Question

The input torque on the shaft is 5 pound-feet and the output torque is 10 pound-feet. What’s the torque ratio? A. 4:1 B. 1:1 C. 3:1 D. 2:1

Answer 1

Answer: D. 2:1

Explanation:

The torque ratio expresses the ratio of the output torque to the input torque.

Given : Input torque= 5 pound - feet

Output torque : 10 pound-feet

Torque ratio is given by :- $\frac{\text {output torque}}{\text {input torque}}$

Putting in the values we get:

Torque ratio= $\frac{10}{5}=\frac{2}{1}$

Thus the torque ratio is 2: 1

Answer 2

The answer is D. 2:1 since the input force is half the output force that corresponds to a 2:1 ratio of input to output.