Maharashtra Forest Services 2008 Agriculture Engg Paper

Q1.

(a) 1. A four cylinder gas engine has a cylinder 25 cms diameter, 50 cms stroke and runs at 154 revolutions per minute. If the engine fires once per two revolution and shows an indicated mean effective pressure of 7.5 kg/cm^2, calculate : IHP
(i) BHP
(ii) BMEP
(iii) Stroke bore ratio
(iv) Assume the mechanical efficiency of the engine is 84.4%.

(b) Determine the runoff from a catchment area of 100 ha for years return period during which the maximum rainfall was recorded as cm in 6 hr rainfall duration.
The catchment area has two parts in which one of 25 ha is under fair pasture and the balance is under good legumes.
The soil of catchment is related to group B. The initial abstraction of catchment is rated as Ia = 0.3 S. The value of CN for soil group B for fair pasture cover is 60 and the balance area under good legumes is 69.

(c) Explain about two ground water recharge methods.
(i) Explain about two ground water exploration techniques.
(ii) P.T.O.

Q1. ٧, ٧ DNS 2 Explain the following : (d) 3
(i) HTST pasteurizer. 3 UHT pasteurizer.
(ii) Evaporation in Refrigeration. 4
(iii) Explain about USLE and its use. (e)
(i) 5 Explain about curve number method of runoff computation.
(ii) 5 SECTION - A Write about scope of mechanization in India. 5

Q2. (a) 2.
(i) Describe two primary tillage equipments used to prepare seed bed for growing crops.
(ii) Explain about mould board plough.
(iii)

(a) 2.
(i) Describe two primary tillage equipments used to prepare seed bed for growing crops.
(ii) Explain about mould board plough.
(iii)

(b) (i) Explain about valve operation and Reconditioning in tractor valve mechanism. Describe the cooling system of Tractor Engine.
(ii)

(c) Write about Wind Energy for electricity production in windmills.
(i) Explain about batch type solar drier for vegetable crops like chilly.
(ii) Write about two Biofuel crops for energy production.
(iii) (a)

• (a) 2.
• (b) (i) Explain about valve operation and Reconditioning in tractor valve mechanism. Describe the cooling system of Tractor Engine.
• (c) Write about Wind Energy for electricity production in windmills.

Q2. (a) 2.
(i) Describe two primary tillage equipments used to prepare seed bed for growing crops.
(ii) Explain about mould board plough.
(iii)

(a) (i) Describe two primary tillage equipments used to prepare seed bed for
(ii) growing crops.

(b) Explain about mould board plough.
(iii)
(i) Explain about valve operation and Reconditioning in tractor valve mechanism. Describe the cooling system of Tractor Engine.
(ii)

(c) Write about Wind Energy for electricity production in windmills.
(i) (i) Describe batch type solar drier for vegetable crops like chilly. 5 Write about two Biofuel crops for energy production.
(iii) (a) 5
3. Describe two attachments of mould board plough.
(i) (ii) Write about sugarcane combine harvester. Write about cotton mechanical plugger.
(iii) (b)
(i) Write about three point linkage in Tractor. Describe the lubrication system of crank shaft and crank case.
(ii) (c) Describe floating type Biogas plant.
(i) (ii) Write about solar water heater. Agricultural residue waste as a fuel - comment.
(iii) \epsilon

• (a) 2.
• (b) (i) Explain about valve operation and Reconditioning in tractor valve mechanism. Describe the cooling system of Tractor Engine.
• (c) Write about Wind Energy for electricity production in windmills.

Q3. 3. Describe two attachments of mould board plough.
(i)
(ii) 5 Write about sugarcane combine harvester. Write about cotton mechanical plugger.
(iii) (b)
(i) Write about three point linkage in Tractor.
Describe the lubrication system of crank shaft and crank case.
(ii)
(c) Describe floating type Biogas plant.
(i) 5
(ii) Write about solar water heater. Agricultural residue waste as a fuel - comment.
(iii) ε