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Water is to be pumped from a dam to a storage tank 20 m above at a rate of 70 L/s. The electric power needed to achieve this is 20.4 kW. Neglecting the frictional losses in the pipes and the change in the K.E, determine a) overall efficiency of the pump-motor unit and b) the pressure difference between the inlet and the exit of the pump. Draw the process diagram.
a bug is on the rimof a disk of diameter 13 in that moves from rest to an angular speed of 70 revmin in 5.2 s.what is
a 600 mw coal-fired power plant has an overall thermal efficiency of 38. it is burning coal that has a heating value of
If the deflection of the gae fluid height, h, is 2 inches find the 1) velocity of the jet air and 2) the force exerted on the disk by the air.
If the room temperature is 15C and the temperature of the air exiting the hair dryer is 50C, what is the percent increase in the air velocity as it passes through the dryer.
a tensile member of aluminum alloy 2024 - 0 had an original cross - sectional area of 4. 0 square inches. if the strain
The linear joint (Type L) of a certain industrial robot is actuated by a piston mechanism. The length of the joint wehn fully retracted is 600 mm and when fully extended is 1000 mm. If the robot's controller has an eight-bit storage capacity, dete..
Determine the power generated by the motor M at this instant if it operates with an efficiency of epsilon = 0.8.
an advertising sign is suspended from a horizontal rod and is allowed to swing under wind forces. the rod is to be
a nuclear power plant has an electrical power output of 1800 mw and operates with an efficiency of 30. if excess
air at 100 lbf in 2 500 degree f and a velocity of 100 ft s enters a nozzle operating at steady state and expands
Rod AB is bent into shape of a circular arc adn is lodged between two pegs D adn E. It supports a load P at end B. Neglecting friction and the weight of the rod, determine the distance c corresponding to equilibrium when a = 1 in and R = 5 in.
how does the statistical mechanical definition of entropy allow a reinterpretation of the second and third law of
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