If pin 5 is connected to ground through a variable resistor, the on time is shorter, and the off time is not affected.
Answer the following statement true (T) or false (F)
True
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Explain why the live load on the slab-on-ground in a concrete tilt-up wall building is generally higher during the construction of the building than in-service live load.
What will be an ideal response?What will be an ideal response?
Footing drains are usually perforated ____ pipe placed around the footings in a bed of crushed stone.
A. concrete B. plastic C. aluminum D. steel
Photodiodes
A) Work only when forward-biased B) Are similar to photoresistors C) Both A & B D) Neither A or B
What is the possible consequence of cutting through a bonded roof to install a vent pipe?
A) The HVAC/R contractor could ultimately be liable for any water damage resulting from leaks. B) The vent will not vent correctly when passing through a bonded roof. C) An electrical short will be created between the vent pipe and the bond on the roof. D) Cutting through bonded roofing is safe because the roof is insured.