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Dynamic brakes can hold a motor once it has stopped (True or False?)

hwmadeeasy Uncategorized March 13, 2019 0 Minutes

Dynamic brakes can hold a motor once it has stopped (True or False?)

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Published March 13, 2019

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Previous Post A plane circular loop of conducting wire of radius r = 10 ems, which possesses N=15 turns is placed in a uniform magnetic field. The direction of the magnetic field makes an angle of 30 degree with respect to the normal direction to the loop. The magnetic field-strength B is increased at a constant rate from 1 Tesla to 5 Tesla in a time interval of delta t 10 s. What is the EMF generated around the loop? If the electrical resistance of the loop is R = 15 omega, what current flows around the loop as the magnetic field is increased?

Next Post 4.3.(25 pt.) Consider a periodic signala) Determine the fundamental frequency Ohm0 of x(t). b) Find the Fourier series coefficients Xk and carefully plot their magnitude and phase spectra. According to the magnitude line spectrum, at what frequency is the power of x(t) the largest? c) When x(t) is passed through a filter with transfer function H(s), the output of the filter is y(t)=2-2sin(2Pit) Determine the values of H(Ohm) at Ohm = 0, 2Pi. and 4Pi radians/sec.

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