Technician A says that horn frequency can range from 1,800 to 3,550 Hz. Technician B says that most horn circuits use a relay and the current through the relay coil is controlled by the horn button. Who is right?
A) Technician A only B) Technician B only C) Both A and B D) Neither A nor B
C
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When a substance becomes electrified due to the application of pressure, what is the electrical principle known as?
A. induction B. capacitance C. piezoelectricity D. thermoelectricity
List three positive and three negative impacts of construction on people, society, or the environment.
What will be an ideal response?
How have newer versions of the check valve been modified?
A) They are now part of metering devices. B) They are now insulated. C) The metering devices are now inside the check valves. D) One check valve can now connect to two metering devices.
A crankcase pressure regulating valve can help prevent _____
a. refrigerant overcharge b. rapid suction pressure fluctuations c. compressor crankcase pressurization d. compressor motor overload