7.4: Question Preview (ID: 13677)


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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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