ASSIGNMENT 14
Textbook Assignment: “Data Conversion Devices and Switchboards,” chapter 13, 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.
14-6.
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
At any instant, 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.
14-10.
98
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°
What is the total number of stator voltages
required to determine the ratio angle once the
sector has been determined?
1. One
2. Two
3. Three
4. Four
