Engineering, 21.11.2019 01:31 kristygodwin
12–75 the emissivity of a tungsten filament can be approximated to be 0.5 for radiation at wavelengths less than 1 mm and 0.15 for radiation at greater than 1 mm. determine the average emissivity of the filament at (a) 2000 k and (b) 3000 k. also, determine the absorptivity and reflectivity of the filament at both temperatures.
Answers: 1
Another question on Engineering
Engineering, 04.07.2019 18:10
What difference(s) did you notice using a pneumatic circuit over hydraulic circuit.explain why the pneumatic piston stumbles when it hits an obstacle.
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 18:20
Select any two (2) areas of applications of chain-drive. (clo4) a)-permanent lubrication necessary b)-hydraulic forklift truck operation c)-rigging and heavy moving materials d)-relatively high maintenance costs e)-costlier than belt drives
Answers: 2
Engineering, 04.07.2019 18:20
Modern high speed trains do not have perpendicular expansion gaps where rails are joined end-to-end any more they are mostly welded together but what might happen if there was a spell of particularly hot weather that causes inspection of the tracks?
Answers: 1
You know the right answer?
12–75 the emissivity of a tungsten filament can be approximated to be 0.5 for radiation at wavelengt...
Questions
Mathematics, 09.01.2021 01:00
Mathematics, 09.01.2021 01:00
Mathematics, 09.01.2021 01:00
Mathematics, 09.01.2021 01:00
History, 09.01.2021 01:00
Mathematics, 09.01.2021 01:00
Physics, 09.01.2021 01:00
Health, 09.01.2021 01:00
Arts, 09.01.2021 01:00
Mathematics, 09.01.2021 01:00
History, 09.01.2021 01:00
Mathematics, 09.01.2021 01:00
