Glossary of Terms X

Question 1

Set Up

Answer 1

Raising of the temperature set point for the conservation of cooling energy during unoccupied periods

Question 2

Subbase

Answer 2

Part of a thermostat that is mounted to a wall, to which all of the interconnected wiring is attached

Question 3

Swing

Answer 3

Actual change in temperature of a conditioned space which is the difference between overshoot and undershoot.

Question 4

System Lag

Answer 4

Time lapse for the heating or cooling cycle to start or stop causing overshoot or undershoot of the set point.

Question 5

Thermistor

Answer 5

Semiconductor that will vary its resistance with a change in temperature.

Question 6

Thermostat

Answer 6

A temperature actuated switch.

Question 7

Undershoot

Answer 7

Conditioned space temperature that is lower than desired due to system lag.

Question 8

Wind Chill

Answer 8

The cooling effect of the movement of air at a high velocity.

Question 9

Alternation

Answer 9

A single period sine wave that increases from zero to it’s maximum and returning to zero, all in one direction.

Question 10

Amplitude

Answer 10

The measurement of the magnitude of a sine wave from zero

Question 11

Cycle

Answer 11

Two complete alternation of an alternating current measured in hertz. (Hz)

Question 12

Frequency

Answer 12

The rate if time at which alternating current changes it’s direction of flow expressed in terms of cycles per second. (60 cycle power changes direction 120x’s per sec.)

Question 13

Magnitude

Answer 13

The size or numerical value if a wave form or graph

Question 14

Phase

Answer 14

The number of current alternating at different times in alternating current

Question 15

Power

Answer 15

The rate at which work or mechanical energy is performed