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A three phase star connected alternator has synchronous impedance of 1+j10ohms per phase. It is operating at a constant voltage of 6.6kV and its field current is adjusted to givean excitation voltage of 6.4kV. Find the power output, armature current and power factor under the conditions (a) maximum power input (b) maximum power output.
A random variable X has a variance of 9 and a statistically independent random variable Y has a variance of 25. Their sum is another random variable Z=X+Y. Without assuming that either random variable has a zero mean
The steady-state response is due to simple poles in the j axis of the s-plane coming from the input. Suppose the transfer function of the system is: H(s)=Y(s)/X(s)= 1 / (s+1)^2 + 4 a. Find the poles and zeros of H(s) and plot them in the s-plane.
What is the reliability, the equivalent MTBF value, and the equivalent failure rate for a system that has a primary microprocessor circuit board and a secondary microprocessor circuit board that is hooked up in standby redundancy
A small gasoline engine can put out 18,000 N-m/min of mechanical power. The engine is used to drive an electrical generator that is 80 percent efficient. 1 N-m = 2.78 X 10-4 W-h. Find the output of the generator in Watts.
1. What is the force on a 10 cm wire carrying 1.0 A in a uniform magnetic field of 500 gauss 2. In the above example, if the current is in a loop of width 6.0 cm and the coil lies in the plane of magnetic flux, what is the torque on the loop
determine the following by sloving laplace equations: a) the potential and electric field distribution in the dilectric slab. b) the potential and electric feild distrivution in the air space between the dilectric slab and the upper plate and c) t..
How big will be rated power of the motor if starting current at star-connection and phase to phase voltage of the supply 380 V is (150+17) A. the ratio of starting current for motor is 7 Ir efficiency factor is 0.85 but cos f =0.8
Find its unit step response when the ICs are y[-2] = 2 and y[-1] = 1. Be sure to identify the three parts of the solution: zero-input, transient zero-state, and steady-state zero-state.
1. Explain the basic principles of classical conditioning using an experiment to illustrate how the principles are used. 2. In the operant conditioning school of behaviorism, what is partial reinforcement. Explain the four main kinds of partial rein..
According to the Merriam-Webster dictionary, an invention is defined as something invented as a product of the imagination such as a device, contrivance, or process originated after study and experiment and an innovation is defined as the introduc..
120V, 60 Hz source is connected to a distribution line whose resistance, and inductive reactances are 0.1Ohm, j0.2 Ohm, respectively. Single phase, 2HP, 120V, 0.75 lagging pf. motor and 2.4Kw, 120V heater is connected in parallel.
Assume all the capacitors in the circuit below were discharged prior to assembly. The capacitors, resistors, and voltage sources are then arranged as shown in the circuit below. The circuit is then allowed to stabilize.
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