Related questions with answers
A de shunt motor rated at has a field winding resistance of and an armature resistance of . The motor is supplied at the rated voltage. Under the no-load condition, the motor draws a line current of . When driving a load, the motor runs at and draws a current of . Use the load data for the calculation of the motor constant. (a) Draw the equivalent circuit of the motor and determine the motor constant. (b) Calculate the no-load speed. (c) Plot the motor speed versus the load current and determine the load current when the speed is below the no-load speed.
Derive an expression for the current in a system like that in given figure, under the following conditions. The resistance between the rails is , the rails and the moving rod are identical in cross section and have the same resistivity . The distance between the rails is , and the rod moves at constant speed perpendicular to the uniform field . At time zero, the moving rod is next to the resistance .
In this problem, we must determine the current in the motor of Example 29-10, if the load causes it to run at half speed.
Recommended textbook solutions
More related questions