The primary purpose of using a magnetic starter to control three phase motors is:
A) Control the operation of the three phase starting capacitor.
B) Insure the motor RPM does not exceed the starter limit.
C) To disconnect all three legs of power in the event of an overload.
D) To initiate the magnetic flux variations for three phase motor operation.
C
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Shakes and ____ create a jagged surface at the ridge and the edge.
A. shingles B. Masonite C. tile D. metal
How does a two-step scroll compressor achieve capacity reduction?
A) An internal rotating plate opens and closes two drilled ports in the scroll. B) Only one scroll is used during low-capacity operation, while both are used for full-capacity operation. C) The orbiting scroll only completes half-orbits in low-capacity operation. D) The orbiting scroll turns clockwise for reduced capacity and counterclockwise for full capacity.
Dual master cylinders are being discussed. Technician A says this system is so named because of the two master cylinders. Technician B says dual master cylinders use two separate bores. Who is correct?
A. A only B. B only C. Both A and B D. Neither A nor B
Before testing a run or start capacitor with an ohmmeter, the capacitor should be discharged with a 20,000-ohm 5-watt resistor.
Answer the following statement true (T) or false (F)