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Briefly explain the following concepts related to exposure thresholds: time-weighted average, short-term exposure limit, exposure ceiling, and biological exposure indices.
consider a steam power plant that operates on the regenerative rankine cycle with one open feedwater heater. the steam
a string is stretched between rigid supports a distance l apart. it is driven by a force fcoswt located at its
One kilogram of nitrogen gas (N2) is undergoes an isothermal compression from 1 bar, 20C to a final pressure of 12 bar. During the process, the nitrogen transfers heat through a wall to a thermal reservoir with a temperature of 10C.
A hydraulic system is powered by a 9 kw motor and operates at 11 MPa. Assuming no losses, what is the flow rate through the system in units of m³/s?
a gas turbine burns natural gas assume methane where the air is supplied to the combustor at 1000 kpa 500 k and the
a structural member supports loads which produce at a particular point a direct tensile stress of 80 nmm2 and a shear
Define- hydraulic mean radius, hydraulic dept, section factor and most efficient dhannel cross section.
a meeting hall is to be maintained at 25 degc db and 18 degc wb. the barometric pressure is 101.3 kpa. the space has a
A non-reacting gaseous mixture with molar analysis of 74.3% N2, 4.3% O2, 7.1% CO2, and 14.3% H2O(g) enters a counter-flow heat exchanger at 800?F and 1 atm with a volumetric flow rate of 5 ft3/s (State 1) and exits at 200?F (State 2). Calculate the m..
A low pass butter worth filter has a corner frequency of 1 khz and a roll-off of 24 db per octave in the stop band. If the output amplitude of a 3 khz sine wave is .1 V, what will be the output amplitude of a 20 khz sine wave if the input amplitudes ..
A 90-kg man and 60-kg woman stand side by side at the same end of of 150-kg boat ready to dive, each with a 5-m/s velocity of the boat after they have both dived, if (a) the women dives first, (b) the man dives first.
A balanced-cross-flow compact heat exchanger is required for an air heating system that processes 0.5 kg/s air. The inlet temperature for the hot water is 295 K, and the cold air enters at 270 K to be heated to 287 K. The inlet pressure for the hot w..
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