What is the purpose of the power steering pressure switch?
A) Increase engine idle during slow cornering to prevent engine stall
B) To regulate power steering pump pressure
C) Both A and B
D) Neither A nor B
A
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This problem concerns vapor-liquid equilibrium mixtures of compounds Q and W. We know that:
• The vapor pressure of pure compound Q is 0.5 bar at 300 K. • The vapor pressure of pure compound W is 1.0 bar at 300 K. A) If a liquid is composed of 40% Q and 60% W and at 300 K, give your best estimate of the bubble pressure and composition of the first bubble of vapor that WOULD be observed IF Q and W formed ideal liquid solutions. Q and W do not, in reality, form ideal solutions. In reality, for vapor liquid equilibrium at 300 K, there is an azeotrope at P=0.9 bar and T=300 K, in which the liquid and vapor phase both contain 40% Q. Use this fact—as well as the vapor pressure data given above—to answer questions B and C. B) Give your best estimate of the activity coefficients of Q and W in the azeotropic mixture at 300 K. C) Give your best estimate of the bubble pressure and composition of the first bubble of vapor in equilibrium with a liquid that is composed of 75% Q and 25% W at 300 K.
Three phase motors have ____.
A. three start and three run windings for each phase B. one start and one run winding for each phase C. run windings only D. a start switch in each phase circuit
The _____________________ marrow is mostly made up of fat storage cells
Fill in the blank(s) with correct word
In eastern Europe under enlightened absolutism, which way did ideas and reforms flow?
a. from the top down, from the monarchy to the rest of society b. both up and down, from the nobility and the clergy to monarchs and the rest of society c. bottom up, from the wealthy educated and commercial elites to the rest of society d. both up and down, from a professional bureaucracy to the rest of society