Page 17 - CITS - WCS - Mechanical

3 − 4 6 − 8
60
WORKSHOP CALCULATION - CITS Rs.30
=
3 −
4
8
6 −
=
=
= 4 8 60 2
4 8 = = Rs.30
2
3 + 6 9 3
3 + 6 9 3 = =
Fig 1 = 4 + 8 12 4 50 Fig 2
=
4 + 8 12 4 50 x = × 30 = 10teeth
180
x = × 30 = 10teeth
180
1
1 x = 70 × 2.5 = 25days
20 70 × 2.5 7
20 x = = 25days
7
1 Δh = 1
1 800 × = 40mm Δh = 1 l 20
20
800 × = 40mm l 20
20
1
1 1400 × = 70mm
1400 × = 70mm
Find the ratio of A:B:C
20
20
If A:B= 2:3 and B:C=4:5
400 T
400 T =
= 300 24
300 24
24 × 400
\
24 × T = = 32Teeth
400
32Teeth
T = = 300
300
A:B = 2:3
120
30gallons/

120 B:C 4 == 4:5 day
A:B
4 = 30gallons/ day 8 :12 (Ratio 2:3 multiply by 4)
=
B:C = 12:15 (Ratio 4:5 multiply by 3)
\ A:B:C = 8:12:151
Assignment 3 − 4 6 − 8 60
4 = 8 = = Rs.30
2
l1 : l2 = 2:3

1 L = 2.75 metres 3 3 + 6 = 9 = 3 D : L=1:10

50
12
4
8
4 +
l1 = ______ metres L=150mm 10teeth
×
x =
30 =
D=______ mm
l2 = ______ metres 180
1 70 × 2.5
20 x = = 25days
7
1 Δh 1
2 d: L of shaft = 2:7 800 × = 40mm l = 20
d = 40 mm 20
L = ______ mm 4 1 I = 140 mm
1400 × = 70mm
20

400 T
=
300 24

24 × 400
4 T = = 32Teeth
300
CITS : WCS - Mechanical - Exercise 2
120
= 30gallons/ day
4