Answer the following statement(s) true (T) or false (F)
1. When a cad cell is exposed to a bright light, its resistance drops to a low value.
2. The cad cell produces a voltage in the presence of light.
3. When a cad cell is in darkness, its resistance decreases and current is permitted to flow to the base of the transistor.
4. A device is required that can convert the analog operation of the cad cell into a digital action.
5. When a cad cell is in the presence of light, its resistance is high.
1. True
2. False
3. False
4. True
5. False
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____________________ leaks can result in carbon monoxide poisoning of passengers riding in a vehicle.
Fill in the blank(s) with the appropriate word(s).
Technical schools often have shorter completion times than a community college.
Answer the following statement true (T) or false (F)
To help prevent damaging the first winding, some circuits contain a timer that disconnects power to the motor if the second winding is not energized within a predetermined time. This timer is often called a(n) ____________________ timer.
Fill in the blank(s) with the appropriate word(s).
Manual calculations for sizing sprinkler piping are done under which of the following circumstances? Select all that apply.
A) When accuracy must be assured. B) Small systems. C) Preliminary design.