7.4 Question Preview (ID: 13677)
Transformers In Electrical.
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Which of the following is not a part of a transformer?
a) primary coil
b) secondary coil
c) iron core
d) load
What is the IEA for a transformer that has ni of 300 and no of 600?
a) 2
b) 0.5
c) 900
d) 300
The actual mechanical advantage of a transformer is less than the ideal mechanical advantage because of
a) force
b) area
c) resistance
d) current
The basic unit used to measure electrical current is the
a) volt
b) joule
c) watt
d) amp
If you know the specific ratio of wire turns in a transformer, you can find the
a) AMA
b) IMA
c) IEA
d) AEA
The ratio of power out to power in equals
a) voltage
b) current
c) efficiency
d) transmission
this can step up or step down voltage and current
a) electrical force transformer
b) voltmeter
c) multimeter
d) conductor
A transformer that decreases this is called a step down transformer
a) current
b) power
c) voltage
d) source
To find the amount of electric power, you multiply the voltage times the
a) mechanical advantage
b) current
c) power
d) transformer
Electrical transformers can step up or step down:
a) voltage only
b) current only
c) both voltage and current
d) neither voltage nor current
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