Synchros – 1 – 1

1. The control …………………… synchro has three-phase winding both on its stator and rotor.

(a) differential
(b) transformer
(c) receiver
(d) transmitter

ANSWER

EXPLANATION

2. Regarding voltages induced in the three stator windings of a synchro, which statement is
false ?

(a) they depend on rotor position
(b) they are in phase
(c) they differ in magnitude
(d) they are poly-phase voltages

ANSWER

EXPLANATION

3. Which of the following synchros are used for error detection in a servo control system ?

(a) control transmitter
(b) control transformer
(c) control receiver
(d) both (a) and (b)

ANSWER

EXPLANATION

4. For torque transmission over a long distance with the help of electrical wires only, which of the following two synchros are used ?

(a) CX and CT
(b) CX and CR
(c) CX and CD
(d) CT and CD

ANSWER

EXPLANATION

5. The arrangement required for producing a rotation equal to the sum or difference of the rotation of two shafts consists of the following coupled synchros.

(a) control transmitter
(b) control receiver
(c) control differential transmitter
(d) all of the above

ANSWER

EXPLANATION

1

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