What will happen if a phase and neutral test by a mutimeter shows continuity?
If the test shows that there is a continuity between the phase leg and the neutral with no load connected, then that circuit should not be energized. If the circuit was energized then the fuse or breaker protecting that leg will trip the circuit open.
How do you check remnant voltage?
To check remnant voltage, first ensure that the power supply is turned off and isolate the circuit to prevent any hazards. Use a multimeter set to the appropriate voltage range and connect the probes across the component or circuit where you want to measure the remnant voltage. The reading on the multimeter will indicate the remnant voltage present. Make sure to observe safety precautions and follow proper procedures when working with electrical systems.
You have 3 sets of conduits with 6 500MCM conductors in each one what is your ampacity?
The ampacity of 500 MCM R 90 degree wire is 395 amps. Don't forget to de-rate the wire as there are more that three conductors in a raceway.
Calculate the current in a 40 V battery that powers a pair of 30 resistors connected in series?
The two resistors in series have an effective resistance given by the formula
Reff = R1 + R2
therefore
Reff = 30 + 30 = 60 ohms
V = IReff
I = 40/60 = 2/3 (or 0.67) A
A measure of a solid's resistance to scratching is?
i dont know but it has 10 letters :) im doing a crossword for science and they asked that question but I cant figure it out
this is halohayd the answer is hardness
How do you calculate ah of battery?
You could put a know resistive load on the battery and then monitor the voltage across the load until the battery was at zero volts. Using Ohm's Law you can calculate the current at any time. Current = Voltage / Resistance. You can multiply the average current times the number of hours for the battery to go to zero.
No-load loss is the amount of power (watts) used by a device such as a transformer or electric motor when it is connected to the power line but is not delivering any useful output. For example, if your doorbell is run from a transformer, it may consume, say, 3 watts continuously. This ends up as heat due to the heating of its windings, and the energy needed to magnetise the iron core. When someone presses the doorbell, it may draw 6 watts, 3 of them going to the bell to make it ring.
Another example is an electric motor which is going round, but not driving anything. It may consume 100 watts, but its efficiency is zero. When it is driving, say, a machine tool it may consume 1000 watts, 900 of them being useful work in driving the machine.
110 or 220 for home service. Businesses may require 440 volts.
I will rephase your question as "What is a finite Markov chain processes?" If this is not your question, please resubmit it. As I researched this question, I found an interesting information on the Markov's, as his brother and brother's son contributed to mathematics. See: http://en.wikipedia.org/wiki/Andrey_Markov How much of Markov chain theory actually orginated with Andrey or future generations of Markov's and others is a good question. Commonly, mathematicians name their theories to other famous mathematicians, for example, Bayes, Gauss & Bernoulli. A Markov chain is a hypothetical process that has finite and identifiable states. The system changes in discrete steps, and only the current state will have an affect of the future state. I will use a concrete example of this. I'm hungry and standing in line at McDonalds. Suppose there are a finite number of choices, say 1- 12 (yes I know this is not true, but just suppose it, ok). Now suppose that my choice is not completely random, but is affected by what the person ahead of me is choosing. If the person ahead of me chooses a number 1, I will have have a higher chance of choosing a number 1 (say for example 50%) and a lower chance of choosing all other options. I could run a simulation model where thousands of customers are served and find out what are the probabilities of number 1 to 13 being served. The state of the system is determined by the selections of the customer defined by an unchanging set of rules governing the probability. In a more general sense, we could have a fix set of rules (conditional probabilities), that state given what the last customer ordered, will determine the probabilities of the next customer. This is called a transition matrix of probabilities. You can find more examples at: http://en.wikipedia.org/wiki/Examples_of_Markov_chains which cites the board game of monopoly as an example of Markov chain, because given the square that you are currently on, will determine the probabilities of the "future state" or the next square on which you will land.
For capacitive reactance, current leads voltage. In an "ideal" circut, the leading phase angle would be 90 degrees, but this does not happen in practice due to resistance.
For inductive reactance, current lags voltage. In an "ideal" circut, the lagging phase angle would be 90 degrees, but this does not happen in practice due to resistance.
What cell that decreases in resistance with a decrease in illumination?
A photo resistor decreases in resistance as illumination increases. I don't believe there are any discrete components that accomplish what you are asking. You may need to use a photo resistor, combined with a transistor to invert this operation.
What are the Tests conducted for HT and LT panel?
Normally as per IS 8623 There are 3 Test conducted in Type Testing Lab i.e,CPRI Bhopal and Bangalore,ERDA in vadodara. That are short circuit withstand test,Ingress protection Test and Heat Run test or Temperature rise test.
regards
Ramesh 09323586413
What is the formula of ampere?
The formula for amperage is:
I = V / R
I = amperage, V = voltage, and R = resistance.
Also amperage can be found by using the following formulas.
I = P / V, Amps = Watts/Volts
I = sq root P/R, Amps = the square root of (power divided by resistance) watts/ohms.
Why is the amperage in single phase double than of 3 phase?
If I have 1 KW In 3 Phase it will give 1.54 A and In single phase it will give 4.6 A
For cosF 0.9
V 415 3 ph
V 240 1 ph
It seems the reason is because the current is carried on more wires. Also, remember that if wattage stays constant, then as voltage increases, current decreases.
AnswerIt really depends on the load. Are you assumining the three-phase load to be the same as the single-phase load or, as it is likely to be in practice, three times the value of the single-phase load?
But, in either case, the single-phase current will not be double the the three-phase (line) current!
The equation for the load current supplying a single-phase is: I = P / (E x power factor)
The equation for the line current supplying a balanced three-phase system is: IL = P / (1.732 x E x power factor)
If you insert real figures into these equations, (240 V for the single-phase voltage and 415 V for the three-phase line voltage) then you will find that, when the three-phase load is threetimes that of the single-phase load, the supply currents will be exactly the same. On the other hand, if you assume that the three-phase load is exactly the same as the single-phase load, then you will find that the three-phase line current will be one-third that of the single-phase current.
How much is the resistance of 600w and 120 tester?
To find the resistance of a device rated at 600 watts (W) and 120 volts (V), you can use Ohm's Law, which states that power (P) equals voltage (V) squared divided by resistance (R): ( P = \frac{V^2}{R} ). Rearranging gives us ( R = \frac{V^2}{P} ). Plugging in the values, ( R = \frac{120^2}{600} = \frac{14400}{600} = 24 ) ohms. Thus, the resistance is 24 ohms.
What is z bus of power system?
Z bus is using in fault analysis of power system..it represents how much impedance the network offers to the fault current.lower the impedence larger the fault current
What is the Phase to phase voltage of 66KV earthed cable?
Nominal transmission and distribution voltages are line voltages. So '66 kV' is a line-to-line voltage. Note that there is no such thing as a 'phase-to-phase' voltage -the correct term is 'line-to-line'. Using the term, 'phase-to-phase', indicates a lack of understanding of a.c., which is not uncommon! Incidentally, the symbol is 'kV', not 'KV'.
What does ONAF mean in reference to to the way transformer is cooled?
These terms essentially refer to the cooling functions used for a power transformer.
ONAN mean "Oil Natural Air Natural", while ONAF means "Oil Natural Air Forced" (use of fans to cool radiators)
How is it possible to measure negative current?
The term, 'negative current' simply refers to the sense or direction of a current compared with an assumed, standard, direction. For example, in the case of a battery, we normally assume that current leaves its positive terminal and enters its negative terminal (assuming conventional flow), and this is considered its 'positive direction'. However, if that battery were to be connected to a battery charger, the actual current would flow in the opposite sense to the assumed current direction and, so, it would be considered to be a 'negative' current.
So, the simple answer is, yes, we can measure a 'negative current' by using an ammeter. In the case of d.c., it may be necessary to reverse the connections to that ammeter to ensure that it reads upscale.
Phase exit refers to the process of transitioning from one phase of a project or program to another, typically signifying the completion of a specific set of objectives or milestones. This transition often involves an evaluation of deliverables, performance metrics, and stakeholder feedback to ensure readiness for the next phase. It is commonly used in project management and development methodologies to ensure that projects progress systematically and meet established criteria before moving forward. Effective phase exit helps in minimizing risks and ensuring alignment with overall project goals.
Load effective address, in assembler terms, and in the case of for example "lea eax, [esp-8]" means "please compute and put the address of [esp-8] into the register eax".
In other terms, "mov" works only on values, except you tell it to get the address of your source arg (you could do mov eax, offset [ebp-8]), while "lea" works on addresses only.