____________________ is the most used semiconductor
Fill in the blank(s) with the appropriate word(s).
ANS: Silicon
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Answer the following statement(s) true (T) or false (F)
1. Series field windings are marked F1 and F2 in the terminal connection box. 2. Shunt field windings exhibit a much higher resistance than the series field windings. 3. Frogleg wound armatures are most often used in small machines. 4. Compound motors contain both a series and shunt field. 5. Compound motors generally employ a field loss relay (FLR) that is intended to disconnect the motor from the power line in the event that shunt field current should be interrupted or drop below an acceptable level.
Design a problem, using Fig. 2.92, to help other students better understand series and parallel circuits.
 FIGURE 1.png)
Technician A says the output of the air pump is directed to the area between the reduction and the oxidation catalyst. Technician B says the output of the air pump is directed to the exhaust manifolds just behind the exhaust valves. Who is correct?
A. A only B. B only C. both A and B D. neither A nor B
When troubleshooting an induced-draft gas furnace, what should be checked if the induced-draft fan comes on but the igniter is never energized?
A) Check the draft pressure switch to see if it is closed. B) Check the microamp signal of the flame sensor. C) Check the incoming gas pressure. D) Check the control transformer.