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WorksheetsTransformers
Total questions: 14
Worksheet time: 11mins
What is the name of the the winding that is connected to the source/power supply
Primary
Secondary
Np/Ns = Ip/Is
True
False
A transformer is a magnetically operated machine
True
False
The windings of a transformers are wound on the (a) .
What does Is means?
(a)
The voltage ratio of a transformer is 7:1.What is the current ratio?
(a)
If a transformer input power is 100 % and the output is 93%,how much losses would occur in the transformer?
193%
93%
7%
3%
Which side of a step up transformer has more current
primary
secondary
Which voltage is a typical voltage of a power transformer
120 V
240 V
200 V
400 KV
A (a) transformer is used to transform high current to a desired value for a measuring instrument
If the turns ratio of a transformer is 2:1 and the primary has 200 turns, how many turns are on the secondary ?
400 turns
100 turns
2 turns
1 turn
When a coil induces voltage in itself this is called (a) inductance
When a coil induced voltage in another coil this is called (a) inductance
An (a) transformer has only one winding which is used in both the primary and secondary
