Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN: 9780133923605
Author: Robert L. Boylestad
Publisher: PEARSON
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P1. A brushless DC motor whose converter's output is a________ , tend to run more smoothly.
a) sine wave b) trapezoidal wave c) either "a" or "b" d) neither "a" nor "b"
P2. Which of the following is the correct formula to determine the speed of a brushless DC motor efficiency of a DC motor?
a) speed = [(120 ÷ frequency)] number of poles b) speed = [(120)( number of poles)] frequency c) speed = [(120)(frequency)] ± number of poles d) none of the above
P3. Brushless DC motors that use magnetic gearing are often called_____
a) ring motors b) ring torquers c) both "a" and "b" d) neither "a" nor "b
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- I need the full and correct expert solution for handwritingarrow_forwardG1. The terminals of a DC motor are identified as the same as those of a DC generator. a) true b) false G2. What are the standard identification letters for the armature winding of a DC compound motor? a) A1 and A2 b) S1 and S2 C) F1 and F2 d) none of the above G3. What are the standard identification letters for the series field winding of a DC compound motor: a) A1 and A2 b) 1I and S2 c) F1 and F2 d) none of the abovearrow_forwardB3. A three-phase, 60 Hz 4-pole induction motor has a slip of 0.05 when the output is 30 kW. The frictional loss at shaft is 300 W. Calculate the following: (i) the rotor speed in r.p.m. (ii) the torque delivered by the rotor. (iii) the torque delivered to the rotor. (iv) the rotor IR loss.arrow_forward
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