The reference pressure of a gage pressure scale is __________.

A. the atmospheric pressure at sea level
B. a vacuum


Answer: A

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Los dispositivos de soporte que se ajustan en forma vertical utilizados en la reparación o fabricación de tubería se llaman:

a. horquillas.
b. envolturas.
c. trípodes niveladores.
d. soportes niveladores.

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On a properly operating system, what is the state of the refrigerant as it enters the  metering device?

A. high pressure vapor B. low pressure vapor C. high pressure liquid D. low pressure liquid

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Most DC motor control circuits use a ____ current relay (FCR) or field loss relay connected in series with the shunt field of the motor.

A. fire B. field C. fixed D. first

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With the Volts/Div. switch set to 5 mV, a sine wave measures 5.2 blocks with a 10x probe. The peak-to-peak value of this sine wave is ____.

A. 5.2 V B. 260 mV C. 26 mV D. 5 mV

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