Automobile Engineering MCQs

141. A petrol engine of a car develops 125 N-m torque at 2700 r.p.m. The car is driven in second gear having gear ratio of 1.75. The final drive ratio is 4.11. If the overall transmission efficiency is 90%, then the torque available at the driving wheels is

by
8.091 N-m
80.91 N-m
809.1 N-m
8091 N-m
✅ The correct answer is option C.

144. A worm gear is used as the pinion for the rack and pinion type of steering gearbox, because it

by
improves steering comfort when steering wheel is turned to effect small changes in the direction of forward motion
allows the steering wheel to be turned by a greater amount when steering
makes the steering more responsive
reduces the amount of
✅ The correct answer is option A.