Transformer Test 1 questions and
answers
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secondary coil ✔✔Polarity is determined by the direction the __________ is wrapped in relation
to the direction to the primary coil is wrapped
right, left ✔✔If a transformer is additive the x1 bushing will be located on the ______________
(while facing the transformer. If it is subtractive it will be on the ________
additive, subtractive ✔✔Transformers 200 kVA and smaller with primary ratings of 8660 volts
and below will be rated ____________. All others will be rated _______________
iron and copper loss also know as load and no-load loss ✔✔what are the two main losses of the
transformer called
no-load losses ✔✔the iron losses, also known as __________________, are created by the
oscillation of the magnetic field in respect to the core.
current ✔✔the copper losses are caused when a _________flows in a conductor (caused by
load).
I squared(2) R loss ✔✔This flow generates heat in this conductor, and as load increase, the heat
increase. This heat limits current flow, an is also referred to as the ___________ in engineering
circles
, iron and copper loss ✔✔without out ______________ and ________________, the transformer
would be at 100%
Impedance ✔✔______________ is total opposition to current flow caused by the transformer.
Impedance ✔✔____________ is made of of resistance and inductive reactance. It is important to
mineworkers to know when transformers are to be banked or parallel.
bank or parallel ✔✔to _____________ , their impedancesmust be with in +_ 10% of each otherit
is an electrical device that converts voltage from either high voltage to low voltage, or low
voltage to high voltage. ✔✔What is a transformer
Yes ✔✔Is the primary side always the high side
It is located above the primary bushing on a pad-mounted transformer. They are used for both
energizing and de-energizing the transformer. ✔✔What is a bayonet fuse
Stands for Kilovolt-Amperes and is the wattage rating of the transformer. The rating of the
transformer is usually stenciled on the front of a transformer. if stamped with 15kVA = 15,000
watts ✔✔Explain what kVA means and how it is used
answers
Save
secondary coil ✔✔Polarity is determined by the direction the __________ is wrapped in relation
to the direction to the primary coil is wrapped
right, left ✔✔If a transformer is additive the x1 bushing will be located on the ______________
(while facing the transformer. If it is subtractive it will be on the ________
additive, subtractive ✔✔Transformers 200 kVA and smaller with primary ratings of 8660 volts
and below will be rated ____________. All others will be rated _______________
iron and copper loss also know as load and no-load loss ✔✔what are the two main losses of the
transformer called
no-load losses ✔✔the iron losses, also known as __________________, are created by the
oscillation of the magnetic field in respect to the core.
current ✔✔the copper losses are caused when a _________flows in a conductor (caused by
load).
I squared(2) R loss ✔✔This flow generates heat in this conductor, and as load increase, the heat
increase. This heat limits current flow, an is also referred to as the ___________ in engineering
circles
, iron and copper loss ✔✔without out ______________ and ________________, the transformer
would be at 100%
Impedance ✔✔______________ is total opposition to current flow caused by the transformer.
Impedance ✔✔____________ is made of of resistance and inductive reactance. It is important to
mineworkers to know when transformers are to be banked or parallel.
bank or parallel ✔✔to _____________ , their impedancesmust be with in +_ 10% of each otherit
is an electrical device that converts voltage from either high voltage to low voltage, or low
voltage to high voltage. ✔✔What is a transformer
Yes ✔✔Is the primary side always the high side
It is located above the primary bushing on a pad-mounted transformer. They are used for both
energizing and de-energizing the transformer. ✔✔What is a bayonet fuse
Stands for Kilovolt-Amperes and is the wattage rating of the transformer. The rating of the
transformer is usually stenciled on the front of a transformer. if stamped with 15kVA = 15,000
watts ✔✔Explain what kVA means and how it is used
