Determine the maximum tensile stress maximum compressive stress, and maximum shear stress in the shaft.

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Kinematics 1 Answer Anonymous(s) Post

Consider a permanent-magnet dc motor with the following parameters.

Consider a permanent-magnet dc motor with the following parameters: Ra=0.35Ω, La=1.5 mH, Ke=0.5 V/(rads/s), Kt= 0.5 Nm/A, and Jm= 0.02 Kg.M^2. The rated torque of this motor is 4Nm.

Part A) Plot the steady-state torque-speed characteristics for Va=100V, 60V, and 30V.

Part B) If the motor is supplied by a switch-mode dc-dc converter which has a dc-bus voltage of 200V. The switching frequency fs= 25 kHz. Calculate and plot the waveforms for Va(t), Ea, Ia(t), and Id(t) under the following conditions:

Part 1) Motoring in the forward direction at a speed of 1,500 rpm, supplying a load of 3Nm

Part 2) Regenerative braking from conditions in part 1, with a current of 10A.

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Electrical Machines 1 Answer Anonymous(s) Post

Design a memory module.

Design a memory module that should have a capacity of 64Mx32 bits using 4Mx4bits ICs and required logic gates/systems.

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Basic Computer Organizations and Design 1 Answer Ayat Islam