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When voltage across a certain resistance is V the power delivered is P when the voltage is doubled to 2V what is the power?
First of all the power consumed is only dependent on the load (eg. any appliance) connected to the source. A load will always draw its rated power. If you have increased your voltage to twice then the current drawn by the device will become half but the power consumed will remain same.the power consumed is given by:P= V*I* cos(fi)here for a given load P(power), cos(fi) are constants.Then if V becomes 2V then current will be I/2.
Why is the electric watt meter connected in series with the rest of the circuits in the house?
First of all, you are referring to an energy meter, not a wattmeter. A wattmeter measures power, in watts, whereas an energy meter reads energy, in watt hours (or, more specifically, kilowatt hours). The energy company bills you for energy, not power.Having said that, the connections each instrument are the same. In fact, there are two coils inside an energy meter: a current coil, and a voltage (or potential) coil. The current coil is connected in series with the load while the voltage coil is connected in parallel with the supply voltage.The current coil measures the in-phase component of the current drawn by your load, so that the instrument always reads the true power (multiplied by time -the function of the aluminium disc) of the load -i.e. not the apparent power or reactive power.
What is the adjustment factor for a raceway or cable that has 7-9 current carrying conductors?
The adjustment factor for a raceway or cable with 7-9 current-carrying conductors is typically 70%. This means that the ampacity of each conductor must be reduced to 70% of its rated value to prevent overheating and ensure safe operation. This adjustment is necessary to account for the increased heat generated when multiple conductors are bundled together. Always refer to the National Electrical Code (NEC) for the most accurate and applicable guidelines.
Is it always better to take measurements with the most accurate instruments available?
Yes and NO, NO - there is no such this as 'The Most Accurate' because these machines holding the name are upgraded and fixed on a regular basis and all machines can go wrong. Yes - They are more detailed and will work better than older versions. e.g A earthquake predictor now shows tremor lines on paper, before that the Chinese has a statue with metal spheres in its mouth and was only good when there was an actual earthquake happening. I hope this answer has been of much use.
Is sizeof an operator or function why?
You cannot overload the sizeof() operator because that could introduce uncertainty in its evaluation. The sizeof() operator must always produce an accurate and logically predictable result, thus all user-intervention is completely forbidden.
Why you use low power factor wattmeter on primary and unity power factor on secondary side of transformer?
There is no such thing as a 'low power-factor' wattmeter. A wattmeter always reads true power, regardless of the load's power factor.
Why watt-meter is required to measure real power delivered to a purely resistive load?
A wattmeter (not 'watt-meter') will always measure the true power of a load, regardles of whether that load is purely resistive or not. This is because a wattmeter effectively measures the in-phase component of the load current.
Are hospital pregnancy test always accurate?
No , they are about 99% accurate :)
Is Answers.com always accurate?
no.
How may digits does a Flagstar bank account number have?
A Flagstar Bank account number typically has 10 digits. However, variations may exist based on the type of account or specific banking needs. It's always best to check directly with Flagstar Bank for the most accurate information regarding account numbers.
Why does cereal have more nutrition facts than everything else?
Because cereal is almost always consumed with milk. So, if the nutrition label takes milk into account, giving the nutritious facts both with milk and without it.
Is wiki answers accurate?
Always.
What is the charge for a returned dd with Halifax?
The charge for a returned direct debit with Halifax is typically £10. However, it's important to check your account terms or contact Halifax directly, as fees can vary based on account type and specific circumstances. Always review your statements and account documentation for the most accurate information.
What is effect of power factor on the readings of wattmeter?
If you are asking whether power-factor improvement has any effect on a wattmeter reading, then the answer is no, it doesn't. Improving the power factor of a load has absolutely no effect on the power of the load, but it can act to reduce the value of the load current.
Which first two digits does absa account bank has to begin with?
Absa bank account numbers in South Africa typically begin with the digits "63" or "76." These prefixes indicate the specific bank and are part of the overall account number structure used by Absa. Always verify with the bank for the most accurate and updated information.
Why are forecasts not always accurate?
no one knows but them :)
Is eia always accurate?
according to WIKI, no
