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A 300 kW, 6600 V, 8-pole, 50 Hz, three-phase, Y-connected, non-salient pole (i.e., cylindrical rotor) synchronous motor has the following parameters:Xs = 72 ohm /phase at 50 Hz, R =10 ohm/phase for operation near base speed, and Efo = 3200 V/phase at base speed.(i) What is the base speed of the motor in mechanical rad/sec and rev/min?(ii) Calculate the load angle ( of the motor when it delivers rated load at base speed.(iii) Calculate the motor input current (I) and power factor (PF) of the drive for this condition of operation.(iv) Calculate the maximum power and torque the motor is capable of developing while running at base speed.
A drug test for college athletes will result in three possible test results: Positive, Negative or Inconclusive. For a drug user the probability of these outcomes is 0.65, 0.06 and 0.29 respectively.
A wire is bent in the form of a half loop of radius a=10mm and charged with a line charge density pL=10^-9 C/m. Calculate the field intensity at the center of the loop.
A proportional control system is to be used to control the wing flap of a jet airplane. The wind load is expected to cause as much as 600 in-lb of torque. The system should be able to keep the flaps with 5o of the set point.
A 250ft^2 shell and tube heat exchanger was purchased fo $13,500 in 1994 when the index value was 830. Estimate the cost of a 150 ft^2 shell and tube heat exchanger in 2010 when the index calue is 1,029 and the appropriate factor is 0.6.
A causal LTI system has the difference equation y[n]+0.25y[n-1]-0.125y[n-2] = x[n]+x[n-1]. What is the impulse response of this system and what is it's output y[n] for input signal x[n] = (-1)^n u[n].
Determine the expression for the frequency response H(O) of a causal IIR LTI discrete-time system characterized by the input-output relation y[n]=x[n]-ay[n-R], |a|
Design a 4-bit binary incrementer using HALF-ADDERS as building blocks. The circuits implements A+1=S where A and S are 4-bit binary numbrers. The circuit has 4 inputs A3A2A1A0 and 5 outputs : S3S2S1S0 and overflow C4. Draw the circuit diagram wit..
Assume a block size of 256 bytes, a clock rate of 1GHz, an L1 miss rate of 2%, and that main memory takes 100ns of overload and then delivers 16 bytes per clock cycle. What is the AMAT
The time taken to download software from the internet is uniformly distributed between four and ten minutes. A. What is the probability that the downloading time for software is more than six minutes B. Prob that time is between five and eight minute..
n the conduction band of a semiconductor, it has a lower valley at the center of the Bril- louin zone, and six upper valleys at the zone boundary along [100]. If the effective mass for the lower valley is 0.1m0 and that for the upper valleys
A "ferrite" having a relative permeability of 50 H / m, that operates with flux densities sufficiently small, may be considered a single material. If the magnetic flux density in the material is B = 0.05 T, H and M. halle How to compare the values
Design a circuit using JK flip-flops that takes in a binary stream B0B1B2B3 and outputs 1 at a time t if the stream recieved thusfar (i.e. BoB1..Bt-1Bt), when read as an unsigned binary number, is divisible by 3.
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