
Transformers
Quiz
•
Other
•
11th Grade
•
Practice Problem
•
Hard
Ibtisam Rafiq
Used 261+ times
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A transformer is ...
a rotating machine
an electromechanical energy converter
an electromagnetic machine
AC-DC machine
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
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
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A step up transformer has its primary winding to secondary winding ratio
Greater than 1
Equal to 1
Less than 1
Unknown
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Primary winding of a transformer is determined by ...
which winding is nearer to the load
which winding is connected to the source
which winding has more turns
which side has the highest voltage
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The electrical energy is transferred through the ... in a transformer.
electric field
rotor
air space
magnetic field
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Choose the correct statement:
The ratio of the secondary voltage to the primary voltage is equal to the ratio of the primary turn to the secondary turn
The ratio of the primary current to the secondary current is equal to the ratio of the primary voltage to the secondary voltage
The ratio of the primary apparent power to the secondary apparent power is equal to the ration of the primary voltage to the secondary voltage
The ratio of the secondary current to the primary current is equal to the ratio of the primary turn to the secondary turn
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Mutual induction means: (Choose the correct statement)
A conductor (wire) placed in a varying magnetic field will have a current induced in it
A conductor produces varying magnetic field
Two conductors must be connected together to produce current
Two conductors cannot used magnetic field to produce current
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