Question # 1. signal will become zero when the feedback signal and reference signs are equal. (a) Input (b) Actuating (c) Feedback (d) Reference Answer: (b) Actuating Question # 2. The distance between the starts of two consecutive coils measured in terms of coil sides is called (a) front pitch (b) winding pitch (c) commutator pitch (d) back pitch Answer: (b) winding pitch Question # 3. In a D.C. machine the number of brush arms is _____ the number of poles. (a) less than (b) greater than (c) equal to (d) none of the above Answer: (c) equal to Question # 4. The phase lag produced by transportation relays (a) increases linearly with frequency (b) is inverseh'proportional to frequency (c) is independent of frequency (d) decreases linearly with frequency Answer: (a) increases linearly with frequency Question # 5. _____ instruments are those which measure the total quantity of electricity delivered in a particular time. (a) Absolute (b) Indicating
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