What controls the heating elements in most electric furnaces?
A) Contactors B) Heat relays C) Sequencers D) Thermistors
C
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Air is cooled from 1100 R to 500 R. Considering the variability of the specific heats, determine the change in specific internal energy and the change in specific enthalpy for the process.
Given: T1 = 1100 R; T2 = 500 R What will be an ideal response?
To increase furnace efficiency, the startup of the furnace blower is delayed using a _____.
a. thermocouple b. limit control c. time-delay relay d. short-cycle time
According to the author, what must be changed in the conventional process to construct a sustainable building?
A) The financial expense B) The Process itself C) Cooling and Heating operations D) None of the Above
An air bag system is being serviced. Tech A says to disconnect the yellow SRS connectors at the front of the vehicle. Tech B says to disconnect and isolate the negative battery cable. Who is right?
a. Technician A b. Technician B c. Both Technicians A and B d. Neither Technician A nor B