ME 360 Midterm: ME 360 Alabama Test3 Spring01
Document Summary
Short answer questions - use the space provided for written answers. 11/13/07: [8] define these terms that apply to position and velocity sensors (use words and/or a sketch as needed), lvdt, absolute encoder, optical encoder, lvt, [6] the setup below is used to measure angular velocity of a shaft. The gear tooth had 8 lobes that are sensed by the magnetic pickup. In a 0. 65 second period, a total of 375 pulses are counted. 0 1 2 3 4 5 6 7 8 9 372 373 374 375. C, if the resistance is r=1234 . s t l o v t t u p u. 0. 98: [20pt] a test of a dc permanent magnet motor operated at an armature voltage of va=48 volts generated the torque-speed data points plotted below. Determine: the motor"s "no-load" speed, n-l, in rpm and rad/sec, the motor"s theoretical back-emf constant, kb, the motor"s theoretical torque constant, ka, and, the motor"s theoretical resistance, ra. m.
