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Oct 14th, 2013
RockCafe
Category:
Other
Price: $20 USD

Question description

XL

  • Explain briefly why XL limits the amount of alternating current.
  • Explain why XL increases with higher frequencies and more inductance.  How might you use this fact in an application.

Inductive Circuits

  • What characteristic of the current in an inductance determines the amount of induced voltage? State briefly why.
  • Why is the voltage across a resistance in phase with the current through the resistance?

RC and L/R Time Constants

  • Give an application in electronic circuits for an RC circuit with a long time constant and with a short time constant.
  • Discuss why an arcing voltage could be a problem with coils used in switching circuits.

Power

  • Compare real power and apparent power.
  • Define power factor and discuss the topic of power factor correction.


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