Ohm's Law.txt

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Electrical pressure is measured in what?

volts
A thermocoupler will transform what into electricity and is used where?

Heat. Is used in a water heater as a switch.
A rectifier is used to change what?

AC to DC. I.e. half wave and full wave rectifiers
Capacitance is measured in what?

Farads
Capacitance Reactance is measured in what?

ohms
Storage batteries are rated in what?

amp-hours
It is customary to speak of the electromotive force as the ________of the circuit.

voltage
Electricity produced by means of a pressure to a material is called?

piezoelectricity
The insulation material in the commmutator of a DC generator between the positive and negative bars is made of?

Mica
An A.C. generator is also called what?

An alternator
A DC generator can be built with much larger voltage ratings than AC? T or F

False
A voltmeter measures what?

voltage difference
What is the most widely used generator today?

revolving field AC generator
A voltmeter is connected in what with the circuit?

parallel
What is measured in henrys?

inductance
Inductive reactance is measured in what?

ohms
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.
A generator exciter uses what type of current?

Direct
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.
Ohm's law applies only to what type of circuit?

Purely resistive.
What operates under the principal of electro-chemistry?

batteries

Author

mikieo

190780

Card Set

Ohm's Law.txt

Description

Ohm's Law

Updated

12/28/2012, 6:36:00 PM

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