HOCHIMINH UNIVERSITY OF INDUSTRY
UNIT 3
Lecturer: Lang Van Thang
ENGLISH FOR AUTOMOBILE
ENGINEERING
ROTARY SYSTEM
HOCHIMINH UNIVERSITY OF INDUSTRY
Presentation
Read the text and complete
HOCHIMINH UNIVERSITY OF INDUSTRY
Practice 1
a) D has a number of teeth F.
b) B has a diameter C.
d) has a faster speed F.
g) B has a greater number of teeth than A; the speed of
is therefore .
e) The speed of is slower than the speed of .
f) C has a smaller A, so A
has a speed.
greater
greater
faster
E
B
number of teeth than
B
Using Figure 3.2 to complete the text below:
c) F has a speed .
than
than
than
D
slower
than
C
Slower than A
HOCHIMINH UNIVERSITY OF INDUSTRY
Practice 2
a) The ratio of the number of teeth is the size ratio.
c) A:C and D:F are .
b) The two gear system in Figure 3.2 are .
d) The movement of A is the movement of B.
Choose a, b, c, d or e to complete the sentences. Use Figure
3.2 and Table 3.1 below:
e) The speed of B is the speed of A.
f) The direction of movement of D is the direction of
movement F.
b
e
c
a
d
b
HOCHIMINH UNIVERSITY OF INDUSTRY
Practice 3