Electric Motor Control
10th Edition
ISBN: 9781133702818
Author: Herman
Publisher: CENGAGE L
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Chapter 52, Problem 5SQ
To determine
State the minimum induction motor’s usable speed limit.
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Chapter 52 Solutions
Electric Motor Control
Ch. 52 - What are the disadvantages of low-speed, directly...Ch. 52 - What type of AC motor can be directly coupled at...Ch. 52 - What three alignment checks should be made to...Ch. 52 - What special tools, not ordinarily carried by an...Ch. 52 - Prob. 5SQCh. 52 - Prob. 6SQCh. 52 - How tightly should V-belts be adjusted?Ch. 52 - Prob. 8SQCh. 52 - A machine delivered for installation has a 2-inch...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, electrical-engineering and related others by exploring similar questions and additional content below.Similar questions
- In Figure 327, the motor cannot be started in high speed. Why?arrow_forwardis the DC motor in figure 1 turning in the same direction as that in figure 3 ? a- yes b- noarrow_forwardA switched reluctance motor has salient poles on ..................... a. neither stator or rotor b. Stator and rotor c. Rotor only d. Stator onlyarrow_forward
- Two induction motors are cascaded for the purpose of speed control. The main motor has 6 poles and the other motor has 4 poles. Calculate the possible speed that can be obtained if the set is run on a supply of 50 Hz frequency. (Ans: 3000 rpm, 1500 rpm, 1000 rpm & 600 rpm)arrow_forwardBy looking at which part of the motor, it can be easily confirmed that a particular motor is a DC motor? (A) Frame (B) Shaft (C) Commutator (D) Stator (E) None of the above.arrow_forwardAt what speed will a 12-pole, 50-cycle induction motor operate if the slip is 0.1?arrow_forward
- A 60-Hz induction motor is needed to drive a load at approximately 850 rpm. How many poles should the motor have? What is the slip of this motor for a speed of 850 rpm?arrow_forwardA large DC motor is started without starter. True or Falsearrow_forwardWhy would the slip not change? If you start the motor at 80% of the rated frequency, wouldn't that be 48 Hz?arrow_forward
- What type of electric motor is used from small to very large loads? A. Permanent Magnet Motor B. Universal Motor C. Squirrel Cage Induction Motor D. Wound Rotor Induction Motorarrow_forwardHow can i Estimate the maximum torque of the motor three phasearrow_forwardWhat are the effects of slip in the slip-ring induction motor? A. No effects B. Changes the change in speed C. Changes the rotor frequency D. B and Carrow_forward
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