You would like to control the position (shaft angle) of a DC motor with a knob connected to a potentiometer. The open loop system is given as follows: DC Motor (Volts to motor position)
Knob Position Motor Position
1Potentiometer (Knob position to volts)Vmotor
(1) Plot the poles of this open loop transfer function on the s-plane.
(2) Use MATLAB/SIMULINK to plot the motor position response to a step input (i. e. turning the knob to a particular position).
Is it possible to use the knob to specify a particular motor position

Line joining liquid phase with liquid and solid phase mixture is known as: a) liquidus b) solidus c) tie line d) none of the mentioned

If the thermal strain developed in polyimide film during deposition is given as 0.0044. assume room temperature is kept at 17.3 c, and thermal coefficient of expansion for the film and the substrate are 54 x 10^-6c^-1 and 3.3 x 10^-6c^-1respectively. calculate the deposition temperature.

Air is to be cooled in the evaporator section of a refrigerator by passing it over a bank of 0.8-cm-outer-diameter and 0.4-m-long tubes inside which the refrigerant is evaporating at -20°c. air approaches the tube bank in the normal direction at 0°c and 1 atm with a mean velocity of 4 m/s. the tubes are arranged in-line with longitudinal and transverse pitches of sl- st 1.5 cm. there are 30 rows in the flow direction with 15 tubes in each row. determine (a) the refrigeration capacity of this system and (b) pressure drop across the tube bank. evaluate the air properties at an assumed mean temperature of -5°c and 1 atm. is this a good assumption?