A submaster controller resets the set point of the master controller. - ANSWER False
Normally open refers to a controlled device that opens when no operating force is applied. - ANSWER True
A P.E. Switch is used to change an electrical signal to a pneumatic output. - ANSWER False
Moisture ...
A submaster controller resets the set point of the master controller. - ANSWER False
Normally open refers to a controlled device that opens when no operating force is applied. - ANSWER
True
A P.E. Switch is used to change an electrical signal to a pneumatic output. - ANSWER False
Moisture and dirt are detrimental to the operation of pneumatic control systems. - ANSWER True
A static pressure regulator senses the pressure in the plenum the regulator controls. The sensor that
indicates this pressure to this regulator is called a_____? - ANSWER Static tip
The intensity of a force applied to a confined liquid or gas is transmitted equally in all directions
throughout the fluid in the form of fluid pressure. This statement is _____? - ANSWER Pascals Law
The greater the applied pressure on cylinder piston or the larger the cylinder piston area, the greater the
mechanical output force? - ANSWER True
A combination starter is a switch for disconnecting and a starter mounted and one enclosure. - ANSWER
True
Full load amperage of the motor is the same as starting current. - ANSWER False
A motor control circuit that is designed so that it must be restarted by pushing a start button after a
power interruption is a _____. - ANSWER 3 wire control
To reverse the direction of rotation of a 3 phase motor, you _____? - ANSWER Interchange the
connection of the motor
, You have a normally closed steam humidifier valve. What action would the hugrostat/humidistat be? -
ANSWER Reverse action
PS1 is what type of switch? - ANSWER Electric pressure switch
Contactor coil 1 pulls in an electric strip heater on a cold air duct to a room. The pneumatic room
thermostat operates PS1. The thermostat action is what control action? - ANSWER Reverse
If we lost control power in the system above, the room temperature would _____? - ANSWER
Fall/decrease in temperature
In this system, if we lost control branch pressure to PS1, the room temperature would _____? - ANSWER
Fall/decrease in temperature.
The transformer would be of what type? - ANSWER Step down
The thermostat pictured above is best described as a _____? - ANSWER Single pip
If the ambient temperature increased and the bimetal warped toward the nozzle (down), the control
action would be _____? - ANSWER Direct action
The control action of this thermostat is _____? - ANSWER Reverse acting
The branch pressure for full heating would be _____? - ANSWER 13 PSIG
The branch pressure for full cooling would be _____? - ANSWER 3 PSIG
This type of system could best be described as ____? - ANSWER Variable Volume/terminal reheat
The heating valve is a pipe _____. - ANSWER Normally closed
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