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If the load on the line described in Prob. 6.14 is 80 M\V at 220 kV, with unity power factor, calculate the current, voltage, and power at the sending end. Assume that the sending-end voltage is held constant and calculate the voltage regulation of the line for the load specified above.
Prob. 6.14
A three-phase, 60-Hz transmission line is 250 mi long. The voltage at the sending end is 220 kV. The parameters of the line arc R = 0.2 Ω/mi, X = 0 .8 Ω/mi, and Y = 5.3, μS/mi. Find the sending- end current when there is no load on the line.
The motor drives a load that requires constant torque. Assume that RA = 0. The resistances in the field circuit are RF = 50Ω and Radj = 25Ω. Find a new value for Radj so that the speed becomes 1200 rpm. What is the slowest speed that can be achiev..
Why are standards so important for NICs, connectors, and media
Assume that we have an image represents a sinusoidal variation orthogonal to the x-axis with amplitude of 10 and period of 1 cm, that repeats infinitely in all directions within the plane. Further assume an average intensity of 10.
How could risk management have aided in the development of the common What are the elements of direct labor costs and how should they be computed Explain the difference between recurring and nonrecurring costs as well as fixed versus variable costs
Design a simple unipolar drive circuit such that the electrical time constant is 2 msec at phase turn-on and 1 msec at turnoff. The stepping rate is 300 steps per second. A three-phase variable-reluctance stepper motor has parameters.
An extension cord is used with an electric weed trimmer that has a resistance of 13.7 O. The extension cord is made of copper (resistivity 1.72 x 10-8 ohm m) wire that has a cross-sectional area of 1.20 x 10-6 m2.
Looking at feedback and some Opamp problems, If the unity gain frequency is 5 MHz and the midband open-loop voltage gain is 200,000, what is the cutoff frequency?
A box of mass 20kg is slid down a ramp inclined at 20 degree with an initial speed of 5 m/s. If the box stops after 10 m, what was the coefficient of kinetic friction between the box and the ramp
Given the following voltage and current expressions, show the expression for the voltage across R2 in the circuit Note, R1=100 ohm, R2=300 ohm, and R3=200 ohm: a) v(t) = 10 cos (377t + pi/4) V b) i(t) = 5 cos (754t - pi/3) mA
design an 8-bit programmable microprocessor-compatible TIMER IC by doing the following steps: Specify, draw , and clearly label( the functional name), the complete set of 8-bit registers that will be needed in the TIMER.
Shielding Effectiveness with copper and steel at equality, Determine the frequency at which two 1 mm thick shields, one made of copper and the other of steel
Determine the RMS generated voltage of an alternator used for a 50 Hz system if it has a flux per pole of 0.015 Wb, 72 turns per phase and a winding constant of 0.96
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