ASSIGNMENT 14
Textbook Assignment: “Data Conversion Devices and Switchboards,” chapter 13—continued, pages 13-5
through 13-41.
IN ANSWERING QUESTIONS 14-1 THROUGH
14-4, SELECT FROM THE FOLLOWING LIST
THE SYNCHRO SYSTEM DESCRIBED BY THE
QUESTION. ANSWERS MAY BE USED MORE
THAN ONCE.
14-1.
14-2.
14-3.
14-4.
14-5.
1. Single-speed synchro
2. Multispeed synchro
3. Dual-speed synchro
Allows for a coarse value and a fine value to
be sent at the same time.
Uses more than one speed of data
transmission.
Uses a single synchro transmitter to transmit
the entire range of data.
Is the least accurate synchro system.
In a dual-speed synchro system, which of the
following values is/are sent by the synchro
with (a) the highest ratio and (b) the lowest
ratio?
1. (a) Coarse only
(b) Fine only
2. (a) Fine only
(b) Coarse only
3. (a) Coarse only
(b) Fine and coarse
4. (a) Fine and coarse
(b) Fine and coarse
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14-6. At any instant in time, the amplitude and
polarity of the stator voltages, when
compared to the supply or reference voltage,
indicate the angular position of the rotor.
1. True
2. False
14-7. The sector conversion method divides the
360° of rotation into what total number of
sectors?
1. 6
2. 8
3.
45
4.
60
IN ANSWERING QUESTIONS 14-8 AND 14-9,
REFER TO TABLE 13-2 ON PAGE 13-7 OF THE
TEXT.
14-8.
14-9.
When the stator voltages S1 and S3 are in
phase with the reference and S2 is out of
phase, what sector is selected?
1. 30° to 90°
2. 90° to 150°
3. 150° to 210°
4. 330° to 30°
When the stator voltages S1 and S2 are in
phase with the reference and S3 is out of
phase, what sector is selected?
1. 30° to 90°
2. 90° to 150°
3. 150° to 210°
4. 270° to 330°
