Since a typical GTAW procedure uses no flux, it is usually not necessary to _____
a. perform postweld cleaning
b. use a filler metal
c. wear welding gloves
d. ventilate the work area
a
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A technician measures a circuit resistance with an ohmmeter and finds 1 ohm of resistance. He then connects a 12V battery to the circuit and measures a current of 1A. Per Ohm's law, he expected 12A of current to flow. What is a likely reason for the discrepancy?
A. Ohm's law is only a theory. B. Positive temperature coefficient of the load C. Lenz law D. The circuit was shorted to ground when the resistance measurement was obtained.
Which of the following is the amount of heat content, measured in BTUs per pound, in a substance usually compared to air at 0?F or water at 32?F?
a. convection b. enthalpy c. condensation d. humidity
Technician A says that the Mariner/Escape HEVs can be propelled by the electric motor only. Technician B says that the Mariner/Escape HEVs can be propelled by the internal combustion engine only. Which technician is correct?
A) Technician A only B) Technician B only C) Both technicians D) Neither technician
A vapor that changes into a solid while bypassing the liquid state is known as:
A) Deposition. B) Critical pressure. C) Critical mass. D) Critical temperature.