Two technicians are discussing variable valve timing. Technician A says that changing the exhaust valve timing helps reduce exhaust emissions. Technician B says that changing the intake valve timing helps increase low-speed torque. Which technician is correct?

A) Technician A B) Technician B C) Both technicians D) Neither technician


C

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Skim milk contains less than _____ percent of milkfat

a. 0.5 c. 0.7 b. 0.6 d. 0.8

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?The unit of measure of electrical flow is ____________.

A. ?Volts B. ?Amps C. ?Watts

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We often turn the fan on in summer to help us cool. Explain how a fan makes us feel cooler in the summer. Also explain why some people use ceiling fans also in winter.

What will be an ideal response?

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Compared to reciprocating compressors, centrifugal compressors

A) Can move a larger volume of refrigerant B) Can operate at higher compression ratios C) Can work effectively on smaller systems D) Can operate against higher head pressures

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