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Are you are asking why an alternator's terminal voltage needs to be increased, using a transformer, for transmission?
The answer is that the voltage supplied by an alternator is determined by how many conductors can be inserted into its stator slots and this, in turn, is limited by the physical size of the alternator. So the output of alternators is limited to around 300 kV.
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∙ 12y ago
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Electrons flow from areas of higher to lower voltage or from areas of lower to higher voltage?
Electronsflow from areas of lower to higher voltage, while Current flow from areas higher to lower voltage.
What is the difference between a transformer and a rectifer?
A transformer is used to change the value of a voltage applied to the transformer's primary winding to a different voltage value taken from the transformers secondary winding. A rectifier is used to change an alternating current value to a direct current value.
What is voltage amplitude?
Voltage amplitude is the maximum value of a voltage.
What is the applied voltage on a circuit in which .5A is flowing and 10W is generated?
.2A
Is it the value of input voltage equal the value of output voltage?
No. There are several factors that may affect the output voltage. For instance: Resistors, Transformer, Voltage regulators and others that can control the output voltage to a certain level.
Why is the peak amplitude of voltage load lower than the amplitude of voltage transformer?
Unless otherwise stated, the value of an a.c. current or voltage is expressed in r.m.s. (root mean square) values which, for a sinusoidal waveform, is 0.707 times their peak value. The output of a voltage (or potential) transformer is no different, its measured voltage will be its r.m.s value which is lower than its peak value.
What components are used to change an AC voltage to a lower or higher value?
Step up transformers are used to increase the voltage to a higher value
Why we use binary system?
Computer understands the changes in voltages. To be more precise, a higher voltage and a lower voltage determines the action the computer takes for an input. And to make it more simple for programmers, a higher voltage is given the value 1 and a lower voltage is assigned the value 0.
Why generated voltage is not directly given to households?
it has to go through a transformer to make it a lower voltage.Otherwise,it would fry your electricity sytem.
Maximum generating voltage in world?
maximum generated voltage is 21KV
How are lower voltages combined into higher voltages for transmission?
Low voltages are not 'combined into higher voltages' for transmission! The lower voltage (e.g. the voltage generated at a power station) is applied to the primary winding of a large power transformer, and the required higher transmission voltage then appears across the transformer's secondary winding. The magnitude of the secondary voltage is determined by the turns ratio of the transformer's windings.
Is tranformer used to increase or decrease AC voltage?
The function of any transformer is to change one AC voltage value to another AC voltage value. A step down transformer will transform a higher AC voltage to a lower AC voltage. A step up transformer will transform a lower AC voltage to a higher AC voltage. The transmission of electrical power uses both of these types of transformers. From the generation station the voltage is stepped up to a very high transmission voltage and at the end of the transmission line it is stepped down to a voltage that consumers can utilize.
Electrons flow from areas of higher to lower voltage or from areas of lower to higher voltage?
Electronsflow from areas of lower to higher voltage, while Current flow from areas higher to lower voltage.
When testing a power transformer with an ohmmeter which winding should have the largest ohmic value?
The higher-voltage winding has more turns (therefore its conductor will be longer) than the lower-voltage winding and, because it will carry less current, its conductors will have a lower cross-sectional area. Consequently, the higher-voltage winding will have a higher resistance than the lower-voltage winding.
What is the function of step-down transformers?
The function of any transformer is to change one AC voltage value to another AC voltage value. A step down transformer will transform a higher AC voltage to a lower AC voltage. A step up transformer will transform a lower AC voltage to a higher AC voltage. The transmission of electrical power uses both of these types of Transformers. From the generation station the voltage is stepped up to a very high transmission voltage and at the end of the transmission line it is stepped down to a voltage that consumers can utilize.
An electric current can be generated by moving a wire coil in a magnetic?
No, a voltage will be generated, not a current. Current will only flow if the induced voltage is connected to a load.
What size circuit breaker should be used if you use 5 horsepower of air-conditioning?
To answer this question a voltage value must be given. Circuit breakers protect the conductors that feed the load. The lower the voltage value, the higher the current value, hence a larger the wire size is needed and therefore larger the breaker size for the circuit. In reverse the higher the voltage value, the lower the current value, hence a smaller the wire size can be used therefore smaller the breaker size for the circuit.
