QUESTION 3
If the input speed for a 3V Belt system is 870 RPM and the output speed is required to be 400 ± 20 RPM, which
pair of input-output sheaves could achieve this requirement ?
Input sheave diameter=4.95 in and output sheave diameter = 10.55 in
Input sheave diameter= 5.25 in and output sheave diameter = 10.55 in
Input sheave diameter= 6.85 in and output sheave diameter = 13.95 in
Input sheave diameter= 7.95 in and output sheave diameter = 18.95 in
QUESTION 4
For a 3V Belt-sheave system, the input sheave standard diameter is 5.95 inches and installed on a motor shaft
which transmits a velocity ratio of VR=1.33 ± 0.10 to the output shaft. Which one of the following can be selected
as the standard sheave size for output sheave?
None of the above
7.95 in
10.55 in
6.45 in
QUESTION 5
Number of teeth on a single strand input roller chain is 26. The chain is No:60 with a pitch of 0.75. The small
sprocket rotates at 800 RPM What is the HP rating for this chain drive ?
25
15
20
30