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The Hertzian dipole. A short dipole antenna is 0.02λ long and carries a current of 2 A at 150 MHz. Calculate:
(a) The electric and magnetic fields in the near field.
(b) The electric and magnetic fields in the far field.
(c) The radiation resistance and radiated power of the antenna.
(d) Maximum range in the direction of maximum power density if the time averaged power density required for reception is 10-10 W/m2.
a closed feedwater heater of a rankine cycle is used to heat the working fluid water from a state of 370acircdegf
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A small, high-speed turbine operating on compressed air produces a power output of 0.1 hp. The inlet state is 120 psi, 200°F, and the exit state is 14.7 psi, - 20 F. Assuming the velocities to be low and the process to be adiabatic, find the required..
at a surface cutting speed of 190 mmin the productive tool life was 60 minutes. at a surface cutting speed of 225 mmin
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