jak000067oyyfia
27.07.2019 •
Physics
An eight-pole, three-phase, 230 v, 60 hz, y-connected, wound-rotor induction motor has the following model impedances (in ohms per phase) referred to the stator circuit: r1-0.78 ω xi-0.56 ω a. calculate the maximum torque developed by this motor. b. calculate the slip at which the motor develops maximum torque c. calculate the starting torque of this motor. d. repeat a) through c) with the rotor resistance doubled. e. using excel or matlab, plot the torque-speed characteristics of this motor both with the original rotor resistance and with the rotor resistance doubled. (note: use the exact equations for vti and zth)
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Ответ:
X-rays are similar to gamma rays in that they are photons of pure energy. ... X-rays are emitted from processes outside the nucleus, but gamma rays originate inside the nucleus. They also are generally lower in energy and, therefore less penetrating than gamma rays.