Electric Motor Control
10th Edition
ISBN: 9781133702818
Author: Herman
Publisher: CENGAGE L
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Chapter 1, Problem 8SQ
To determine
Choose the correct option that represents the conditions, which affect the starting and stopping of a motor and its machinery.
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22)
What type of conversion is happening in a DC Motor.
a.
DC electrical energy to mechanical energy
b.
AC electrical energy to mechanical energy
c.
Mechanical to AC Electrical Energy
d.
Mechanical to DC Electrical Energy
A motor will undergo three major conditions throughout its operation. State and
explain what takes place for each of these conditions.
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- 14.a. Jogging a motor is accomplished byA. manually turning its shaft.B. reducing its armature current.C. momentarily energizing the starter.D. blocking the motor from rotating.14.b. How does change in resistance affect the speed of a DC motor?A. Increasing the armature resistance decreases the motor's speed.B. Reducing the field resistance increases the motor's speed.C. Increasing the field resistance decreases the motor's speed.D. Reducing the armature resistance decreases the motor's speed.arrow_forwardFill the blanks.arrow_forward"Electrical Machines/ I need clear and detailed answers to all the questions, preferably in a clear and concise manner."arrow_forward
- Pls help me answer the following questions . I promise I will up vote you.arrow_forwardi need the answer quicklyarrow_forward15. What are the following statements are true for DC Motor? I. Motor converts Electrical Energy to Mechanical Energy II. Motor supply current to the armature winding III. Back EMF is lesser than the Supply voltage IV. Fleming's Right-hand rule a. I and II b. II and IV c. I,II and III d. I,II and IVarrow_forward
- 25. Which of the following is/are a general method of starting squirrel-cage motors'? a) full voltage starting b) reduced voltage starting c) both "a" and "b" d) neither "a" nor "b"arrow_forward3) A In which of the following application DC series motor is used: A. Centrifugal Pump B. Motor Operation in DC and AC C. Water pump drive D. Starter for car E. All abovearrow_forwardExplain the characteristics and how the following motor starters work. 1.Slip Ring a. Variable Resistance b. Fixed Starting Resistancearrow_forward
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