Correct Answer - Option 2 : 30 Nm
Concept:
The relation between torque transmitted by pinion and number of teeth is given as,
Torque ∝ Number of teeth i.e. \(\frac{T_p}{T_g}=\frac{t_p}{t_g}\)
Calculation:
Given:
Tp = 20 Nm, tp = 40, tg = 60
Therefore, \(\frac{20}{T_g}=\frac{40}{60}\)
Tg = 30 Nm