Understanding Motor Controls
4th Edition
ISBN: 9781337798686
Author: Stephen L. Herman
Publisher: Delmar Cengage Learning
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Textbook Question
Chapter 43, Problem 9RQ
A machine delivered for installation has a 2-inch pulley on the motor and a 6-inch pulley on the load. The motor nameplate reads 180 rpm. At what speed in rpm will the driven machine rotate?
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Chapter 43 Solutions
Understanding Motor Controls
Ch. 43 - What are the disadvantages of low-speed, directly...Ch. 43 - Prob. 2RQCh. 43 - What three alignment checks should be made to...Ch. 43 - Prob. 4RQCh. 43 - Induction motors should not be used below a...Ch. 43 - What is the primary reason for using a pulley...Ch. 43 - How tightly should V-belts be adjusted?Ch. 43 - Refer to Figure 436 and assume the motor is to...Ch. 43 - A machine delivered for installation has a 2-inch...
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- Q- The reduction of speed from 360 rpm to 120 rpm is desired by the use of a chain drive. The driving sprocket has 18 teeth. What is the number of teeth on the driven sprocket?arrow_forwardA belt-driven blower assembly is equipped with a motor that turns a 5-in. drive pulley at a speed of 3450 rpm. The blower is turning at a speed of 1725 rpm. Determine the size of the driven pulley.arrow_forward3. A motor has pinion gear with 14 teeth and is meshed with a gear with 52 teeth. The gear is attached to a shaft that drives an 85mm diameter wheel. If the motor spins at 1750rpm's, what is the speed of the vehicle in m/s?arrow_forward
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- Given the following values: torque at the drive wheels = 15 hp, rpm of the engine = 3000 rpm, and rpm of the drive wheel = 5 rpm. What is the Torque at the engine? a. None of the choices b. 0.025 hp c. 1000 hp d. 9000 hparrow_forwardA motor develops 225 ft-lb of torque at 860 RPM. What is the horsepower output of the motor?arrow_forwardWhat is torque produced by the crank of the engine if the tangential force is 10 N and crank radius is 0.2 marrow_forward
- Q. No 1. Derive the expressions for A, B, & C in the given figure with the help of clear drawing and stepwise procedure. Also find the expression for the Length of the belt drives for open and closed belt drives. B=?. sin D+d 2C A=? sin D+d 2C VAC - (D+ dỷarrow_forwardProduct of radii of belt drivens to product of radii of belt drives is speed ratio Select one: True Falsearrow_forwardWhat is the length of a belt that is used for a 4” pulley and a 10” pulley that have a center to center distance of 20”?arrow_forward
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