A+ MCQ's Answers

Feb 3rd, 2012
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A. T. Still University
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This file contains answers to the following questions some of which are given here i.e. 1. Which of the following DC motors provides the highest starting torque? A. Series-wound C. Compound-wound B. Shunt-wound D. Generator-wound 2. What is the efficiency of a DC generator that requires 100 watts of energy to supply 80 watts of output power? A. 8% C. 80% B. 12.5% D. 125% 3. Which of the following DC motors acts as a form of electrical ratchet? A. Servo C. Stepper B. Permanent-magnet D. Syncro 4. Why is steel alloyed with silicon used as the core material for the armature of a DC generator? A. To reduce eddy-current flow in the armature core B. To increase the hysteresis loss in the core C. To decrease the resistance of the armature conductors D. To reduce the resistance

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