How many 1" pipes can be supplied with a 4" pipe?

Fill in the blank(s) with the appropriate word(s).


16

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Following is a list of approximate conversion factors, useful for “back-of-the-envelope” estimates. None of them is exact, but most are accurate to within about ±10%.

? 1(atm) ? 1 bar
? 1(Btu) ?1 kJ
? 1(hp) ? 0.75 kW
? 1(inch) ? 2.5 cm
? 1(lbm) ? 0.5 kg
? 1(mile) ? 1.6 km
? 1(quart) ? 1 liter
? 1(yard) ? 1 m

Conversion Factors

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?A _____ displacement pump has a fixed output per revolution.

What will be an ideal response?

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Some water-source heat pumps contain a separate coaxial coil for heating domestic hot water. The heat for the domestic hot water comes from:

A) Subcooling the liquid leaving the condenser. B) De-superheating the hot gas leaving the compressor. C) A submersion-style electric heater. D) Using the water heating coil instead of the loop in cooling.

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Motor starting components can be made up of:

A) Starting and running capacitors only. B) Internal and external centrifugal switches only. C) Internal centrifugal switches, relays, starting, and running capacitors. D) Toggle switches, external centrifugal switches, and relays.

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