A given circuit using an RC integrator to turn on after 20 seconds now takes now takes much longer to turn on. What is the most probable cause?
A) The capacitor has decreased in value. B) The capacitor has increased in value.
C) The resistor has opened. D) The resistor has decreased in value.
B
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Answer the following statements true (T) or false (F)
1) Class A fires involve flammable liquids and gases. 2) Class D fires involve combustible metals. 3) Fire walls are defined by their ability to slow the spread of fire. 4) Lower flammable limit refers to the percentage of vapor in the air above which a fire cannot occur because of insufficient fuel. 5) Upper flammable limit refers to the percentage of vapor in the air above which there is insufficient air for a fire.
What type of sensor is used by the adaptive cruise control system to maintain set vehicle-to-vehicle distance?
What will be an ideal response?
List the safety precautions that should be observed when starting a gas furnace
What will be an ideal response?
PTAC unit performance is certified by
A) Air-Conditioning, Heating and Refrigeration Institute, AHRI B) American Society of Testing and Materials Engineers, ASTME C) Environmental Protection Agency, EPA D) Underwriters Laboratory, UL