Electric Motor Control
10th Edition
ISBN: 9781305177611
Author: Herman
Publisher: Cengage
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Textbook Question
Chapter 11, Problem 6SQ
In Figure 11–10, assume that both motors are running. What would be the action of the circuit if the overload contact connected in series with coil 1M should open?
- a. Both motors will continue to run.
- b. Both motors will stop running.
- c. Pump motor 1 will continue to operate and pump motor 2 will stop running.
- d. Pump motor 1 will stop running and pump motor 2 will continue to operate.
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Given the following voltage divider, R1 is fixed and R2 is implemented using two terminals of a 10k pot so that R2 is a variable over the range of 0<=R2<= 10 kiloolhm. V1 is a voltage source from a 9 V battery. What is the largest value of R1 that will allow the output voltage to vary over a range that includes at least 1.5V<= V2 <= 5.0V. Then, determine a resistor (or a combination of resistors) of standard type you might that will get as close as possible to but not larger than the calculated value of R1.
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Given the following voltage divider circuit, where V1 is a 9V battery, R1 is implemented using two terminals of a 10k pot so that R1 is a variable over the range 0 <= R1 <= 10kiloohlm. What is the largest value of the resistor R1 that will permit the output voltage to vary over the range that includes at least 1.5V <= V2 <= 5.0 V? Then, find a resitor (or a combinations of resistors) that are common types that would get as close as possible but not larger than the calculated value for R2.
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