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What else can I help you with?
Can voltage increase or decrease in a system during a day?
Power supply voltages vary with the amount of load placed on them. In many countries the supply voltage has a nominal voltage and a plus or minus tolerance. In the UK the nominal voltage is 230 v but the allowable variation is -6% +10%, in other words 216-253. At my house the voltage is usually between about 236 and 253 volts.
What is the phase relationship of voltage across a capacitor and current though the capacitor?
In a capacitor, the current LEADS the voltage by 90 degrees, or to put it the other way, the voltage LAGS the current by 90 degrees. This is because the current in a capacitor depends on the RATE OF CHANGE in voltage across it, and the greatest rate of change is when the voltage is passing through zero (the sine-wave is at its steepest). So current will peak when the voltage is zero, and will be zero when the rate of change of voltage is zero - at the peak of the voltage waveform, when the waveform has stopped rising, and is about to start falling towards zero.
Are 250 voltage reading considered to be nominal 240 volts?
Different countries have different legal limits to how much their electricity supply voltages may vary. In the UK, for example, the nominal supply voltage for residential supplies is 230 V, but this is allowed to vary between -6% and +10%. So, as you can see, and 'actual' voltage of 250 V is within the allowable upper limit (253 V) for the nominal voltage of 230 V. So, to answer your question, you need to check what the allowable variation is at your location (your electricity supplier can confirm this) -I would guess that 250 V would be well within the allowance for 240 V.
The phase angle between voltage and current in an a c circuit through a pure capacitance is?
90 degrees. In an AC circuit with a pure capacitance, the current leads the voltage by 90 degrees. This is because the current in a capacitor is proportional to the rate of change of voltage across it, leading to this phase relationship.
What is minimum ac voltage for home use?
The standard minimum AC voltage for home use is typically 110 volts in North America and 220-240 volts in Europe and other parts of the world. It is important to note that these voltages can vary slightly depending on the country and electrical standards in place.
How do you determine the minimum allowable voltage between line and neutral?
The voltage between line and neutral is determined by the regulations in your country. This is specified as a nominal (named) voltage, together with its allowable variation expressed as a percentage of that nominal value. In the UK, for example, this is 230 V (+10%/-6%).
What is the allowable voltage level for a hand held lamp?
220V
What is considered to be the maximum allowable supply voltage variation?
+or- 5%
What is the difference between voltage and Celsius?
Voltage measures electrical tension, Celsius measures temperature.
What is the normal allowable source voltage deviation from the motors nameplate voltage rating?
It can be 10% min and 5% max.AnswerA nameplate voltage is a 'nominal voltage', and manufacturers normally design their products for the allowable variation in nominal voltage of the country in which they are to be marketed. So, for those products intended for, say, the British market, manufacturers would take into account the British allowable variation, which is 230 V (+10%/-6%). And, no doubt, most manufacturers would widen this variation to allow a 'factor of safety' for their products.
What is the instantaneous voltage at 180 degrees for peak voltage of 150 volts?
Zero. If voltage starts at zero at zero degrees, it rises to peak voltage at 90 degrees. Voltage then reaches zero at 180 degrees and heads for negative peak voltage at 270 degrees and then back to zero at 360 degrees.
What is the exciter voltage needs to test the generator?
Because the voltage is fixed (within allowable limits) whereas the current varies according to load.
What is mean by thresold voltage?
the device oprates on the minimum voltage. in this voltage is called threshold voltage.
Break down voltage?
The breakdown voltage of an insulator is the minimum voltage that makes it partially conductive electrically. On the other hand, the breakdown voltage in a diode refers to the minimum reverse voltage to cause it to conduct in reverse.
What size in mm of cable on 160amp for 180meter length?
The answer is different depending on the supply voltage because the allowable volt drop is a percentage of the supply voltage.
What is the allowable voltage drop for a branch ct?
The voltage drop in any branch (closed loop) of a series parallel circuit is equal to the APPLIED VOLTAGE(NOVANET) Without looking in my codebook, I believe it is 2% on a branch circuit.
How many degrees are the current and voltage out of phase in a pure capacitive circuit?
In a pure (ideal) capacitive circuit, current leads voltage by 90 degrees.
