Reference Guide

5-18 Equation Reference
Sinusoidal Voltage (2, 22)
Equations:
Example:
Given: Vmax=110_V, t=30_µs, f=60_Hz, φ =15_°.
Solution: ω =376.9911_r/s, V=29.6699_V.
Sinusoidal Current (2, 23)
Equations:
Example:
Given: t=32_s, Imax=10_A, ω =636_r/s, φ =30_°.
Solution: I=9.5983_A, f=101.2225_Hz.
Fluids (3)
Variable
Description
∈
Roughness
µ
Dynamic viscosity
ρ
Density
∆P
Pressure change
∆y
Height change
ΣK
Total fitting coefficients
A
Cross-sectional area
A1,A2
Initial and final cross-sectional areas
D
Diameter
D1, D2
Initial and final diameters
h
Depth relative to P0 reference depth
hL
Head loss
L
Length
M
Mass flow rate
n
Kinematic viscosity
P
Pressure at h
P0
Reference pressure
P1, P2
Initial and final pressures
Q
Volume flow rate
V
V
m
a
x
S
I
N
ω
t
⋅
φ
+
( )
⋅
=
ω
2
π
f
⋅
⋅
=
I
I
m
a
x
S
I
N
ω
t
⋅
φ
+
(
)
⋅
=
ω
2
π
f
⋅
⋅
=