Which of the following substances is considered a good semiconductor?
a. Copper
b. Porcelain
c. Silicon
d. Silver
c. Silicon
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Technician A says the tie rods in a rack and pinion steering system should be parallel to the lower control arms. Technician B says a rack and pinion steering linkage has more friction points than a parallelogram steering linkage. Who is correct?
A. A only B. B only C. Both A and B D. Neither A nor B
Answer the following statement(s) true (T) or false (F)
1. If the direction of armature rotation is reversed at start-up, the brush polarity is also reversed. 2. There is only one method that can be used to renew the residual magnetism. 3. The motorizing test can be used for restoring residual flux if the generator armature is mechanically engaged to the prime mover and cannot rotate freely. 4. Any generator has critical field resistance. 5. The terms voltage regulation and voltage control have the same meaning.
What is the normal pressure range for high pressure gauges made for use on R-410A systems?
A) 0 - 30" Hg vacuum and 0 - 350 psig pressure B) 0 - 500 psig pressure C) 0 - 800 psig pressure D) 0 - 30" Hg vacuum and 0 - 120 psig pressure
The three classes of equipment failures are nonthreatening, important, and _____
a. debilitating b. temporary c. unexpected d. critical