Understanding Motor Controls
4th Edition
ISBN: 9781337798686
Author: Stephen L. Herman
Publisher: Delmar Cengage Learning
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Textbook Question
Chapter 52, Problem 5RQ
What electronic component is frequently used to phase shift the triac?
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- Briefly explain why a triac must be phase shifted.arrow_forwardWhich family of devices does the triac belong to?arrow_forwardWhile inspecting the synchronizers of a transaxle: Technician A says that if the clutch teeth of the syn chronizer are rounded, the synchronizer assembly must be replaced. Technician B says that the move ment of the synchronizer sleeve on the shaft should be checked. Who is correct? a. Technician A only b. Technician B only c. Both A and B d. Neither A nor Barrow_forward
- Briefly describe the operation of the three electronic sections of a variable frequency drive (VFD) using Figure 17.60 for assistance.arrow_forwardTechnician A says that some systems use a special modulated shift control solenoid. Technician B says that some systems use a special modulated converter clutch control solenoid. Who is correct? Technician A says that shift solenoids direct fluid flow to and away from the apply devices in the transmission. Technician B says that shift solenoids are used to mechanically apply a friction brake or multiple-disc clutch assembly. Who is correct? Technician A says that throttle position is an important input in most electronic shift control systems. Technician B says that vehicle speed is an important input for most electronic shift control systems. Who is correct? Technician A says that a faulty TP sensor can cause delayed shifts. Technician B says that delayed shifts can be caused by an open shift solenoid. Who is correct? Technician A says that some shift solenoids can be activated by providing a ground for the solenoid. Technician B says that some shift solenoids can be activated by…arrow_forwardIn a Toyota Prius, what members of the planetary gearset are connected to the motor/generators and the engine?arrow_forward
- True or False? In a high-speed CAN system, a serial data bus is used to allow communication between the various control modules in a vehicle.arrow_forwardWhile discussing the CVT transaxie used in Toyota hybrid vehicles: Technician A says that the transaxie contains two electric motor/generators, a differential, and a simple planetary gearset. Technician B says that the planetary gearset adjusts the diameter of the pulleys to provide the various speed ratios. Who is correct? a. Technician A only b. Technician B only c. Both A and B d. Neither A nor Barrow_forwardAn electronically controlled transmission has erratic shifting: Technician A says that a poor PCM ground will cause this problem. Technician B says that a bad AC generator-to-battery circuit will cause erratic performance of a transmission or transaxle. Who is correct?arrow_forward
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Material Science, Phase Diagrams, Part 1; Author: Welt der Werkstoffe;https://www.youtube.com/watch?v=G83ZaoB3XCc;License: Standard Youtube License