Taking temperature readings ranks among the most commonly performed tasks in our industry. A number of different types of thermometers are available. List three common thermometer types.
What will be an ideal response?
stem thermometer, thermistor thermometer, infrared thermometer
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The architect’s 16 scale is the scale.
a. full b. half c. quarter d. double
A constant-pressure vessel initially contains 7.5 kg saturated steam at P = 0.2 MPa. Heat is removed until the vessel contents have a quality of q = 0.8. The heat removed is transferred to a heat reservoir at a constant T = 373.15 K. Determine the change in entropy of the heat reservoir.
A. 8.40 kJ/K B. 8.85 kJ/K C. 8.31 kJ/K D. -8.31 kJ/K E. Insufficient information to solve
A split-wire receptacle receiving power from a single source (one breaker or one fuse) is ____.
A. a multiwire receptacle B. not a multiwire receptacle C. a continuous circuit D. a branched circuit
The newest HVACR control systems operate by
A) processing electronic signals with a microprocessor B) turning relay coils on or off to complete circuits C) providing a modulating air pressure in response to monitored conditions D) providing a varying DC voltage in response to monitored conditions