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23
C.
ENGINEERING CALCULATIONS
Ex. Calculate
sum
of
two
vectors
"
,
!
,
, ,
,
I
, ,
),,
=
15, Y.=
5
,
«
= 60'
r=Jr!+ r:+
2
'
r,
'Yreosa
8=T
an-
'
~
Y,
'sin a
:J
'Y,
'cosa
+Y,1
Db@] 15~~ 5~0 20
1
5~
5~ 60~
El0@]I!EI(r)
rl
'~
1
7
'
,~ 02~
71
~
56
~~
@]
150 60~[!]@]
15@
60[!)El S[ill
El
l!!!l~
(8
)
-I
46.
102111
Ex. Calculate
th
e field
stre:'lgth
I
t inner
surface
x
in
the
conce
ntric
cylinder
w ith
o
uter
raatus Ra
nd
imll:'
radius
r in
condit ion
of 1.000
V
between
both sidcs.
E
U
X
Ln(
~
)
1000
25Ln{
~
)
20
X=
25, R= 30,
r
=
20
@]
IOOOEJlliJ25@lliI30E}20G!J0GDEJ
- I
98.
652145
Ex.
Calculate
the current
I.
E"'vol tage
100( V)
R"'net
registance
l
'i :O)
r
"'frequency
50(1
11:
\
L"' inductance
O.01(
H)
"
"
e
lectric
current?
( A)
E
1
=
/
R'+{ 2I1'fL)'
/
15'+(211" X50
XO
.
01
)'
100
@]
100
EllliJ
15~EllliJ2
0~0 500
[Jo1@]ia@J@El-
r l
-:C
6
,-;-
52
" '
5"' 09"'
17
c-,
Ex.
Calculate th
e
period
of
conical
pendulum
T
=
2
1r
jg.
co;(f J
12
)
T
:
Period
g
:
thread
length
8 :
llIlx
imum
angl
e
('
)
30(cm
)
90'
g
:
gravi
tationa
l
acceleration
(9.
8m
/s')
@)@~~@)[J 31EJ:ill
90
[+]
2@l!!lEJ9[J'
@)@El-
Cloo".
9 "",,""2
"
'05
; - '
24
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