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How many turns does a coil have if 42 mV are induced across the coil by a change of flux of 0.003 Wb/s?
The basic sampling rate for the compact disc (CD) recording industry has been set at 44.1 kHz. (a) Determine the highest frequency of the analog signal that could theoretically be reconstructed from this sampling rate.
Calculate (by hand) the average output voltage, the Fourier series expressions of the currents, ia, ia1 and ia2 comment on the input line current harmonics.
A twelve pole, 480V, 60Hz synchronous motor has a reactance of 5 ohm. The field current is adjusted so that the equivalent field voltage Ef is 520V (line-to-line). Calculate the following: (a) Maximum torque. (b) Power factor at the maximum torque..
Prepare a presentation in which you will highlight at least FIVE features of the system that have been/could be improved by the application of lean. Prepare a drawing of the system with the before and after analysis.
1. The net charge through a cross section of a circuit element is given by q(t)=2t+t^2 C. As usual, t is in seconds. Find the current through the element in amperes. 2. the current through a given circuit element is given by i(t)=2e^-t A. As usual..
As speed increases, the lower lamp, L1 lights, then L1 and L2, then, L1, L2, and L3, until all lamps light at the highest speed. Once all the lamps illuminate, no further increase in speed will have any effect on the display.
A group of small appliances on a 60Hz system requires 20 kVA at 0.85 pf lagging when operated at 125V (rms). The impedance of the feeder supplying the appliances is 0.01 + j0.08 Ohms. The voltage at the load end of the feeder is 125V (rms).
Compute the energy in BTU and kWh to heat 1000 lb of water from 77°F to 100°F - How much coal will be needed to burn for the same job?
A two-resistor voltage divider consists of a 10 k and a 15 k ohm resistor, with the 10 k resistor connected to the voltage source and the 15 k resistor connected to ground. If the output voltage is 2.5 V across the 10 k resistor
An infinite sheet of surface current density given by (equation 1) A/m exists on a plane defined by x=1. A second infinite sheet of surface current density given by (equation 2) is on the plane defined by x = -2. What is the magnetic field intensi..
Compute the power absorbed by an element in a circuit, but for a simple sinusoidal current i = sin(2πt/T) where T = 1 s.
pressure limits of 10 kPa and 8 MPa, with reheat occurring at 4 MPa. The temperature of steam at the inlets of both turbines is 500°C, and the enthalpy of steam is 3185 kJ/kg at the exit of the high-pressure turbine
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