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Worksheets1 Transformer
Total questions: 8
Worksheet time: 5mins
In order for electromagnetic induction to occur, there must be relative............between a magnetic field and a conductor.
race
Motion
field
voltage
Ratio of voltages is equal to ratio of _______________________.
number of iron sheets in core
number of coil
number of turns in coil
number of electromagnetic
A transformer has 100 turns in the primary coil and 25 turns in the secondary coil. When a 120 V is applied to the primary coil, what is the voltage in the secondary coil?
480V
30V
20V
450V
The transformer is a device used to .......... the value of a voltage.
steady
resist
change
anchor
If a transformer reduces voltage, it is called a....................... transformer.
step left
step right
step up
step down
This picture is an example of a ________________.
Motor
Generator
Step-up transformer
Step-down transformer
The function of a transformer is to ...
raise and lower the apparent power levels
transfer DC voltage from the primary winding to the secondary winding
increase or decrease A.C voltage or A.C current levels
transform mechanical energy into electrical energy
What is the meaning of transformer?
Optimus Prime
A device that transfers electrical energy from one circuit to another
Autobots
Megatron
