subject
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.)

ansver
Answers: 1

Another question on Engineering

question
Engineering, 04.07.2019 18:10
For the closed feedwater heater below, feedwater enters state 3 at a pressure of 2000 psia and temperature of 420 °f at a rate of ix10 ibhr. the feedwat extracted steam enters state 1 at a pressure of 1000 psia and enthalpy of 1500 btu/lbm. the extracted er leaves at an enthalpy of 528.7 btu/lbm steam leaves as a saturated liquid. (16) a) determine the mass flow rate of the extraction steam used to heat the feedwater (10) b) determine the terminal temperature difference of the closed feedwater heater
Answers: 3
question
Engineering, 04.07.2019 18:10
At 12 noon, the count in a bacteria culture was 400; at 4: 00 pm the count was 1200 let p(t) denote the bacteria cou population growth law. find: (a) an expression for the bacteria count at any time t (b) the bacteria count at 10 am. (c) the time required for the bacteria count to reach 1800.
Answers: 1
question
Engineering, 04.07.2019 19:10
Air inially occupying a volume of 1 m2 at 100 kpa, 27 c undergoes three internally reversible processes in series. process 1-2 compression to 500 kpa during which pv constant process 2-3 adiabatic expanslon to 100 kpa process 3-1: constant-pressure expansion to 100 kpa (a) calculate the change of entropy for each of the three processes. (b) calculate the heat and work involved in each process. (c) is this cycle a power cycle or refrigeration cycle?
Answers: 3
question
Engineering, 04.07.2019 19:10
Apressure vessel with an r/t 20 cannot be treated as thin walled vessel. a)-trune b)- false
Answers: 3
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
question
History, 10.09.2020 01:01
question
Mathematics, 10.09.2020 01:01
question
History, 10.09.2020 01:01
question
Mathematics, 10.09.2020 01:01
question
Mathematics, 10.09.2020 01:01
question
Mathematics, 10.09.2020 01:01
question
English, 10.09.2020 01:01
question
Mathematics, 10.09.2020 01:01
question
Mathematics, 10.09.2020 01:01
question
Mathematics, 10.09.2020 01:01
question
Mathematics, 10.09.2020 01:01
question
Mathematics, 10.09.2020 01:01
question
Mathematics, 10.09.2020 01:01
question
Social Studies, 10.09.2020 01:01
question
Mathematics, 10.09.2020 01:01
question
Mathematics, 10.09.2020 01:01
question
Health, 10.09.2020 01:01
question
Mathematics, 10.09.2020 01:01
question
Mathematics, 10.09.2020 01:01
question
Mathematics, 10.09.2020 01:01
Questions on the website: 13722361