The type of O-ring that needs additional mechanical loading when used in dynamic seals is the _____ O-ring.

a. Teflon®
b. silicone
c. polyurethane
d. Buna-N


a. Teflon®

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A muffler is a component installed in the exhaust system to reduce or eliminate the engine's post combustion noise.

Answer the following statement true (T) or false (F)

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In which of the following modes would you expect to find hot, high-pressure refrigerant flowing through

the outdoor coil? a. Cooling only b. Cooling and defrost c. Heating only d. Heating and defrost

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Assuming negligible rise and fall times, what is the duty cycle of a rectangular waveform that is in a high state for 12 ms and in its low state for 60 ms?

A) 20% B) 82% C) 5% D) 16.7%

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Why are exponential functions important in describing population growth?

What will be an ideal response?

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