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one of the following is not essential in generating a dc voltage

UNIT 1 OPERATING PRINCIPLES OF D 8 ng ACHIEVEMENT REVIEW Select the correct answer for each of the following statements, and pl letter in the space provided. I. A generator ace the ce a. changes electrical energy to mechanical energy. b) changes mechanical energy to electrical energy c. is always self excited. d. is always separately excited. One of the following is not essential in generating a DC voltage: 2. a. a magnetic field b. a conductor C slip rings d. relative motion 3. Commutating poles are a. fastened to the center of the commutator. located midway between the main poles. c. secondary poles induced by cross-magnetizing the armature. d. used to regulate the voltage at the armature. The winding on an interpole is a. made of many turns of fine wire. b, wound in a direction opposite to that of the armature winding. c. connected in series with the armature load. d. connected across the generator terminals. 4. Generator terminals A, and A, are terminals that a. connect the armature only. b. connect the shunt field in series with the armature. c. connect the series field to the armature. d. have the armature in parallel with the commutating poles. 5. 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.
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