subject
Engineering, 01.10.2019 03:00 summer5716

Consider an electric motor with a shaft power output of 20 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. (page 96).

ansver
Answers: 2

Another question on Engineering

question
Engineering, 04.07.2019 18:10
Aplate clutch has a single pair of mating friction surfaces 250-mm od by 175-mm id. the mean value of the coefficient of friction is 0.30, and the actuating force is 4 kn. a) find the maximum pressure and the torque capacity using the uniform-wear model. b) find the maximum pressure and the torque capacity using the uniform-pressure model.
Answers: 3
question
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
question
Engineering, 04.07.2019 18:10
The drive force for diffusion is 7 fick's first law can be used to solve the non-steady state diffusion. a)-true b)-false
Answers: 1
question
Engineering, 04.07.2019 18:10
Consider a large isothermal enclosure that is maintained at a uniform temperature of 2000 k. calculate the emissive power of the radiation that emerges from a small aperture on the enclosure surface. what is the wavelength ? , below which 10% of the emission is concentrated? what is the wavelength ? 2 above which 10% of the emission is concentrated? determine the wavelength at which maximum spectral emissive power occurs. what is the irradiation incident on a small object placed inside the enclosure?
Answers: 2
You know the right answer?
Consider an electric motor with a shaft power output of 20 kw and an efficiency of 88 percent. deter...
Questions
question
Mathematics, 23.02.2021 14:00
question
Mathematics, 23.02.2021 14:00
question
English, 23.02.2021 14:00
question
Mathematics, 23.02.2021 14:00
question
Mathematics, 23.02.2021 14:00
Questions on the website: 13722359