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an electric motor operates at 220V rms ,60 Hz, draws 20A rms, and has a power factor of 0.75 lagging.
a) what is average power absorbed by the motor?b) what value capacitor should be connected in parallel with the motor to give a power factor of 1?
How much torque is this motor producing. What is the torque angle. How near is this value to the maximum possible induced torque of the motor for this field current setting.
Compute the equilibrium carrier concentrations and the position of the Fermi level with respect to the conduction band edge for a uniformly doped Si region with N_D=1*10^16 cm^-3 and N_A = 1*10^17 cm^-3 at room temperature.
(a) Write f as a minterm list (that is, in the form fm(*)). (b) Write f as a canonical sum-of-products. (c) Simplify the expression from part (b). (d) Write f as a maxterm list (that is, in the form fM(*)). (e) Write f as a canonical product-of-sums...
The series combination of a 4=mu F and a 3mu F capacitor is in series with the parallel combination of a 2 mu F, a 1 ? mu F, and a C - mu F capacitor, (a) What is the maximum possible value for the equivalent capacitance of the five capacitors
The following functions describe the oscillations in electric circuits and the vibrations of machines and structures. Plot these functions on the same plot. Because they are similar decide how best to plot and label them to avoid confusion.
A mummy picks up a calculator and starts adding odd whole numbers together, in order: 1+3+5+... etc. What will be the last number the mummy will add that will make the sum on his calculator greater than 10,000
The resistance of the shunt field winding and the resistance setting of the shunt field rheostat of a separately excited generator are 10.26 ohm and 14.23 ohm respectively. The field circuit is connected to a 120-V DC source.
A 100V dc series motor has an armature resistance of 0.2 ohm and field resistance of 0.25 ohm. The motor runs at a speed of 600 rev/min when the shaft torque is 27.14 Nm. Friction and windage losses at this speed are 300W.
Let O be a measurement operator for the of dots facing upwards on a 6-sided 'quantum' die-- a die that can be put into superpositions of states and then measured. The set of possible outcomes is {1,2,...6}.
Suppose that random samples of size 36 are repeatedly drawn from a population with mean 28 and standard deviation 9. Describe the sampling distribution X var.
Write C++ statements that accomplish each of the following: a. Declare and initialize int variables x to 25 and y to 18. b. Declare and initialize an int variable temp to 10 and a char variable ch to 'A'. c. Add 5 to the int variable x which alrea..
Reduce the two functions given below and implement them using fewest 8x2 ROM's. Draw a neat labeled diagram showing interconnection between the ROM's address and data lines, and content of each ROM.
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