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A centrifugal pump has the performance characteristics of the pump with the 6-in.-diameter impeller described in Fig. 12.12. Note that the pump in this figure is operating at 3500 rpm. What is the expected head gained if the speed of this pump is reduced to 2800 rpm while operating at peak efficiency?
a polystyrene rod consisting of two cyldindrical portions ab and bc is restrained at both ends and supports two 6-kip
two steel e30000 ksi pipes 1 and 2 are connected at flange b. pipe 1 has an outside diameter of 6.625 in. and a wall
a system carries crude oil of specific gravity 0.8. the volumetric flow rate at point 1 the inlet is 10 ft3s. branch 1
a 1.5 hp motor is operarating in a room with air t of 20 c. the motor has an efficency of 78. the motor gives off heat
A water siphon having a constant inside diameter of 3 in. is arranged as shown in Fig. P5.105. If the friction loss between A and B is 0.8V2/2, where V is the velocity of flow in the siphon, determine the flowrate involved.
what are the reaction forces of a pendulum at the pivot point at angles 0 45 and 90 from the horizontal. the pendulum
If it is known that the density of the sand particles in the material of the previous problem is 2600 kg/m3, then what is the porosity n? And the void ratio e?
the international space station operates at an altitude of 350 km. plans for the final construction show that 4.22 106
Application: The dipole antenna. A dipole antenna is 1 m long and is fed with a current of amplitude 2 A. Find the radiated power of the antenna
A product from a shredder follows the Rosin-Rammler particle size distribution with n 1.0 and a characteristic size (x0) of 2 cm. What is the 90% passing size?
A 17-tooth 20 normal pressure-angle helical pinion with a right-hand helix angle of 30 rotates at 1800 rev/min when transmitting 4 hp to a 52-tooth helical gear. The normal diametrical pitch is 10 teeth/in, the face width is 1.5 in, and the set has a..
a rigid tank contains 9 l of saturated liquid refrigerant-134a and the same volume of saturated vapor refrigerant-134a
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