Question

What percentage of manganese are present in the share of a mouldboard?

(a) 0.50%-0.80%

(b) 0.90%-1%

(c) 0.20%-0.40%

(d) 0.10%-0.30%

I have been asked this question by my college professor while I was bunking the class.

This intriguing question comes from Tillage in chapter Tillage, Disc Plough & Numericals of Farm Machinery

Answer 1

Correct choice is (a) 0.50%-0.80%

Best explanation: The share is made of chilled cast iron or steel. The steel mainly consists about 0.50%-0.80% of manganese besides other minor elements.