To close a control circuit and start a system, a remote-bulb thermostat depends on a _____.

a. bimetal strip that expands or contracts
b. refrigerant-filled bulb that responds to temperature changes
c. mercury-filled bulb that responds to temperature changes
d. thermocouple that changes its resistance as the temperature changes


b. refrigerant-filled bulb that responds to temperature changes

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What application of heat exchangers is used to supply the necessary column heat?

A) Reboiler B) Preheater C) Chiller D) Condenser

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If the relative humidity of air at 55°F (13°C) is 65%, which of the following temperatures is a possible dew point?

a. 43°F (6°C) b. 55°F (13°C) c. 85°F (29°C) d. 100°F (38°C)

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Answer the following statement(s) true (T) or false (F)

1. Good conductors have many free electrons in their structure. 2. Once charged, a capacitor can remain charged forever. 3. Any inductance coil is really a combination of inductance and resistance in series. 4. All capacitor manufacturers use a standard set of color codes. 5. A positive temperature coefficient indicates that the capacitance will decrease with an increase in temperature.

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All op amps use bipolar transistors for input.

Answer the following statement true (T) or false (F)

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