Which of the following statements is true when comparing the series and shunt field windings of a DC motor?
A. The shunt winding must handle more current than the series winding.
B. The shunt winding handles an equal amount of current as the series winding.
C. The series winding handles more current than the shunt winding.
D. The series winding handles less current than the shunt winding.
Answer: C
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While having a discussion, Technician A says that electronically controlled steering gears can be "steer-by-wire" with no mechanical connection. Technician B says that they can be mechanically connected using an electrohydraulic steering gear. Who is correct?
A. A only B. B only C. Both A and B D. Neither A nor B
Based on the latest industry standards; must the oil be changed in a hermetic compressor on a close-coupled reach-in unit when retrofitting R12 with R401A?
a. Yes, you must always change from mineral oil to alkylbenzene on a retrofit. b. No, because it has been found that the oil will actually return to the compressor. c. It depends on what refrigerant you are using to retrofit the unit.
Answer the following statement(s) true (T) or false (F)
1. In the three-phase system, electrical energy originates from an alternator that has three main windings placed 180° apart. 2. A three-phase generator is smaller in physical dimensions than a single-phase generator. 3. The A and B phase voltages in a two-phase connection are designed to be equal. 4. The two-wattmeter method can be used in an unbalanced three-phase, four-wire system. 5. The power factor is the ratio of apparent power to true power.
If the complementary angle is 45 degrees, what is the fitting angle?
Fill in the blank(s) with the appropriate word(s).