25 Chapters
TEST-BANK for
Electricity for the Trades
3rd Edition
Author(s): Petruzella
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Sample Questions
  • For the alternator connection shown, V equals:
  • A string of twelve holiday lamps is designed to be connected in series to a 120-V source. If one of ...
  • Thyristor semiconductors operate similar to rheostat to control current flow.
  • Alternator ________ is the process of connecting a three-phase alternator to another alternator or ...
  • In a three-phase alternator connection, the voltage measured directly across one of the windings is ...
  • The bipolar junction transistor (BJT) is a current-controlled device.
  • The alternator connection shown would be classified as a ________ connection.
  • The transistor is a two-terminal device.
  • The field-effect transistor (FET) is a current-controlled device.
  • The triac is essentially equivalent to two SCRs connected in series.
  • A PLC system has the ability to change the control scheme without having to physically change the wiring.
  • The AND gate, implemented using hardwired switches, will mean switches connected in parallel.
  • All inputs to a NAND gate must be 1 to produce a 1 output.
  • All inputs to an AND gate must be 1 to produce a 1 output.
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