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Since the transmission line has some real impedence (resistance) it will produce some voltage drop over a distance. During the peak hours the current going through the line is greater than non peak hours so the voltage drop increases proportunately (V=IR) and so you see a slightly lower voltage. This effect is best seen in remote areas at the end of the transmission line.
For a more extreme version that involves insufficient generation capabilities see brown out.
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Why voltage of unit should match with grid when synchronising with grid?
If both the voltages do not match then there will be current fllow from higher voltage to low voltge, this is loss of power and can lead to even tripping of the system.
What is the frequency of the secondary of a 230 volt step down transformer?
The frequency is dependant upon what electrical grid that you are connecting the transformerto. If you are connected to a 50 Hz grid, the transformer will output a voltage at 50 Hz. The same thing with the 60 Hz grid, the transformer will output a voltage at 60 Hz.
What is the purpose of a transformerin a power grid system?
A transformer changes the electricity from one voltage to another, which allows a high voltage power line to be converted down to a voltage suitable for home usage.
What does a step up and a step down transformer do?
It raises the voltage of the output of the main generator to the level of the grid transmission lines. The actual values depend on the design of the plant and grid system. In the UK the generator output would typically be about 23 kV and the grid line at 400 kV. Very high voltages make transmission of power more economical because the current is correspondingly reduced.
The saturation condition of a triode occurs when the plate is at high voltage values and the grid with respect to the cathode is?
Highly positive
Why do wind turbines cause a voltage rise to the local grid?
They don't. The electricity they generate flows into the grid without any problems.
Why is voltage regulation important in alternator?
because the voltage should be constant as the full transmission grid need ame voltage for synchronization of alternatos of grid
What voltage is the grid in an insectocutor?
The voltage can be anywhere from 5000 to 7500 volts. That is why the bugs snap when they get between the two grid plates.
Would grid electricity be used at home?
Not at high voltage. The Grid Electricity Is divided at subtations to lower voltage for transfer to Houses
What is the voltage of French national grid?
The voltage of the French National Grid is 2000 mw high voltage. It is a direct current electrical interconnector between the British and French transmission.
The voltage present in a power grid line is more than?
The voltage present in a power grid line is more than enough to kill you.
Why does the Singapore Power Grid control engineer switch on the reactors in the evening?
Power Grid control engineers switch on the reactors in the evening because that is when the load demand decreases, also termed as off peak hours. When the demand is low, the power generated is less therefore the system voltage increases. To control the voltage within the operational range, reactors are switched on to absorb the excess voltage during off peak hours.
Vacuum tube grid current changes in?
In normal operation there is no grid current, only a voltage.
What are grid station?
Grid stations are the station which reduce the High Voltage to Low Voltage and increase the Current, the Current is Low and Voltage is High at the Generation Plant to reduce the energy losses during transmission of Electricity.
What is a definition of grid station?
it is a station which reduces high voltage to low voltage and increases current.
Why voltage of unit should match with grid when synchronising with grid?
If both the voltages do not match then there will be current fllow from higher voltage to low voltge, this is loss of power and can lead to even tripping of the system.
How triode valve can be used as an amplifier?
A 'Triode Valve' is a vacuum tube amplifier or switch of the simplest form. It has three parts: A heated cathode, a control grid and an collection plate anode.Electrons are emitted from the cathode and drawn towards the positive anode. Interposed between the two is a control grid that controls the cathode-to-anode electron flow by being charged appropriately, for example a negative charge (ground) on the grid will hamper the flow since the negative electron charge on the grid will obstruct the electron flow to the positive anode.OK, but the question was "use as an amplifier".In a triode, the anode current responds to the grid voltage, as explained above.Now, if a load (and the simplest load is a resistor) is placed between the anode terminal and the supply voltage, the anode current will create a voltage drop across the load resistor.If the anode current varies, so will the voltage across the anode load resistor.A varying grid voltage causes a varying anode current, so a varying grid voltage causes a varying voltage across the load resistor.Now, if one volt of grid voltage change only causes one volt of load resistor change voltage change, it's not much use.A triode can give a greater load voltage change than the grid voltage that caused it. This is amplification, where voltage out is more than voltage in.Typical voltage gains range from a low of just about 2.0 to high values over 70 times.
