UA Local 467 Section 6.2 Quizizz

____ is the desired value to be maintained by a system.

• Control point

• Setpoint

• Offset

• Working point

A(n) ____ is the actual value that a control system experiences at any given time.

• control point

• setpoint

• offset

• controlled variable

____ is control in which a controller produces only a 0% or 100% output signal.

• Closed loop control

• Anticipator control

• ON/OFF (digital) control

• Overshooting control

HVAC electrical controls often use ____ VAC for proper operation of the control system.

• 6

• 24

• 115

• 230

______ is the decreasing of a controlled variable below the controller setpoint.

• Undershooting

• Overshooting

• Offsetting

• Undercutting

A variable-speed drive permits volume control of the ____.

• humidifier

• return fan

• heating coil

• supply fan or pump

In system pressure control, the ____ is connected to a controller which opens or closes a controlled device such as a damper or valve.

• control point

• humidity control

• pressure sensor

• differential pressure control

In differential pressure control, a specific pressure in the system is maintained based on a ____.

• specific setpoint

• difference in pressure between two points in the system

• the offset between the setpoint and actual air temperature

• pressure control valve

The most common method of ____ control is to include a humidity sensor or controller in the building space.

• building space temperature

• return air

• humidity

• volume

____ temperature control is more accurate than building space temperature control because the return air is at a temperature which is an average of all the temperatures in the building space.

• supply air

• mixed air

• return air

• outside air