Exam 14: Automatic Control Components and Applications

The heater in the thermostat control circuit in the cooling mode is active when the ____.

A low pressure control has a "high event" and a "differential" setting. The technician wants the system to turn on at 28 psig and shut down at 2 psig. What would be the proper settings?

The heater that functions in a thermostat in the heating mode is called the ____________________.

Where would a water regulating valve that is controlling head pressure be installed?

The heat anticipator in the thermostat control circuit in the heating mode is active when the ____.

The difference between system overshoot and system lag is called ____.

The term used to describe when the temperature of a heated room falls below the thermostat's set point is called ____________________.

The advantage of using a thermistor-type thermometer over a mercury-filled thermometer for measuring refrigerant line temperature is that the thermistor-type does not have to be insulated.

Line voltage thermostats have heavier contacts and use which type of sensing element?

A helix coil is used in some applications to sense temperature in a moving air stream.

If the suction pressure of a system is 60 psig and the oil pump outlet is 85 psig, what is the net oil pressure?

Explain the most accurate way to measure the current through the heat anticipator.

The term used to describe when the temperature of a heated room rises above the thermostat's set point is ____________________.

The heater that functions in a thermostat in the cooling mode is called the ____________________.