Question

The input torque on the shaft is 200 pound-feet and the output torque is 760 pound-feet. What’s the torque ratio? A. 3:1 B. 4:1 C. 3.8:1 D. 3.3:1

Answer 1

torque ratio is the ratio of its output torque to its input torque.
760/200=3.8
So the answer is C 3.8:1

Answer 2

Answer: C. $3.8:1$

Step-by-step explanation:

We know that the torque ratio is the ratio of its output torque to its input torque.

Given : Input torque : $\tau_i=200\text{ pound-feet}$

Output torque : $\tau_o=760\text{ pound-feet}$

Then , the torque ratio is given by :-

$\dfrac{{\tau_o}}{{\tau_i}}\\\\\\=\dfrac{760}{200}=\dfrac{3.8}{1}$

Therefore, the torque ratio = 3.8 :1