HP 48GII

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
∈
Rou
g
hness
µ
D
y
namic viscosit
y
ρ
Densit
y
∆P
Pressure chan
g
e
∆y
Hei
g
ht chan
g
e
ΣK
Total fittin
g
coefficients
A
Cross-sectional area
A1,A2
Initial and final cross-sectional areas
D
Diamete
r
D1, D2
Initial and final diameters
h
De
p
th relative to P0 reference de
p
th
hL
Head loss
L
Len
g
th
M
Mass flow rate
n
Kinematic viscosit
y
P
Pressure at h
P0
Reference pressure
P1, P2
Initial and final pressures
V V m ax 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
⋅ ⋅
=