Three-phase full-load amp= hp x .746 / 1.73 x kV x effi ciency x power factor. Branch current analysis is a method used for calculating current in each branch. Log in, https://www.youtube.com/watch?v=T9nWZg6Hxic, Motor synchronous speed in rpm = 120 x Hz / number of poles, Three-phase full-load amp= hp x .746 / 1.73 x kV x effi ciency x power factor, Rated motor kVA = hp (.746) / efficiency x power factor, kW loss = hp (.746) (1.0 – effi ciency) / efficiency, kVA in-rush = percent in-rush x rated kVA, Approximate voltage drop (%) = motor kVA in-rush x transformer impedance / transformer kVA, Stored kinetic energy in kW-sec = 2.31 x (total Wk2) x rpm2 x 107, Inertia constant (H) in seconds = stored kinetic energy in kW-seconds / hp (.746), Conversion factors: CV = (metric hp) = 735.5 watts = 75 kg-m/sec Wk2 (lb-ft) = 5.93 x GD2 (kg-m2), Ventilating-air requirements: 100-125 cfm of 400C air at 1/2-in. Calculate the amount of charge flowing through the lamp.
water pressure for each kW of loss. Ohm's law equation (formula): V = I × R and the power law equation (formula): P = I × V. P = power, I or J = Latin: influare, international ampere, or intensity and R = resistance. I = 3.1428 A. Formulas, Tables and Basic Circuits LED CURRENT LED VOLTAGE DROP Forrest M. Mims 111 . The formula sheet contains different formulas on 13 DC and AC topics and is important for all Engineering students who are doing their engineering, and for those who are appearing in various competitive tests. The branch current analysis uses the combination of Kirc... Current, Voltage, Resistance, and Power are the four basic properties of electrical circuits. Torque in lb-ft = hp x 5250 / rpm. Electrical Engineering involves the study of physical c... Electrical power exists in two forms, the AC, and the DC in this section, you'll learn the basics of both. The mountain analogy in this article will hel... Electrical symbols are simplified and clean representation of circuit components. In these calculations:V = voltage (in volts)I = current (in amps)R = resistance (in ohms)P = power (in watts) Another way to prevent getting this page in the future is to use Privacy Pass. Thanks for the post. It is defined as the average of all loads that occur on a power station for a given period of time. kW loss = hp (.746) (1.0 – effi ciency) / efficiency. Solution: Current I = 0.5 A. heat exchanger.
I’ll definitely return. All Electrical Engineering Formulas List Cable Length from Sag, Span. Solenoid Coil Electromagnetic Force. Example 2.
V = voltage, electric potential difference Δ V or E = electromotive force (emf = voltage).
Overall Efficiency: η = Output mechanical Power / Input electrical Power. Motor synchronous speed in rpm = 120 x Hz / number of poles. Completing the CAPTCHA proves you are a human and gives you temporary access to the web property. Mechanical Efficiency: η m = Converted power in armature / output mechanical power. Q= 7200 C Let’s look at the most basic electrical formula: V=IR Fundamentally, what the “=” sign means is that whatever is on the left of the sign is equivalent to whatever is on the right.
Rated motor kVA = hp (.746) / efficiency x power factor. Top 100 Basic Electrical Engineering Formulas, Current Divider Rule [Statement, Formula, Examples, and Derivation], Relationship between Resistance and Temperature, Volage Divider Rule [Statment, Formula & Examples], Basic Properties of Electrical Circuits: Voltage, Current, Resistance, Power [The Mountain Analogy], Basics of Electrical Symbols and Why we need them, Basic formula for Efficiency and How Efficiency is Solved in Cascaded circuits, Linear equations [2 Equations, 2 Variables], Linear equations [3 Equations, 3 Variables].
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