The most important advantage of the multiple-opening damper is that it permits a choice of flue locations.
Answer the following statement true (T) or false (F)
True
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To determine if the contacts inside a sequencer are faulty, the technician should energize the relay and use an ohmmeter set to the RX1 scale. Which of these resistance readings indicates that the sequencer must be replaced?
A) Greater than 0.1 B) Between 0 and 0.1 C) 0 D) Less than 0.1
If a 1 M? resistor, 0.47 M? resistor and 0.5 M? resistor are connected in parallel across an 18 V source, what is the total current if the 1 M? resistor opens?
A) 92.3 mA B) 74.3 ?A C) 92.3 ?A D) 74.3 mA
Carbon monoxide is formed:
A) When the combustion air is at a high relative humidity. B) Anytime gas is burned. C) When the flames are burning at a temperature exceeding the manufacturer's recommended maximum combustion temperature. D) When the gas is not burning completely.
Regardless of the type of motor or application, the motor bearings require yearly lubrication.
Answer the following statement true (T) or false (F)