What are the by-products (emissions) from a fuel cell?
A) CO B) Water
C) CO2 D) Non-methane hydrocarbon
B
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The ______ and ______ provide electrical contact with the rotor.
A. stator, field B. slip rings, brushes C. poles, brushes D. windings, armature
Which of the following statements is false?
A. The ideal solution molar enthalpy is equal to the ideal gas molar enthalpy if evaluated at the same temperature and pressure. B. The partial molar volume of component i in the ideal gas state at the system temperature and pressure is not equal to the pure component molar volume evaluated at the system temperature and the partial pressure of component i. C. The partial molar internal energy of component i in the ideal gas state evaluated at the system temperature is equal to the pure component molar internal energy of component i in the ideal gas state evaluated at the system temperature. D. All of the above. E. None of the above.
Which of the following systems uses compression pumps and condensers to cool the air?
A) Evaporative system B) Mechanical compression system C) Thermoelectric system D) Absorption system
Which of the following inductance motors use a centrifugal switch?
A. resistance-start, induction-run B. capacitive-start, induction run C. both a and b