12
2-29. In a two-speed servo system such as that
described in the text, which of the
following components controls the
movement of the load at 2º but does
NOT control the movement of the load at
10º?
1. Fine CT
2. Coarse CT
3. Synchronizer
4. Servoamplifier
2-30. In which of the following situations
should a magnetic amplifier be used
instead of a conventional amplifier?
1. When a small load is to be driven at
high speeds
2. If great accuracy is required in
positioning the load
3. If a dual-speed servo system is
required
4. When a heavy load is to be moved
2-31. Most servo systems used in the Navy are
of which of the following types?
1. Open-loop
2. Multi-loop
3. Single-loop
4. Summing-loop
2-32. Which of the following objects has
gyroscopic properties?
1. A spinning top
2. A wheel on a moving bicycle
3. The moving blade assembly of an
electric fan
4. Each of the above
Figure 2A.—Gyro model, universally mounted.
IN ANSWERING QUESTION 2-33, REFER
TO FIGURE 2A.
2-33. Which of the following axes, if any, is
the gyro spin axis?
1. X-X
2. Y-Y
3. Z-Z
4. None of the above
2-34. The ability of a gyro to maintain a fixed
position in space is referred to by what
term?
1. Precession
2. Rigidity
3. Apparent rotation
4. Gimbal-stability
2-35. A gyro will resist all forces that attempt
to change its
1. location
2. spin axis direction
3. speed of rotation
4. center of gravity
