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Author Question: Consider a rigid body that is rotating. Which of the following is an accurate statement? A) Its ... (Read 19 times)

nevelica

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on: Jul 27, 2018
Consider a rigid body that is rotating. Which of the following is an accurate statement?
 
  A) Its center of rotation must be at rest, i.e., not moving.
  B) Its center of rotation must be moving with a constant velocity.
  C) All points on the body are moving with the same angular velocity.
  D) Its center of rotation is its center of gravity.
  E) All points on the body are moving with the same linear velocity.

Question 2

The windings of a DC motor have a resistance of 6.0 . The motor operates on 120. V AC, and when running at full speed it generates a back emf of 105. V.
 
  (a) What is the starting current of the motor?
  (b) What current does the motor draw when operating at full speed?


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braelync

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Reply #1 on: Jul 27, 2018
Answer to Question 1

C

Answer to Question 2

(a) 20 A
(b) 2.5 A


nevelica

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Reply 2 on: Jul 27, 2018
Excellent

isabelt_18

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Reply 3 on: Yesterday
Great answer, keep it coming :)

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