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What factors generally govern
(a) the electrical time constant and
(b) the mechanical time constant of a motor?
Compare the typical values for these parameters and discuss how they affect the motor response.
Consider atmospheric air at 25 degrees Celsius and a velocity at 25 m/s flowing over both sides of a 1 eter long flat plate that is maintained at 125 degrees Celsius. Determine the rate of heat transfer per unit width from the plate for values of th..
liquid ammonia is stored in a tank at 24 deg c and a pressure of 2.4 x 106 pa absolute. a leak develops at the bottom
calculate the percent energy distribution in a steam generator that goes into steam losses to flue gases refuse and
In your table, include terms such as power capability, speed controllability, speed regulation, linearity, operating bandwidth, starting torque, power supply requirements, commutation requirements, and power dissipation. Discuss a practical method..
Draw and label the free body diagram for the beam. Calculate the support reaction forces at A and B. Draw the shear force and bending moment diagrams.
Determine the (a) thermal efficiency and (b) the mass flow rate of the cooling water, in kg per kg of steam flowing.
Determine the stress to cause yielding using Von Mises criteria for the system sx=20MPa,sy=10MPa, and txy=3MPa. Use the following two different approaches.Use the Von Mises criteria directly. syield (in MPa):
the duct between the turbine and the exit nozzle of a motor is 0.6 m diameter. the gas has a stagnant pressure and
1. a solid cube of copper with each side 1.0 ft is converted into metallic powders of spherical shape by water
liquid water at 50degc and 1 mpa is mixed with superheated steam at 200degc and 1 mpa in an open feedwater heater
The car C increases its speed at the constant rate of 1.5 m/s2 as it rounds the curve shown. If the magnitude of the total acceleration of the car is 2.5 m/s2 at point A, where radius of curvature is 200 m, compute speed of the car at this point
the flywheel of a small punching machine rotates at 360 rpm. each punching operation requires 1500 ft-lb of work and it
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