Electric Motor Control
10th Edition
ISBN: 9781133702818
Author: Herman
Publisher: CENGAGE L
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Chapter 53, Problem 3SQ
To determine
Write the maximum speed rpm of gear motors.
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Chapter 53 Solutions
Electric Motor Control
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- How can the holding torque of a stepping motor be increased?arrow_forwardWhat is the principal reason for using star-delta motors?arrow_forwardWhy is the starting torque per A of starting current of a wound-rotor motor higher than that of a squirrel-cage motor although the starting current is less?arrow_forward
- 1-D.C. shunt motor maintains a more constant speed under varying load. (True or False) 2-Dc shunt motor is best suited where low starting torque is required. (True or False) 3-The speed of d.c series motor is increased if the armature current is increased. (True or False)arrow_forwardWhat is the ratio of the outer cage torque to the inner cage torque of the indcution motor?arrow_forwardA 25 hp,250V long shunt compound motor takes 5 A when running light and runs at 1150 rpm. Armature resistance, 0.15 ohm, Shunt field resistance, 200 ohm and series field resistance, 0.05 ohm. At rated load the motor takes 86.5A and runs at 720 rpm. Determine the ratio of torque developed from no-load to full load.arrow_forward
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