Question

How many revolutions will each spindle of cotton picker make in the picking zone for a chain belt arrangement in which the speed of spindle is 1400 rpm and remains in the picking zone during 100 cm of forward travel.

(a) 50

(b) 21

(c) 45

(d) 11

The question was posed to me during an interview for a job.

My enquiry is from Harvesting Equipments topic in portion Harvesting Equipments of Farm Machinery

Answer 1

Correct option is (b) 21

For explanation: Time required to move 100 cm = \(\frac{100*60}{4.5*10^3*100}\) = 0.015 m

Number of revolutions in 0.015 min duration = 1400*0.015 = 21 revolutions.