Throttling valves are used for capacity control on a _____.

a. rotary-vane compressor
b. stationary-vane compressor
c. centrifugal compressor
d. screw compressor


c. centrifugal compressor

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Explain how to clean and point a tungsten electrode.

What will be an ideal response?

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Which compressor type draws refrigerant gas in through the inlet port into voids created by turning rotors?

A) A scroll compressor B) A reciprocating compressor C) A rotary compressor D) A screw compressor

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What is a boundary condition? How many boundary conditions do we need to specify for a two-dimensional heat conduction problem?

What will be an ideal response?

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To turn off an IGBT, a __________ voltage is applied to the gate.

A. negative B. positive C. either A or B

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