The suction pressure on a split AC system that is running with an excessive evaporator heat load:
A) Will most likely pull into a vacuum. B) Will be higher than normal.
C) Will be lower than normal. D) Is not affected by the load.
B
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Answer the following statement(s) true (T) or false (F)
1. Line diagrams include all of the devices in the system and show the physical relationships between the devices. 2. The control circuit consists of the main contacts and the overload heaters to the motor. 3. Three-wire control prevents the restarting of machinery when power is restored. 4. Motors draw half as much current on high voltages as they do on low voltages. 5. Throttle valves and narrow pipes can waste huge amounts of power.
Cuando se utiliza revestimiento sólido, se debe dejar una separación de _____ entre los paneles para permitir su expansión.
a. 1 ?8" (0.31 cm) b. 1 ?2" (1.27 cm) c. 3 ?4" (1.905 cm) d. 11 ?4" (3.175 cm)
Over the elastic range, the deformation of a spring is directly proportional to
a. the amount of stretch. b. the amount of compression. c. the applied force. d. the spring constant.
External buses are also known as ________,
A) peripheral buses B) field buses C) universal buses D) expansion buses