first calculate current from power and voltage.
then since wire comes in standard gauges with a maximum current rating for each just select the wire gauge from the table that can carry more current than the value calculated.
Conductors are sized in terms of their cross-sectional area, not 'thickness'. Theoretically, if you divide the power by the voltage, you'll be able to calculate the current. You can then look up an appropriate csa conductor in wire tables. Unfortunately, in practise, it's not as simple as that because cable sizes depend also upon their methods of insulation, the method of installation, whether they are subject to thermal insulation, etc. All these other factors have to be taken into account, too.
380V ÷ √3 = 219.4
Divide the watts by the voltage to get current (amps). 60W / 250V = about 1/4 Amp.
By Ohm's Law.... Voltage equals Current times Resistance (V=I*R) So if given the voltage and resistance of a system and applying algebra I=V/R .
The effect of diode voltage drop as the output voltage is that the input voltage will not be totally transferred to the output because power loss in the diode . The output voltage will then be given by: vout=(vin)-(the diode voltage drop).
formula are given at www.calculatoredge.com
the given kw Divide by the your voltage
380V ÷ √3 = 219.4
if an equation is given the correct answer, it is mathematically correct.
P = E * I Power (watts) equals voltage (E) times current (I)
Rated voltage is the voltage at primary side. Rated current can be found from the equation, Rated Current= Output KVA / Output rated voltage
P = I^2 R = IV = v^2 / R , Where P is power, I is current, R is resistance, and V is voltage. Given voltage and current, power = current * voltage, or P = IV.
You can't do that calculation given only that data. It depends more on the design of the LED than its drive levels.
This is a voltage drop question. To answer this type of question a circuit voltage and the circuit load amperage must be given to calculate an answer.
Divide the watts by the voltage to get current (amps). 60W / 250V = about 1/4 Amp.
For calculating the collapse pressure of a pipe, you first need to calculate the Hoop stress, which is given by :- Stress = Circumferencial Force/(radial thickness*axial length) If the stress crosses this value the pipe would collapse.
The input voltage (primary) and output (secondary) of a transformer is determined by the manufacturer. Transformers are bought to accommodate the voltage that is needed on the primary side and to what voltage is needed on the secondary side.
you need to know the desnsity of the material (grams per cubic centimeter or pounds per cubic inch). Then multiply density times area times thickness to get weight with proper units. Weight = density x volume