Understanding Motor Controls
4th Edition
ISBN: 9781337798686
Author: Stephen L. Herman
Publisher: Delmar Cengage Learning
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Textbook Question
Chapter 34, Problem 9RQ
What is the primary advantage of an eddy current clutch over a
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Chapter 34 Solutions
Understanding Motor Controls
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- How is the speed of an eddy current clutch controlled?arrow_forward(c) List the key components in a clutch assembly and explain their role in making the clutch assembly function to transmit power from the engine to the input shaft of a gearbox.arrow_forwardExplain the importance of a cone clutch with an application.arrow_forward
- Explain the "Slip" and "Creep" phenomena that occur in a belt drive.arrow_forwardThese are Considerations in Designing a Friction Clutch. Can you explain these conditions?The following considerations must be kept in mind while designing a friction clutch.1. The suitable material forming the contact surfaces should be selected.2. The moving parts of the clutch should have low weight in order to minimise the inertia load,especially in high speed service.3. The clutch should not require any external force to maintain contact of the friction surfaces.4. The provision for taking up wear of the contact surfaces must be provided.5. The clutch should have provision for facilitating repairs.6. The clutch should have provision for carrying away the heat generated at the contactsurfaces.7. The projecting parts of the clutch should be covered by guardarrow_forwardBriefly explain how a Haldex clutch works.arrow_forward
- (a) State the main advantages of toothed clutches. (b) Uniform wear theory is used in designing a new friction clutch. Explain your ideas and concepts to support the statement. (c) (d) A brand new Street Performace Clutch are capable to delivered 135 Nm torque when the engine's flywheel is rotating at 1400 RPM. The other technical specifications are describe in Table (c). Over the years, the clutch torque performance had reduced to 100 Nm due to wear and tear of the ceramic plate while the others specification was remained unchanged. (i) Assuming the steel plate were made to wear resistance. Examine how much has the ceramic plate worn off on each contact surface individually. (ii) Calculate the transmission power lost in kW. Table (c) Descriptions Clutch plate inner diameter Clutch plate outer diameter Number of ceramic plates Number of metal plates installed Coefficient of friction, µ Coil spring stiffness Number of coil spring installed Specifications 100 mm 200 mm 3 0.3 12,000 N/m 4…arrow_forwardDescribe the purpose of a viscous clutch.arrow_forwardCompare three different types of clutches: single plate, conical friction and centrifugal, stating the advantages and limitations of each. Centrifugal clutches are used extensively in motor vehicles, select an appropriate clutch for this application and use the advantages / limitations already detailed, to justify your selectionarrow_forward
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