Test 2 Flashcards
Final prep (28 cards)
When a sawtooth-shaped signal is applied to the input of a
differentiator, a _____ -shaped signal is produced at the output.
Sine
What is the output voltage of the circuit in Figure 2-30? provide an exact numerical value [Question 3]
Provide a an exact number Example for a positive value is 9 or for a negative value -2
= -18.0000
An inverting op amp circuit has RF = 5 kilohms and RIN = 1 kilohm. What is the gain of this circuit?
Provide a an exact number Example for a positive value is 9 or for a negative value -2
= -5.0
The faster the voltage applied to the input of a differentiator changes, the __________ the output becomes.
Larger
The output of a non-inverting op amp is ____________________ volts when 0.5 volts are applied to the input, the feedback resistor is 50K ohms, and the other resistors are 5K ohms.
round your answer to the nearest tenth. Example for a positive value is 9.3679 the answer would be 9.
= 5.50
The longer a signal is applied to the input of an integrator op-amp, the __________ the output becomes.
Larger
If the voltage applied to an inverting op amp is 3 volts, the feedback resistor is 20K ohms and RIN is 10K ohms, the output voltage is __________.
= -6v
When a square wave is applied to an integrator op amp, the output is a(n) __________.
sawtooth wave
The term derivative means “ _____ of change”.
Rate
A derivative controller produces output that is proportional to the amplitude of the error signal.
FALSE
Offset is reduced by
Increasing the gain of the system
Narrowing the PB
If the error signal in a closed-loop system is changing very rapidly, the derivative output is __________.
Large
An increase in the following error will cause a(n) ____________________ (increase) or (decrease) in the speed of a PID servo system actuator.
Increase
In the on/off system, the output of the controller __________ as the measured value passes through the gap.
does not change
The __________ control mode is used to overcome offset.
reset
If the full temperature range of an on/off heating system is from 30 to 100 degrees and the differential gap is 5 degrees, what is the deadband?
Total control range = 70*F
Different gab 5*F
Dead band = 7.14%
If the valve should block flow when a control signal fails to occur, an Air to close control valve should be used.
Air to close
Which of the following statements describes the control requirements that must be achieved to ensure product quality?
All provided answers
The reliability of a sensor is determined by _____
Accuracy
Response time
Precision
The ___ control valve is recommended for high-pressure applications.
double-seated
List five types of variables that are commonly controlled during a continuous process
temperature; level; flow; pressure; production composition
The two functions of a Transmitter are to convert the output of a sensor into a standardized signal and to send a signal to a distant location.
Transmitter
The emphasis in ____ is on the performance of the loop as a “regulator”, i.e. disturbance rejection.
process control
When a 4- to 20-mA electronic transmitter is being calibrated, the current it produces when the span adjustment is made is ____________________ mA.
20 mA
