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BF =( Tdb,out - Tcoil )/(Tdb,in - Tcoil)
Source: MERM for the PE Exam - Michael Lindeburg, PE
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∙ 13y ago
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Why electrical supply are multiple of 11kv?
It is due to presence of form factor(Kf) in the emf equation of Alternators and transformers. Value of form factor is 1.11.
What is the formula to calculate ac current in single phase 240volts?
The formula is: current (in amps) = power (in watts) , divided by (240 times the power factor). The power factor is 1 for incandescent light or heaters, otherwise it can be assumed to be 0.75 for other loads.
Power factor formula?
Power factor is defined as the ratio of real power over total power. Total power is the vector sum of real and reactive power.
What is the Formula to calculate KVAR?
{| |- | capacitance of the capacitor is mentioned in KVAR. Formula : KVAR = KW*tan@ FOR tan@, First note the power factor & KW without connecting capacitor. The noted power factor is in cos@.Convert the cos@ value in tan@. for ex. If power factor is 0.6, KW = 200 cos@ = 0.6 cos-1 (0.6) = 53.1 tan (53.1) = 1.333 200*1.333 = 266.6 KVAR if you use 266 KVAR capacitor, Then the power factor improves to unity (1.000). |}
Is watt divided by ohm the formula to find amps?
Yes, sort of. At least for DC, that's correct, since P = I x V (power = current x voltage). In the case of AC, the correct formula is: P = I x V x (power factor) In many practical situations, the power factor is close to 1, and can therefore be ignored.
How do you factor x2-4x-80 equals 0?
Use the quadratic equation formula to find the solutions to this equation.
How do you solve a quadratic equation that will not factor?
How you solve an equation that doesn't factor is to plug a quadratic equation's format; ax2+bx+c into the quadratic formula which is x=-b+square root to (b2-4ac)/2a.
How do you factor -5b2 plus 7b-2?
It is: (-5b+2)(b-1) with the help of the quadratic equation formula
How do you factor xsquared plus 50x-484?
It is: (x+58.301651611)(x-8.301651611) with the help of the quadratic equation formula
How do you factor out 2x2-127x-4896 equals 0?
Using the quadratic equation formula the solutions are:- x = -27.0382854 and x = 90.5382854
What is bypass factor in air conditioning?
Bypass factor is the percentage of air that travels through a tube and fin coil without touching any coil surface.
How do i factor the expression y2 plus 6y-16?
It is: (y+8)(y-2) and knowing how to use the quadratic equation formula does help.
How do you factor x2 plus 3x-5?
x2+3x-5 = (x+4.192582404)(x-1.192582404) factored with the help of the quadratic equation formula
How do you factor 9x2 plus 11x-14?
9x2+11x-14 = (9x-7)(x+2) when factored with the help of the quadratic equation formula.
How would you factor an equation that doesn't factor properly?
If it does not factor properly then you cannot factor it.
How do you factor the trinomial completely 30x2-23x-14?
30x2-23x-14 = (6x-7)(5x+2) when factored with the help of the quadratic equation formula
2x square plus 11x plus 5 equals?
The given expression is a quadratic equation. To find its solutions, we can either factor the equation or use the quadratic formula. However, without an equation to solve or any context, it is not possible to provide a numeric answer.
