Ohm's Law.txt

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Author:
mikieo
ID:
190780
Filename:
Ohm's Law.txt
Updated:
2012-12-28 13:36:00
Tags:
Ohm Law
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Description:
Ohm's Law
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  1. Electrical pressure is measured in what?
    volts
  2. A thermocoupler will transform what into electricity and is used where?
    Heat. Is used in a water heater as a switch.
  3. A rectifier is used to change what?
    AC to DC. I.e. half wave and full wave rectifiers
  4. Capacitance is measured in what?
    Farads
  5. Capacitance Reactance is measured in what?
    ohms
  6. Storage batteries are rated in what?
    amp-hours
  7. It is customary to speak of the electromotive force as the ________of the circuit.
    voltage
  8. Electricity produced by means of a pressure to a material is called?
    piezoelectricity
  9. The insulation material in the commmutator of a DC generator between the positive and negative bars is made of?
    Mica
  10. An A.C. generator is also called what?
    An alternator
  11. A DC generator can be built with much larger voltage ratings than AC? T or F
    False
  12. A voltmeter measures what?
    voltage difference
  13. What is the most widely used generator today?
    revolving field AC generator
  14. A voltmeter is connected in what with the circuit?
    parallel
  15. What is measured in henrys?
    inductance
  16. Inductive reactance is measured in what?
    ohms
  17. When 3 light bulbs are wired in a single fixture, they are conected in?

    Why?
    parallel

    Because the Delta 277/480 wiring is always connected to a nuetral and then one leg, therefore parallel.
  18. A generator exciter uses what type of current?
    Direct
  19. A nuetral carries what? So a broken neutral will always have higher or lower voltage across the lower watt load?
    The unbalanced load back to the source. A broken nuetral will always have a higher voltage across the lower watt source.
  20. Ohm's law applies only to what type of circuit?
    Purely resistive.
  21. What operates under the principal of electro-chemistry?
    batteries

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