Determine the Boolean function describing the operation of the circuit shown in Figure 13.18 and simplify it using Boolean algebra.
Analysis:
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Oxygen at T=400 K and P=2 atm flows into an adiabatic, reversible nozzle operating at steady-state. The stream has a negligible velocity as it enters the nozzle but is ejected at a high velocity. The exiting oxygen is at P=0.5 atm. You may assume that oxygen is an ideal gas with constant Cp*=(7/2)R. On a mass basis, this is equivalent to CP = 0.909 kJ/kg-K.
A) Find the change in entropy of the universe resulting from this process. B) Find the temperature and velocity of the oxygen leaving the nozzle. C) Find ?U for the oxygen in J/mol.
What type of pump is typically used for the brake pump?
A. Piston B. Gear C. Vane D. None of the above
If the load current increases in a simple zener regulator, the ________
A) current through the series resistor increases B) zener current decreases C) total current increases D) voltage across the series resistor decreases
Larger blower wheels are typically operated by ________ motors
A) shunt field B) PSC C) belt driven D) capacitor start