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A 460-V, four-pole, 75-hp, 60-Hz, Y connected, three phase induction motor develops its full load induced torque at 1.2 percent slip when operating at 60 Hz and 460 V. The per phase circuit model impedances of the motor are,R1 = 0.058ohms Xm = 18ohmsX1 = 0.32 ohms X2 = 0.386 ohms
Mechanical, core and stray losses can be neglected in this problem.a. Find value for rotor resistance R2 (there will be two values for R2. Choose the larger one).b. Find Tmax, Smax and rotor at maximum torque for this motor.c. Find the starting torque of this motor.
Line A extends from (2,2, 0) to (-2, 2, 0) and Line B extends from (2, -2, 0) to (-2, -2, 0). Each has a linear charge density l = 1 nC / m. You want to calculate the magnitude and direction of the electric field due to the two line charges for al..
How does a squirrel cage induction machine differ from a wound rotor induction machine What are the advantages and disadvantages of each as a motor and as a generator
sketch the spectrum
An nMOSFET and pMOSFET are fabricated with substrate doping concentration of 6x1017/cm3. The gate oxide thickness is 5 nm. (a) Find Vt of the nMOSFET when n+ poly-Si is used to fabricate the gate electrode.
An underdamped sensor with a static sensitivity of K=1, undamped natural frequency of omega=1400 rad/s, and damping ratio of zeta=0.5 is used to measure a sinusoidal signal with a frequency of 6 kHz.
a) show the truth table b) show an algebraic expression in sum of minterms fom. c) show a minimum sum of products expression d) show the minterms of the complement of each function in numeric form.
A spread-spectrum acquisition system uses a serial search scheme.The synchroniser integrates the squarer output for interval of 0.1s and the synchroniser output is sampled at intervals of 0.05s . The probability of false alarm is 0.064255 .
A parallel plate capacitor has gasoline as the dielectric. The area of the plate is 0.25 m^2 and the distance between two plates is 5cm. a. Find the capacitance given that the relative permittivity of gasoline is 2.
(a) The ideal delay system. y[n] = x[n-nd] (b) The accumulator system. y[n] = sum (xk) , k from -inf to n (c) Forward difference system. y[n] = x[n + 1]- x[n] (d) Backward difference system. y[n] = x[n]- x[n - 1]
Determine the relationship between the steady-state error to a ramp input and the gain K and system parameter b. For what values of K and b can we guarantee that the magnitude of the steady-state error to a ramp input
Research the recent history of gasoline pricing in your area, and attempt to relate any fluctuations you observe to documented supply and demand factors outlined in our book. Be sure to cite any references used.
a) Using a table of the Gaussian distribution, determine an exact value for P[|X-n|>=2.5sigma] b) What is the upper bound on P[|X-n|>=2.5signma] given by the Chebyshev inequality
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