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Figure 1A.—Two-phase alternator.
IN ANSWERING QUESTION 1-49, REFER
TO FIGURE 1A.
1-49. What is the phase relationship between
voltages A and B?
1. In phase
2. 45º out of phase
3. 90º out of phase
4. 180º out of phase
1-50. A two-phase, three-wire alternator has
what maximum number of output
voltages available?
1. One
2. Two
3. Three
4. Four
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INTENTIONALLY.
Figure 1B.—Connections for two-phase, three-wire
alternator output.
IN ANSWERING QUESTION 1-51, REFER
TO FIGURE 1B.
1-51. What is the relative amplitude of the
voltage at output C as compared to A and
B?
1. C is .707 times A or B
2. C is equal to the difference between
and B
3. C is 1.414 times A or B
4. C is twice the sum of A and B
1-52. What determines the phase relationship
between the individual output voltages in
a multiphase alternator?
1. The speed of rotation
2. The number of field poles
3. The method of connecting the
terminals
4. The placement of the armature coils
1-53. What is the phase relationship between
the output voltages of a three-phase
alternator?
1. In phase
2. 60º out of phase
3. 90º out of phase
4. 120º out of phase
