ASE-Style Multiple Choice
____ are used by paint suppliers and technicians to weigh the various ingredients when mixing paint materials.
A. Pressure gauges
B. Mixing scales
C. Dial thermometers
D. Flow meters
Answer: B
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On a propane system, a pilot burner with a narrow, sharp flame has which of the following problems?
a. clogged pilot filter b. too much draft c. undersized orifice d. excessive gas pressure
Circuit protection testing is being discussed. Technician A says fuses can be tested while they are still in the fuse box by touching a test light connected to ground to the back of the fuse. Technician B says that fusible elements can be tested by removing the fuse and checking for continuity or resistance across the terminals. Who is correct?
A. A only B. B only C. both A and B D. neither A nor B
In the U.S., only 3 cases of _____ had been found through 2009.
Fill in the blank(s) with the appropriate word(s).
Answer the following statement(s) true (T) or false (F)
1. Motors that used a centrifugal switch to disconnect the start windings cannot be used with variable voltage control.
2. Double-face clutches have both the armature and field discs mounted on the same hub.
3. The accompanying diagram has a double-face magnetic clutch.
4. Clutches cannot provide a smooth start for loads that can be damaged by sudden starting, or for high inertia loads such as centrifuges or flywheels
5. The problem with eddy current clutch circuits is that they lack a speed sensing device that automatically increases or decreases the DC excitation current when load is added or removed