The subsequent problems deal with the figure below. Assume all outputs are low to begin with unless indicated otherwise.
After the following PicBasic code, what will be the approximate value for Vout?Low PORTA.2
A. 0 V
B. ?10 V
C. 10 V
D. 5 V
E. ?5 V
Answer: C
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The subsequent problems deal with the circuit below
If A=1, B=1, and C=1, what is X?
A. 0 B. uncertain C. 1
The light striking a pane of glass is refracted as shown in Figure 4.20. The law of refraction states that na sin ?a = nb sin ?b, where na and nb are the refractive indexes of the materi-als through which the light is passing and the angles are from a line that is normal to the surface. The refractive index of air is 1.00. What is the refractive index of the glass?
 FIGURE 1.png)
One difference between digital controller and analog controllers is that analog controllers produce an output almost instantly, while the digital output is based on the sampling rate
Indicate whether the statement is true or false
The ratio of how much light is produced by a lamp (in lumens) to how much energy is consumed by the lamp (in watts) is known as
a. efficacy b. efficiency c. illumination cost d. energy cost