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If no current flows through the base of the transistor, the transistor acts like a closed switch.
Q1: Because the diac is a bidirectional device,
Q3: One of the basic rules for series
Q4: Photo-operated devices fall into one of three
Q5: Regardless of whether a flow switch is
Q6: What are the two factors which determine
Q8: How can you produce white LEDs?
Q9: The wound rotor motor can be started
Q10: Across-the-line starting is only used for alternating
Q11: _ are often used to check motor
Q12: Figure 14-1 <br> <br> <img src="https://d2lvgg3v3hfg70.cloudfront.net/TBX9367/.jpg" alt="Figure