Which of the following types of compressors are used in truck A/C systems?
A. swashplate
B. crank-actuated piston
C. rotary vane
D. all of the above
Answer: D
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Liquid water, with a density of 1000 kg/m3, flows at a velocity of 8.5 m/s through a circular pipe with a diameter of 42.0 mm. Determine the volumetric flow rate and the mass flow rate of the water.
Given: p = 1000 kg/m3, V = 8.5 m/s, D = 42.0 mm = 0.042 m What will be an ideal response?
What component of internal combustion engines converts the piston’s up-and-down or forward-and-backward motion into rotational motion?
a. Head b. Crankshaft c. Connecting rod d. Engine block
If it is necessary to oversize a motor to provide a wide speed range, it should not be increased by more than_____.
a. 1hp b. 7hp c. 10hp d. 35hp
Why must some valves be left open between the storage tank and the compressor, and the compressor and the cooler?
A) To push vapor from the cooler to the storage tank B) To allow the liquid in the storage tank to flash C) To empty the condenser D) To draw suction through the storage tank