Which of the following is false regarding scaling in process control?
A) Scaling is the resizing of an input or feedback signal to the engineering or process units required by the control system.
B) The scaled value could be used by a PID controller as a process variable.
C) Scaling is not used in ladder logic.
D) The input signal to be scaled could be from an analog sensor.
C
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Technician A says a growing number of six-speed automatic transmissions are available. Technician B says a few makes and models are equipped with seven or eight speeds. Who is correct?
A. A only B. B only C. Both A and B D. Neither A nor B
The subsequent problems deal with the circuit below where R1 = R2 = R.
When the transistor is in cutoff I2 is
A. Iout (nonzero) B. Iin (nonzero) C. 0 D. Iin ? Iout (nonzero) E. Iin + Iout (nonzero)
The subsequent problems deal with the circuit below where:Vs=10V dc, R1=1k?, R2=1k?, and C=0.01µfAssume the circuit is operating in steady state (transients are already dissipated).
What is the voltage across R1?
A. 0 V B. 5 V C. 20 V D. ?20 V E. 10 V
The ancestor of the modern horse was the _____.
Fill in the blank(s) with the appropriate word(s).