Engineering, 23.09.2020 09:01 hieth
Consider an electric motor with a shaft power output of 28 kW and an efficiency of 88 percent. Determine the rate at which the motor dissipates heat to the room it is in when the motor operates at full load. In winter, this room is normally heated by a 2-kW resistance heater. Determine if it is necessary to turn the heater on when the motor runs at full load. (Round the final answer to one decimal place.)
Answers: 1
Another question on Engineering
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
Engineering, 04.07.2019 19:20
Aseries piping system conveys methyl alcohol. the system consists of 70 m of 1- nominal pipe follow by 50 m of 2-nominal pipe, both schedule 40 commercial steel. the 1-nominal pipe contains 3 90° elbows (regular) anda fully open gate valve, all threaded. the pressure drop through the system is 150 kpa. determine the volume flow rate through the system that is horizontally laid.
Answers: 1
Engineering, 04.07.2019 19:20
Amass-spring-viscous damper system of mass 3 kg has a frequency of 100 rad/s and is critically damped. its initial conditions are x(0)-3 mm and (0)-2.3 m/s. does the system overshoot its equilibrium position? prove your answer
Answers: 1
Engineering, 04.07.2019 19:20
A5 kg block of fe is dropped into a very large vat of water. the fe and water initial temperatures are 95 and 25 c, respectively. the fe final temperature is 25 c and the water can be treated as a thermal reservoir,. treated as a thermal reservoir take the water to be the system and determine the entropy generation. report vour answer in kj/k.
Answers: 1
You know the right answer?
Consider an electric motor with a shaft power output of 28 kW and an efficiency of 88 percent. Deter...
Questions
Mathematics, 23.10.2019 11:50
English, 23.10.2019 11:50
Physics, 23.10.2019 11:50
Geography, 23.10.2019 11:50
Mathematics, 23.10.2019 12:00
Mathematics, 23.10.2019 12:00
Mathematics, 23.10.2019 12:00
Chemistry, 23.10.2019 12:00
