What component rotates in the compressor housing of a turbocharger?

A. impeller
B. turbine
C. turbine shaft
D. shaft bearings


Answer: A

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Valve spring inserts (shims) are designed to ________.

A. Increase installed height of the valve B. Adjust the correct valve spring installed height C. Decrease valve spring pressure to compensate for decreased installed height D. Decrease installed height of the valve

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The economizer is able to increase or decrease the amount of outside air that is brought into the structure with two ____.

A. blowers B. dampers C. valves D. diverters

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Turbochargers are being discussed. Technician A says that the engine supplies oil to the turbocharger for lubrication. Technician B says that all turbochargers have coolant lines from the engine attached to prevent overheating. Who is correct?

A. A only B. B only C. Both A and B D. Neither A nor B

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The keep alive signal is required when no signal is present in order to keep the end pieces of equipment ________

Fill in the blank(s) with correct word

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