One form of feedback is for the computer to monitor ____ as a switch, relay, or other actuator is activated.
A. voltage
B. resistance
C. capacitors
D. gauges
Answer: A
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A ____ is placed to control the span of joists, rafters, or under a concentrated load, and is represented by parallel dashed lines.
A. plate B. joint C. spanner D. beam
Unlike other types of systems, geothermal systems do not lose capacity as the air temperature drops because:
A) They extract water from the ground, which is at a variable temperature. B) They extract heat from the ground, which is at a stable temperature. C) They extract air from the ground, which is at a variable temperature. D) They extract air from the ground, which is at a stable temperature.
In a two pipe system
A) Each convector is supplied with the same temperature hot water B) All the water flows through each convector in the loop C) The main supply water temperature drops a little through each convector D) The convector can be used for both heating and cooling
Technician Asays special tools are required to flare tubing, and the tools for SAE and ISO flares are different . Technician B says a typical flaring tool consists of a flaring bar and a flaring clamp. Who is correct?
A. A only B. B only C. Both A and B D. Neither A nor B