Duct detectors are installed ____________.
A. As a substitute for area smoke detectors
B. Next to fresh air returns
C. In all residential locations
D. As a means of shutting down airflow when smoke is detected
D. As a means of shutting down airflow when smoke is detected
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Which of the following is NOT a sensor in an ATC system?
A) Passenger sensor B) Sun load sensor C) Ambient air temperature sensor D) In-car temperature sensor
The best soil for bulbs has a pH value of _____
A) below 6.0 B) above 7.0 C) 6.0 D) 7.0
PROBLEM 3.114 The solid circular drill rod AB is made of a steel that is assumed to be elastoplastic with and Knowing that a torque is applied to the rod and then removed, determine the maximum residual shearing stress in the rod.
What units are used to measure pressure in HVACR systems?
What will be an ideal response?