A fixed-orifice tube ____________
A) Has a temperature sensing capability
B) Has a pressure sensing capability
C) Is usually located in the evaporator inlet or line to the evaporator
D) Has an internal valve
C) Is usually located in the evaporator inlet or line to the evaporator
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Botflies lay their eggs on the hairs of horses
Indicate whether the statement is true or false.
During lactation, an acid detergent fiber (ADF) level of _____ to _____ percent is recommended
a. 15, 17 c. 18, 21 b. 17, 19 d. 21, 23
The automatic control system for the temperature of a bath of liquid consists of a reference voltage fed into a differential amplifier. This is connected to a relay, which then switches on or off the electrical power to a heater in the liquid. Negative feedback is provided by a measurement system, which feeds a voltage into the differential amplifier. Sketch a block diagram of the system and explain how the error signal is produced.
What will be an ideal response?
Examples of load devices include:
A) Motors, resistance heaters, and solenoid valves. B) motors, thermostats, overloads, heaters, and switches. C) Overloads, door switches, limit switches. D) Thermostats, pressure switches, and overloads.