What is a unit of measured resistance called?
A. voltage
B. ohm
C. EMF
D. current
Answer: B
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Answer the following statement(s) true (T) or false (F)
1. A distinguishing feature of the synchronous motor is that it runs without slip at a speed determined by the frequency of the connected power source and the number of poles it contains. 2. The rotor is excited by a source of direct current so that it produces simultaneous north and south poles. 3. Synchronous motors are constructed almost exactly like alternators. 4. AC loads generally have a lagging power factor. 5. A disadvantage of the synchronous motor equipped with a brushless exciter is that brush sparking is eliminated.
Interiorscapers create a ____ by positioning pebbles and rocks in a curvilinear pattern through a large
interiorscape, suggesting the presence of water.
a. wash c. dry creek b. stream d. levee
A two-phase system is produced by having an alternator with two sets of coils wound ____ degrees apart.
a. 60 b. 90 c. 120 d. 150
A thermistor is a temperature-sensitive ____.
a. resistor b. capacitor c. thermostat d. overload