Volume meters record natural gas volume so that the utility can charge the user for the fuel used. The usual basis of the charge is the _________, the amount of gas that delivers 100,000 BTU.
a. therm
b. watt
c. kilowatt
d. gallon
ANSWER: a
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Which of the following statements about liquid-liquid equilibrium is true?
A. When a binary mixture is immiscible, it means that the composition of one of the liquid phases is almost all the first component, while the composition of the other liquid phase is almost all of the second component. B. When the activity coefficient of one of the components is above 10, a miscibility gap will exist. C. When the A parameter for the 1-parameter Margules equation is greater than 1, it means a miscibility gap will be predicted for that system. D. At low temperature, the Wilson equation will predict a miscibility gap for alkane + alcohol systems. E. None of the above are true.
Two technicians are discussing differentials. Technician A says that all differentials are vented. Technician B says that a clogged vent can cause the rear axle seal to leak. Which technician is correct?
A) Technician A only B) Technician B only C) Both technicians D) Neither technician
All of the following are types of brake fade EXCEPT:
A. gas. B. drum. C. mechanical. D. lining.
During signal processing, the RF signal is usually converted to a lower frequency by mixing the RF with an oscillator. This new frequency is known as the
A) drop-down frequency B) intermediate frequency C) reference frequency D) internal frequency