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Why are the first few turns of high voltage transformer coils especially well insulated?
Wiki User
∙ 11y ago
because of the surge voltage, end coils of the winding have lesser turns and hence the mmf distribution of the h.v windings is not uniform along the axial direction....
Wiki User
∙ 11y ago
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The ratio of coils on the input side of a transformer to coils on the output side is the ratio of the input voltage to the output voltage?
I think you mean 'turns' rather than 'coils' (a coil is made up of a number of turns). The answer is that, yes, the turns ratio is the same as the voltage ratio, for an ideal transformer.
Summary of the step-down transformer?
A step- down transformer is one whose secondary voltage is less than its primary voltage, it is used to reduce 'step down' the voltage applied to it. The number of coils in the primary circuit is greater that the secondary circuit. For instance, to step down 480 Voltage to 240 voltage, you need a step down transformer whose ratio of primary coils to secondary coils is 2:1.
What happen if you apply triangular input to transformer?
there will be no neutral point in the circuit and high voltage will be across the transformer coils
How can a change in voltage of a transformer's primary coil create a change in the secondary coil's voltage without the coils touching?
The more coils you have on one side will increase the magnetic force
Why ac current is used in a transformer?
AC current or DC current can be used in transformers. A transformer is made of two coils of wire, the input coil induces a current into the output coil. Transformers change the voltage either up (step up transformer) or down (step down transformer). The amount of change in voltage is dependent solely on the number of windings in both coils in the transformer. DC transformers work exactly the same way AC transformers do.
The ratio of coils on the input side of a transformer to coils on the output side is the ratio of the input voltage to the output voltage?
I think you mean 'turns' rather than 'coils' (a coil is made up of a number of turns). The answer is that, yes, the turns ratio is the same as the voltage ratio, for an ideal transformer.
How can a change in the voltage of a transformer's primary coil create a change in the secondary coils voltage without the coils touching?
The more coils you have on one side will increase the magnetic force
Summary of the step-down transformer?
A step- down transformer is one whose secondary voltage is less than its primary voltage, it is used to reduce 'step down' the voltage applied to it. The number of coils in the primary circuit is greater that the secondary circuit. For instance, to step down 480 Voltage to 240 voltage, you need a step down transformer whose ratio of primary coils to secondary coils is 2:1.
What happen if you apply triangular input to transformer?
there will be no neutral point in the circuit and high voltage will be across the transformer coils
What is an electrical device that changes the voltage of electricity through the use of two sets of coils.?
The electrical device is a transformer.
When you have 12 coils on the output side of a transformer and 3 coils on the input side with 100 volts output what is the input voltage?
25
What happens when a transformer is operated at no load with high voltage?
It depends on how much voltage you have applied. If you apply rated voltage nothing happens only core losses will be there on the transformer nothing will happen apart from that. If you go on increase the voltage core losses will increase and transformer will get heated up. After attaining the breakdown voltage of insulation, insulation in the primary and secondary will fail and the coils will get short circuited then the coils will burn.
How can a change in the voltage of a transformer's primary coil create a change in the secondary coil's voltage without the coils touching?
The more coils you have on one side will increase the magnetic force
How can a change in voltage of a transformer's primary coil create a change in the secondary coil's voltage without the coils touching?
The more coils you have on one side will increase the magnetic force
What would happen if the number of coils on both sides of the transformer were the same?
This is what is known as a 1:1, or ISOLATION Transformer. There is no change to the Voltage or Current of the input, but this does provide a separation between the input and output of the transformer. This separation is sometimes required for safety purposes, especially in a medical environment.
Why is it using low resistance coils in transformer minimize power loss?
To avoid voltage drop in the coil.
HOW do I SELECT A STEP DOWN TRANSFORMER?
By looking to the number of turns in the Primary and Secondary Coils. "A Step down transformers are designed to reduce electrical voltage. Their primary voltage is greater than their secondary voltage. This kind of transformer "steps down" the voltage applied to it."
