Engineering, 05.12.2019 00:31 babygirl226
Water is pumped from a lake to a storage tank 18 m above at a rate of 70 l/s while consuming 20.4 kw of electric power. disregarding any frictional losses in the pipes and any changes in kinetic energy, determine (a) the overall efficiency of 232 bernoulli and energy equations the pumpāmotor unit and (b) the pressure difference between the inlet and the exit of the pump.
Answers: 1
Engineering, 03.07.2019 14:10
Amass of m 1.5 kg of steam is contained in a closed rigid container. initially the pressure and temperature of the steam are: p 1.5 mpa and t 240Ā°c (superheated state), respectively. then the temperature drops to t2= 100Ā°c as the result of heat transfer to the surroundings. determine: a) quality of the steam at the end of the process, b) heat transfer with the surroundings. for: p1.5 mpa and t 240Ā°c: enthalpy of superheated vapour is 2900 kj/kg, specific volume of superheated vapour is 0. 1483 m/kg, while for t 100Ā°c: enthalpy of saturated liquid water is 419kj/kg, specific volume of saturated liquid water is 0.001043m/kg, enthalpy of saturated vapour is 2676 kj/kg, specific volume of saturated vapour is 1.672 m/kg and pressure is 0.1 mpa.
Answers: 3
Engineering, 04.07.2019 18:10
During a steady flow process, the change of energy with respect to time is zero. a)- true b)- false
Answers: 2
Engineering, 04.07.2019 18:10
Give heat transfer applications for the following, (i) gas turbines (propulsion) ) gas turbines (power generation). (iii) steam turbines. (iv) combined heat and power (chp). (v) automotive engines
Answers: 1
Engineering, 04.07.2019 19:20
The power source in a certain welding setup generates 3500w that is transferred to the low carbon steel work with a heat transfer factor of 0.85. the melting factor in the operation is 0.45. a continuous fillet weld is to be made with a cross-sectional area of 23 mm2 determine the travel speed at which the welding can be accomplished.
Answers: 3
Water is pumped from a lake to a storage tank 18 m above at a rate of 70 l/s while consuming 20.4 kw...
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