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Describe the hazards associated with carrying out mechanical maintenance activities (such as handling oils, greases, stored pressure/force, misuse of tools, using damaged or badly maintained tools and equipment, not following laid-down maintenance procedures), and how to minimise these and reduce any risks
a three-blade helicopter blade rotates at 200 rpm. if each blade is 12 ft long and 1.5 ft wide estimate the torque
Set up an equation to find the temperature of the billet as a function of time in terms of the pertinent parameters. Assume that radiation also plays a role in the dissipation of heat to ambient.
What is the two-block message that you chose? What is the tag that you chose? Why is your chosen tag a valid tag for your two-block message?
The properties given in the box below are for the whole Ibeam. The position of the centroid of the half-section (relative to the top of the section) is shown in the figure.
Construct a choice table for interest rates from 0% to 100%. The firm's minimum attractive rate of return is 8%. Which alternative should be selected?
what is the cw when i10 per year of 1500 per year starting in year one and continuing forever and 10000 in year five
Three small fans are located near each other at 1.5 m above the ground, and produce an annoying noise in the 250 Hz band. A localresident whose bedroom window is at the same height as the fans and is 80 m away complains about this noise. Measurements..
A stirling cycle engine uses 1 kg of nitrogen (N_2, c_v= 0.743 kJ/KG*K, c_p = 1.039 kJ/kg*K) as the working fluid. The nitrogen begins its isothermal expansion at 1000K, 500 kPa. During the expansion process the volume of nitrogen increases by a fact..
10 kg of gaseous oxygen is compressed in a piston-cylinder device from an initial state of .8 m3kg to a final state of
Estimate the energy that a runner expends to overcome aerodynamic drag while running a complete marathon race. This expenditure of energy is equivalent to climbing a hill of what height? List all assumptions and show all calculations.
The 1200-lb trunk has a cen- ter of gravity at G.The felling notch at O is sufficiently large so that the resisting moment there is negligible.
determine the heat transfer during an isothermal expansion of 2 lbm of air from 15 ft3 if the temperature is 110
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