+1 vote
in Farm Machinery by (38.9k points)
A disc type mower is operated by PTO with 6 discs with a shaft of 0.4 m/disc. The specific energy required for cutting is 2.1 KJ/m^2 and specific power losses due to air come stubble and gear train friction is 2 kw/m of cutting width. If the mower with tractor requires a propelling force of 2 KN the total power requirement for carrying out moving in Kw at forward speed of 3 km/h is ____

(a) 10.67

(b) 20.67

(c) 30.67

(d) 40.67

I have been asked this question during an internship interview.

My doubt is from Harvesting Equipments topic in section Harvesting Equipments of Farm Machinery

1 Answer

+2 votes
by (243k points)
selected by
Best answer
Correct option is (a) 10.67

Explanation: Pcutting = 2.1*2.4*\(\frac{3*1000}{3600}\) = 4.2 KW

Ppropelling = \(\frac{2*1000*3*1000}{3600}\) = 1.67 KW

Ptotal = 4.8+4.2+1.67 = 10.67 KW.

Related questions

We welcome you to Carrieradda QnA with open heart. Our small community of enthusiastic learners are very helpful and supportive. Here on this platform you can ask questions and receive answers from other members of the community. We also monitor posted questions and answers periodically to maintain the quality and integrity of the platform. Hope you will join our beautiful community