What is the difference between an azeotropic mixture and a near-azeotropic mixture?
What will be an ideal response?
An azeotropic mixture will not separate into its component refrigerants and will have specific boiling and condensing points. A near-azeotropic mixture can and will separate readily into its component refrigerants. This causes a range of condensing/boiling points called "glide." These near-azeotropic mixtures must be removed from their container or vessel in the liquid form to prevent "fractionation."
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Technician A says aluminum oxide forms if the coolant becomes too diluted with water. Technician B says the thermostat on all engines remains closed until its predetermined opening point. Who is correct?
A. Technician A B. Technician B C. Both technicians D. Neither technician
A windmill consists of a motor, rotating blades, and structure. Explain the operation of the system when wind speed rotates the shaft of the motor at a speed higher than its no-load speed. In which quadrant does the machine operate?
What will be an ideal response?
A few spiders produce a venom that is a calcium-channel blocker. Where would this venom have on nerve impulse transmission?
A) at the axon terminal B) at the axon hillock C) along the dendrite D) along the cell body membrane E) at the postsynaptic membrane
If the bandwidth of a low-pass filter is 0 to 1 kHz, the cutoff frequency is ________
A) 1 kHz B) 0 Hz C) 500 Hz D) 2 kHz