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An electric motor, of mass m = 100 kg and operating speed = 1800 rpm is fixed at the middle of a clamped-clamped steel beam of rectangular cross section, as shown in Fig. 12.32. Design the beam such that the natural frequency of the system exceeds the operating speed of the motor.
Assume that the overall composition is 0.6 wt%C (and 99.4 wt%Fe) and a total weight of 10Kg. At T=727C, how many phases are present and what are their compositions and amounts?
A refrigeration system operating with Refrigerant 134a consists of a compressor, a condenser, a throttle valve and an evaporator. The refrigerant enters the compressor dry saturated at a temperature of -150C and is compressed to pressure of 13.174..
Calculate the static thrust of the turbojet engine having mass flow 88lbm/sec the ratio of air and fuel mass flowing into the turbojet is 50:1 and it's exhaust plane the velocity is 1640 ft/sec and pressure is same as ambient pressure?
we find that 10h are required to successfully carburize a batch of 500 steel gears at 900cwhere the iron has the fcc
consider a large furnace that can supply energy in the form of heat at 2000 r at a steady rate of 3000 btus. determine
One cubic meter of argon initially at 300 K is compressed such that the change in the specific enthalpy is -0.27 kJ/kg-K and the temperature is reduced 100 K. Determine the final volume of the argon. (k = 1.67)
Assume that the preexponential and activation energy for the diffusion coefficient are 1.5 x 10-4 m2/s and 125,000 J/mol, respectively.
a man attached to a rope jumps from a bridge. the natural length of the rope is l the mass of the man is m the mass of
To compare the maximum temperature each surface reaches for a given input power when in free convection.
an automobile of weight w that has a wheel base of lenght l during fourwheel braking. the center of gravity is a
the unit cells of several orthorhombic crystals are described below. what is the bravais lattice of each and how do you
Explore the effect of variations in Dd and h on q', as well as on relative contributions of convection and radiation to the net heat transfer rate. Represent your results graphically.
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