Which of the following hazards is specific only to sub-surface mining?
dust
noise
poor...
Engineering, 30.01.2021 19:50 lizzy2951
Which of the following hazards is specific only to sub-surface mining?
dust
noise
poor air quality
equipment malfunction
Answers: 3
Another question on Engineering
Engineering, 04.07.2019 18:10
The thermal expansion or contraction of a given metal is a function of the f a)-density b)-initial temperature c)- temperature difference d)- linear coefficient of thermal expansion e)- final temperature f)- original length
Answers: 2
Engineering, 04.07.2019 18:10
Which of the following components of a pid controlled accumulates the error over time and responds to system error after the error has been accumulated? a)- proportional b)- derivative c)- integral d)- on/off.
Answers: 2
Engineering, 04.07.2019 18:20
Asimple rankine cycle uses water as the working fluid. the water enters the turbine at 10 mpa and 480c while the condenser operates at 6 kpa. if the turbine has an isentropic efficiency of 80 percent while the pump has an isentropic efficiency of 70 percent determine the thermal efficiency
Answers: 1
Engineering, 04.07.2019 18:20
Water vapor initially at 10 bar and 400 °c is contained within a piston-cylinder assembly. the water lost heat to the surrounding according to isochoric (iso-volumetric) process until its temperature is 150 °c. the water is then condensed isothermally to saturated liquid. for the water as a system, calculate the work in kj/kg
Answers: 2
You know the right answer?
Questions
Social Studies, 01.07.2019 17:30
English, 01.07.2019 17:30
Mathematics, 01.07.2019 17:30
Mathematics, 01.07.2019 17:30
Mathematics, 01.07.2019 17:30
English, 01.07.2019 17:30
Social Studies, 01.07.2019 17:30
Mathematics, 01.07.2019 17:30
Biology, 01.07.2019 17:30
