Core-Type Transformers

Passage
•
Science
•
12th Grade
•
Medium

Tom Eccles
Used 3+ times
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does 'Double wound' mean in the context of transformers?
A transformer designed for dual voltage inputs
A transformer that can double the input voltage
A transformer with more than one winding
A transformer with two iron cores
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the purpose of using a laminated core in a transformer?
To increase the magnetic field
To improve the transformer's appearance
To reduce eddy currents and power losses
To make the transformer lighter
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the effect of applying an AC voltage to the primary winding of a transformer?
It causes a changing magnetic flux to circulate in the iron core
It directly increases the output voltage
It decreases the magnetic flux in the core
It creates a static magnetic field
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is back EMF?
The voltage that stabilizes the transformer
The voltage induced in the secondary circuit
The voltage that opposes the applied voltage in the primary circuit
The voltage used to power the transformer
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why are transformer windings made from insulated, low resistance conductors?
To increase the transformer's weight
To prevent short circuits within windings or to the core itself
To make the transformer more expensive
To decrease the transformer's efficiency
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does the 'Turns ratio' of a transformer describe?
The ratio of the transformer's weight to its power output
The ratio of primary to secondary turns affecting the induced emf
The difference in voltage between the primary and secondary windings
The difference between the amount of windings on the primary and secondary sides
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What principle allows a transformer to induce a current in the secondary coil?
Direct current induction
Capacitive coupling
Resistive transfer
Mutual inductance
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