List the three factors that limit the amount of inrush current in the primary transformer.
What will be an ideal response?
1. The amount of applied voltage.
2. The resistance of the wire in the primary winding.
3. The flux change of the magnetic field in the core. The amount of flux change determines the amount of inductive reactance produced in the primary winding when power is applied.
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A ____ humidifier uses electric heaters to convert water to steam and then injects it into the airflow in the duct.
A. pan B. bypass C. self-contained steam D. wetted drum
To prepared a 1000 P.P.M solution of E.P.A. registered Quaternary ammonium compound, using a 15% active ingredient you would mix:
What will be an ideal response?
The typical start up sequence for a hot surface ignition system is:
A) Combustion blower prepurge, igniter energized after a delay, gas valve energized after a delay, flames sensed, indoor blower energized after time delay. B) Combustion blower, indoor blower, igniter, and gas valve all energized simultaneously. C) Gas valve and igniter energized, flames sensed, combustion blower and indoor blower energized after time delay. D) Combustion blower energized, igniter energized and gas valve energized, flames sensed, indoor blower energized after time delay.
Refer to the diagram above and solve using the values provided.
R1 = 50 ?, R2 = 200 ?, and R3 = 600 ?, and 600 V is applied between A and B. What is the current flow through R3?
What will be an ideal response?