The power door lock system does not operate. Technician A says faulty unlock relay contacts could be the cause. Technician B says a faulty motor could cause this. Who is correct?
A. Technician A only
B. Technician B only
C. Both Technician A and B
D. Neither Technician A nor B
Answer: A
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In an open delta with a center-tapped transformer, label the two ends of the center-tapped transformer as L2 and L3 and label the high leg as L1. The current flow in the neutral (center tap) is equal to _____.
A. AN = A1- (A2 + A3) B. AN = A1 + (A2- A3) C. AN = A1- (A2- A3) D. AN = A1 + (A2 + A3)
Which is the correct equation for Ohm's law?
A. Voltage/Resistance = Current B. Current ´ Resistance = Voltage C. Voltage/Current = Resistance D. All of the above are valid expressions of Ohm's law.
La construcción de la estructura interior de sistema integral se utiliza muy poco en la actualidad debido a ____.
a. que no es acorde a los códigos de construcción más actuales b. los costos de las maderas y de la mano de obra c. que la contracción de las piezas de la estructura de madera es alta d. que experimenta una cantidad relativamente grande de decantación
How do you record temperature rise in a heat pump?
A) Align the thermometer with the heat strips and note the temperature. B) Compare rate of airflow against external static pressure. C) Operate the blower and read the external temperature. D) Measure air temperature, amperage, and voltage.