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ENGG252 (DB225) Engineering Fluid Mechanics

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The pressure of water

is increased from 130 kPa to 605 kPa by a pump. The temperature of water also

increases by 0.15

°

C. The density of water is 1 kg/L and its specific

heat is

cp = 4.18 kJ/kg×°

C. The enthalpy change of the water during this

process is

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The specific gravity

of a fluid is 0.139. The specific weight of this fluid is

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The speed of an

aircraft is given to be 360 m/s in air. If the speed of sound at that location

is 330 m/s, the flight of aircraft is

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The weight of a 100-kg

mass at sea level is

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If mass, heat, and

work are not allowed to cross the boundaries of a system, the system is called

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The speed of an

aircraft is given to be 965 km/h. If the speed of sound at that location is

316 m/s, the Mach number is

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A hydroelectric power

plant operates at its rated power of 5 MW. If the plant has produced 43.8 million

kWh of electricity in a specified year, the number of hours the plant has operated

that year is

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