LAP 6 Transformers Exam Questions with Correct Answers Latest Update 2025/2026
___________ _________ is the ability of one coil to induce voltage in another coil. - Answers mutual
inductance
A(n) _______ is an electrical device that converts AC electricity from one voltage level to another.
- Answers transformer
The ___________ coil of the transformer creates a magnetic field that is concentrated by the core.
- Answers primary
The voltage induced in the _________ coil can be used to drive a load. - Answers secondary
The _______ _______ of a transformer determines the relationship between the primary coil and
the secondary coil. - Answers turns ratio
When the secondary voltage in a transformer is less than the primary voltage, the transformer is
called a step-______ transformer. - Answers down
When the secondary voltage in a transformer is more than the primary voltage, the transformer
is called a step-______ transformer. - Answers up
Many machines require a(n) ____________ to step down the line voltage to the machine's
operating voltage. - Answers transformer
Transformers are usually rated in _____________. - Answers volt amperes (VA)
Because of the construction of a transformer, there is usually a small amount of _________
between the primary power and the secondary power. - Answers loss
If a transformer is operated at something other than rated load and voltage, the _________ will be
lower. - Answers efficiency
The current load of a transformer is the current drawn by the _________ winding, Ip. - Answers
polarity
In a(n) ______________ transformer, the primary and secondary windings are physically and
electrically isolated. - Answers isolation
A(n) __________ _________ splits the secondary voltage in half. - Answers center tap
A(n) ___________ transformer is commonly used to reduce the line voltage from 480 VAC or 240
VAC to 120 VAC. - Answers control
The __________ transformer is used for homes and businesses to change the high voltage of
power company distribution lines to common 240/120 VAC supply. - Answers distribution
A(n) _____________ transformer uses the same coil for the primary and secondary. - Answers
___________ _________ is the ability of one coil to induce voltage in another coil. - Answers mutual
inductance
A(n) _______ is an electrical device that converts AC electricity from one voltage level to another.
- Answers transformer
The ___________ coil of the transformer creates a magnetic field that is concentrated by the core.
- Answers primary
The voltage induced in the _________ coil can be used to drive a load. - Answers secondary
The _______ _______ of a transformer determines the relationship between the primary coil and
the secondary coil. - Answers turns ratio
When the secondary voltage in a transformer is less than the primary voltage, the transformer is
called a step-______ transformer. - Answers down
When the secondary voltage in a transformer is more than the primary voltage, the transformer
is called a step-______ transformer. - Answers up
Many machines require a(n) ____________ to step down the line voltage to the machine's
operating voltage. - Answers transformer
Transformers are usually rated in _____________. - Answers volt amperes (VA)
Because of the construction of a transformer, there is usually a small amount of _________
between the primary power and the secondary power. - Answers loss
If a transformer is operated at something other than rated load and voltage, the _________ will be
lower. - Answers efficiency
The current load of a transformer is the current drawn by the _________ winding, Ip. - Answers
polarity
In a(n) ______________ transformer, the primary and secondary windings are physically and
electrically isolated. - Answers isolation
A(n) __________ _________ splits the secondary voltage in half. - Answers center tap
A(n) ___________ transformer is commonly used to reduce the line voltage from 480 VAC or 240
VAC to 120 VAC. - Answers control
The __________ transformer is used for homes and businesses to change the high voltage of
power company distribution lines to common 240/120 VAC supply. - Answers distribution
A(n) _____________ transformer uses the same coil for the primary and secondary. - Answers
