Engineering, 16.06.2021 04:20 megamorph
An undershot waterwheel consists of a series of flat vanes, mounted radially on a wheel of
large diameter, which are struck normally by a jet of water 0.3 m in diameter. If the velocity
of the water leaving the nozzle is 7.5 m/s and the velocity of the vanes is 4.8 m/s, determine:
i. The force exerted by the jet on the vanes;
ii. The work done per second;
iii. The hydraulic efficiency.
Answers: 3
Engineering, 04.07.2019 18:10
Adouble-strand no. 60 roller chain is used to transmit power between a 13-tooth driving sprocket rotating at 300 rev/min and a 52-tooth driven sprocket. a) what is the allowable horsepower of this drive? b) estimate the center-to-center distance if the chain length is 82 pitches. c) estimate the torque and bending force on the driving shaft by the chain if the actual horsepower transmitted is 30 percent less than the corrected (allowable) power.
Answers: 3
Engineering, 04.07.2019 18:10
Burgers vector is generally parallel to the dislocation line. a)-true b)-false
Answers: 2
Engineering, 04.07.2019 18:10
Manometers are good examples of measuring instruments, nowadays they are not as common as before. a)-capacitive probe gauges b)-gravitational gauges deformation ) gauges d)-digital gauges
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Engineering, 04.07.2019 18:20
Atank with constant volume contains 2.27 kg of a mixture of water phases (liquid-vapor). in the initial state the temperature and the quality are 127 °c and 0.6, respectively. the mixture is heated until the temperature of 160 oc is reached. illustrate the process in a t-v diagram. then, determine (1) the mass of the vapor in kg at the initial state, (2) the final pressure in kpa.
Answers: 3
An undershot waterwheel consists of a series of flat vanes, mounted radially on a wheel of
large di...
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