Electric Motor Control - 10th Edition - by Herman - ISBN 9781133702818
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Electric Motor Control
10th Edition
Publisher: CENGAGE L
ISBN: 9781133702818

Solutions for Electric Motor Control

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Chapter 11 - Float SwitchesChapter 12 - Flow SwitchesChapter 13 - Limit Switches And Proximity ControlChapter 14 - Phase Failure RelaysChapter 15 - Solenoid ValvesChapter 16 - Temperature SwitchesChapter 17 - Two-wire ControlsChapter 18 - Three-wire And Separate ControlsChapter 19 - Hand-off Automatic ControlsChapter 20 - Multiple Push-button StationsChapter 21 - Interlocking Methods For Reversing ControlChapter 22 - Sequence ControlChapter 23 - Jogging (inching) Control CircuitsChapter 24 - Time-delay, Low-voltage Release RelayChapter 25 - The Motor And Starting MethodsChapter 26 - Primary Resistor-type StartersChapter 27 - Autotransformer StartersChapter 28 - Part Winding Motor StartersChapter 29 - Automatic Starters For Star-delta MotorsChapter 30 - Ac Solid-state Reduced Voltage ControllerChapter 31 - Controllers For Two-speed, Two-winding (separate Winding) MotorsChapter 32 - Two-speed, One-winding (consequent Pole) Motor ControllersChapter 33 - Four-speed, Two-winding (consequent Pole) Motor ControllersChapter 34 - Wound Rotor Motors And Manual Speed ControlChapter 35 - Push-button Speed SelectionChapter 36 - Automatic Acceleration For Wound Rotor MotorsChapter 37 - Automatic Speed Control For Wound Rotor MotorsChapter 38 - Solid-state Adjustable Speed Controller For Ac Wound Rotor MotorsChapter 39 - Synchronous Motor OperationChapter 40 - Push-button SynchronizingChapter 41 - Timed Semiautomatic SynchronizingChapter 42 - Synchronous Automatic Motor StarterChapter 43 - About Dc MotorsChapter 44 - Use Of Reduced Voltage For StartingChapter 45 - Across-the-line StartingChapter 46 - Compensating And Definite Time Control StartingChapter 47 - Solid-state Adjustable Speed ControlChapter 48 - PluggingChapter 49 - Electric BrakesChapter 50 - Dynamic And Regenerative BrakingChapter 51 - Electric And Electronic BrakingChapter 52 - Direct Drives And Pulley DrivesChapter 53 - Gear MotorsChapter 54 - Variable-frequency Mechanical DrivesChapter 55 - Ac Adjustable Frequency DrivesChapter 56 - Magnetic Clutch And Magnetic DriveChapter 57 - Dc Variable-speed Control-motor DrivesChapter 58 - Programmable And Motion ControlChapter 59 - Motor Startup And Troubleshooting BasicsChapter 60 - Troubleshooting Techniques

Book Details

Updated with the latest technology, machines, and controls in the industry, ELECTRIC MOTOR CONTROL, 10E delivers comprehensive coverage and practical insight for anyone who will install, monitor, and/or maintain motor controls. Extremely reader friendly, the book begins by introducing the simplest of equipment and then helps you build on your knowledge as you learn step by step how to draw and interpret motor control schematic diagrams. Subsequent units offer detailed coverage of motor control components and how they are connected to form complete control circuits. The book ends with troubleshooting techniques that provide real-world practice.

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Describe how pressure switches are connected to start and stop (a) small motors and (b) large...Describe the sequence of operations required to (a) pump sumps and (b) fill tanks.What are typical uses of flow switches?Draw a simple circuit showing how a red pilot light is energized when a limit switch is operated by...What is the purpose of phase failure relays?Why is it important to understand the purpose and action of the total operational system when...What are some applications of temperature-actuated switches?What are some advantages of the use of two-wire control devices?Draw a control circuit with no-voltage protection. Describe how this method of wiring protects the...A selector switch and two-wire pilot device cannot be used to control a large motor directly but...Using the schematic diagram in Figure 2023, determine the number of control wires needed to control...How is a change in the direction of rotation of a three-phase motor accomplished?Describe what is meant by sequence control.What is the safety feature of a lock-stop push button?In the event of line voltage fluctuations or failure, how is the starter maintained in a closed...List five commonly used starting methods.What is the purpose of inserting resistance in the stator circuit during starting?Why is it desirable to remove the autotransformers from the line when the motor reaches its rated...How can a 230/460-volt motor be used as a part winding motor?Indicate the correct terminal markings for a star-delta motor on Figure 299. FIG. 299List some advantages of solid-state control.Excluding slip, at what speed (r/min) will an eight-pole, 60-hertz, 240-volt motor run?The rotating magnetic field of a two-pole motor travels 360 electrical degrees. How many mechanical...When a four-speed, two-winding motor is running, why is it desirable to allow the idle winding to...What characteristic of wound rotor motors led to their wide use for industrial applications?Can the motor in Figure 351 be started in medium or high speed? Why? Fig. 351 Push-button speed...Are the secondary resistors connected in three uniform wye or delta sections?A stator winding of a wound rotor motor contains six poles per phase. If it is connected to a 60 Hz...If someone told you that the solid-state power recovery controller is a perpetual motion machine,...Why is it necessary that the rotor and stator have an equal number of poles?What are the two basic functions of synchronous motor control?What assurance is there that the rotor will lock into step at the synchronous speed with the use of...What are the two basic methods of automatically starting a synchronous motor?Draw diagrams of the following DC motors, including the proper terminal markings and field...Why is a starter necessary on a DC motor?Why may small DC motors be started directly across the line?Why is this type of controller called a counter emf controller?Where does the DC motor get its DC power?In Figure 482, what is the purpose of normally closed contact F?Why are magnetic brakes used?After dynamic braking occurs, why is a mechanical brake generally necessary?Why does three-phase braking reduce motor heating as compared with single-phase braking?What are the disadvantages of low-speed, directly coupled induction motors?Why do many industrial machines use gear motors instead of low rpm induction motors?What is the formula for finding the speed of an AC squirrel cage induction motor?What is the operating principle of all three-phase motors?How is the magnetic clutch engaged and disengaged?What is meant by the base speed of a DC motor?Sketch the major components of a programmable controller.Who shall operate and maintain electrical machinery?What are the three main electrical test instruments used in troubleshooting?

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