EBK ELECTRIC MOTOR CONTROL
10th Edition
ISBN: 9780100784598
Author: Herman
Publisher: YUZU
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Chapter 50, Problem 3SQ
Referring to Figure 50–1, what will happen if the controller is placed in the off position from a maximum lower position?
FIG. 50–1 Reconnecting a crane controller for different operations.
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A 400V,50Hz,Y-connected, 4-pole,three-phase wound rotor induction motor, the rotor circuit is Y-
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consider the circuit below. Assume it uses ideal diodes with the details specified above. the left side of the circuit is basically a wheatstone bridge, hooked to the right side, which is a differential op amp. a) what is the voltage between junctions "A" and "B" if R2 is 201 ohms? b) what are the minimum and maximum values of R2 can be without the op amp hitting saturation?remember that for the diodes to be ideal you they have to have a turn on voltage of 0.6 volts.
The capacitors in the circuit shown below have no energy stored in them and then switch “S1” closes at time t=0. Assume the ideal op amp does not saturate. As stated above assume the diodes are ideal with parameters specified above.
Diodes are at 0.6 Volts
Show the derivations of the mathematical equations for v(t) at Locations A and B for t≥ 0
Chapter 50 Solutions
EBK ELECTRIC MOTOR CONTROL
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