When replacing or repairing any electrical components, always verify that the:
A) Refrigerant is a non-ozone-depleting chemical.
B) Replacement part is rated for more voltage than the original.
C) Power source is disconnected and locked out.
D) Voltage is available to the unit.
C
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Which of the following values is closest to a perfect vacuum?
a. 50 microns b. 500 microns c. 1,300 microns d. 25,000 microns
A series circuit has three resistances: 12, 3, and 6 ohms. Circuit voltage is 14.3 volts. What is the total circuit resistance?
Fill in the blank(s) with the appropriate word(s).
If the input impedance is defined as Zin = Vs/Is, find the input impedance of the op amp circuit in Fig. 10.116 when R? = 10 k?, R? = 20 k?, C? = 10 nF, C? = 20 nF, and ? = 5000 rad/s.
 FIGURE 1.png)
The output of a three-input summing op amp is ____________________ volts when 1, 2, and 3 volts are applied to the inputs, and all resistors are 10K ohms.
Fill in the blank(s) with the appropriate word(s).