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

(c) Recording
(d) Integrating
Answer: (d) Integrating

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