150hp, DC series motor operates at it's full-ratedload at 600 RPM. The armature resistance is 0.12 ohms and the series field resistance is 0.04 ohms. The motor draws 200A at full load.
A shunt DC generator has a termianl voltage duringopen-circuit of 127V. When the machine is operating at rated load,the rated terminal voltage is 120V. Find the load current ifthe field resistance i
A separately excited DC generator,when running at 1200 RPM, supplies 200A at 125V to a circuit ofconstant resistance. What will the current be when the speed is dropped to 1000 RPM if the field curr
If the change in voltage is assumed to be linear between no-load and full-load kilowatts, calculate the kilo watt output of the generator when the terminal voltages are 240V and 235V.
Describe how I/O ports are accessed in system that uses Memory-Mapped I/O and how they are accessed in a system that uses Direct I/O. List the advantages and disadvantages of each type of port addre
Assuming that an ARM-based processor register containsox12345678, show the order in which the bytes of this word would be written in memory starting at address 0x00000000 in a machine that uses Litt
A circular ring of charge of radius a lies in the x-y plane and iscentered at the origin. If the ring is in air and carries a uniform density ρl show that the electric potential at(0,0,z) is giv
Hecreates a frequency spectrum and plots it. He observes a peak inthe spectrum at 105 Hz. With just one sampling rate, however, Jared cannot be sure that this is the true or actual frequency compone
Show that your result reduces tothe expression given by E = D / ε0 = rDr / ε0 = r ρl /2πε0r as the length L is extended toinfinity. (r is properly defined as the radia
Determine the Fourier series coefficients for the following discrete-time periodic signal. Plot the magnitude and phasefor each set of coefficients ak x[n] = sin(2πn/3)*cos(πn/2)
A system has power gain of 52. Directivity is measured as 90 and the dissipated power in an antenna with a gain of 700 is 1.9 watts. what is the EIRP in watts and dBm
Your circuit should output a signal X that can be used to turn a buzzeron or off, where high implies on. The buzzer should be on if theignition is on and if the door is open or the seat belt is not