6. To raise generator voltage, the a. field current should be increased. b. field current should be decreased. c. speed should be decreased. d. brushes should be shifted forward. 7. Generator voltage output control is usually accomplished by a. varying the speed. b. a rheostat in the field. c. increasing the flux. d. decreasing the flux. 8. In Figure 1-6, the normal voltage regulation for a shunt generator is at a. curve (a). b. a broken line. c. curve (c). d. curve (d). OUTPUT VOLTAGE 0 Volts Ο 0 Amperes LOAD CURRENT FIGURE 1-6 Voltage regulation graphs. Full load Cengage Learning 2014

6. To raise generator voltage, the a. field current should be increased. b. field current should be decreased. c. speed should be decreased. d. brushes should be shifted forward. 7. Generator voltage output control is usually accomplished by a. varying the speed. b. a rheostat in the field. c. increasing the flux. d. decreasing the flux. 8. In Figure 1-6, the normal voltage regulation for a shunt generator is at a. curve (a). b. a broken line. c. curve (c). d. curve (d). OUTPUT VOLTAGE 0 Volts Ο 0 Amperes LOAD CURRENT FIGURE 1-6 Voltage regulation graphs. Full load Cengage Learning 2014

Electric Motor Control

10th Edition

ISBN:9781133702818

Author:Herman

Publisher:Herman

Chapter57: Dc Variable-speed Control-motor Drives

Section: Chapter Questions

Problem 8SQ

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