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A three phase synchronous motor has the synchronous reactance of 2.1 Ohm and draws 250 A with a lagging power factor for an excitation voltage of 1327 -15 degree per phase. Find the terminal voltage of the motor and power factor of the motor. Choose the terminal voltage as the reference. (6%) Plot the phasor diagram. The armature resistance is negligible compared to the synchronous reactance. (4%)
Operation of NPN Bipolar Transistor : a. Describe the operation of a typical NPN bipolar junction transistor used both as an amplifier and a switch. b. List the 4 regions of operation and draw I-V characteristic curve.
Please explanation how a Parallel RLC Filter circuit behave at Low Frequencies, Resonant Frequency and High Frequencies
A three-phase transmission line having a reactance of 120 ohms per phase is connected to a wye-connected load whose resistance is 160 ohms per phase. If the supply volatge is 70kV line-to-line, calculate a) The line-to-neutral voltage per phase.
Discuss the trade-offs between fiber optic and satellite communication in terms of costs, signal capacity, signaling method, interference, likelihood of failure and repair issues, multipoint capability, reconfiguration capability, and noise.
he circuit is excited by a full-wave, ac/dc SCR converter. The ac voltage (input to the converter) is 120 V (rms), and the circuit resistance is 5 Ohm. At a trggering angle of 30 degrees, the load current is continous . Calculate the following
A sheet of plywood 1.39 cm thick is used to make a cabinet door 55.5 cm wide by 69.5 cm tall, with hinges mounted on the vertical edge. A small 181-g handle is mounted 45 cm from the lower hinge at the same height as that hinge.
Assume the initial state is steady (y = 0 at t = -0) a) Determine the transfer function of this process in the s domain. b) If the input is a ramp change in u(t) = 4t, determine the value of y(t) when t = 10s.
transfer function: T(s)=1/(0.1s+1) with all initail conditions at 0 a) if the input is 1.5sin(2t)*u(t) find the steady state value of the output b) after the input is applied, approximately how long will it take for the steady state value you found i..
What is the maximum symbol rate which can be sent over this link? If a binary line code is used, what is the maximum bit rate? What is the maximum bit rate with 4-ASK symbols?
A silicon p-n-p transistor has impurity concentrations of 5*10^18, 2*10^17, and 10^16 cm^-3, diffusion constants of minority carriers 52, 40, and 115 cm^2/s and minority lifetimes of 10^-8, 10^-7, and 10^-6 in the emitter
a meter stick of uniform mass distribution and a mass of 0.150-kg is arranged as follows; a fulcrum is placed under the stick at the 20-cm mark on the stick. A mass of 0.100-kg is suspended from the 90-cm mark.
Find the impulse response fpr the filter? How many nonzero terms does the impulse response contain?
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