Transmitters or transducers can measure

Transmitters or transducers can measure

a) temperature
b) air flow
c) air flow velocity
d) water flow
e) all of the above







Answer: E

Electronic controllers can be divided into two types

Electronic controllers can be divided into two types

a) on or off
b) modulating and direct acting
c) indirect and direct acting
d) on or off and modulating
e) actuators and relays






Answer: D

An example of a final control element is a

An example of a final control element is a

a) thermostat
b) fire eye
c) relay
d) damper
e) thermocouple

Answer: D

In a basic electrical control system the device that senses a drop in air temperature is called the

In a basic electrical control system the device that senses a drop in air temperature is called the

a) final controlled device
b) pneumatic temperature sensor
c) humidistat
d) thermostat
e) regulator






Answer: D

Control motors are divided into two classifications

Control motors are divided into two classifications

a) large and small
b) AC and DC
c) valve operators and damper operators
d) high voltage and low voltage
e) pump and fan controllers







Answer: C

An example of a controlled device would be

An example of a controlled device would be

a) a damper motor operating air louvers
b) a hot water boiler
c) a radiator
d) a steam boiler
e) a thermostat








Answer: A