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The size of a system has no effect on the process reaction rate
false
out of the four characteristics which one does not affect the performance of the controlled in the automatic controlled system?
distance
what controls the amount of water flowing past the point during an interval of time
rate of control
what are two types of electrical power devices that position final control elements
solenoid and electric motor
a controlled volume pump output is proportional to the square of its input speed
false
a better solution for mechanical reset for a device is to have it reset manually rather than automatically
false
which three is a mode of controlling
on/off
proportional plus reset,
proportional plus reset plus rate
monometer is a pressure gauge that responds to large pressure changes
false
a bell type gauge is
sensitive
accurate
stable
what is not a usual element filled temperature system
bi metal strip
what type electronic temperature sensor make use of voltage crated by joining two dissimilar metals
thermocouple
electric liquid level controllers can be used for
low and high level alarms,
discrete level indications,
operate pumps
velocity of slow equations
v=square root 2G*H
a choke provides fixed flow control
true
the electrical analog output of the tlc is like the transmitters output
2 to 20 milliamp signal
the rate at which the small plunger of the compensating dashpot returns to normal is usually determined by the setting of the
needle valve
the compensating dashpot serves to prevent over-travel or hunting of the gates by
re-centering the pilot valve
when using an ohm meter short the leads together and set the meter to read ___ while adjusting the zero adjustment knob.
zero ohms
power factor measures
the watts over volts ampers