JNTU B.Tech II FARM MACHINERY AND EQUIPMENTS-I Previous Question Paper (May - 2019 - R13)

Write the benefits of Farm Mechanization.

A plough covers 1.2 m swath width at 3.5 kmph forward speed. Find the theoretical and effective field capacities if plough operates at field efficiency of 60%.

Define Disc angle and Tilt angle.

Write in briefly about types of shares.

Define Bank Measure Volume and Loose Measure Volume.

If earth is placed in a fill at the rate of 145 m3 per hour, compacted measure at 10 percent moisture content and the dry weight of the compacted earth is 1715 kg/m3, how many liters of water must be supplied each hour to increase the moisture content of the earth from 4 to 10 percent by weight.

Write the functions of seed drill.

Calculate the cost of seeding one hectare of land with bullock-drawn seed drill of 5×22 cm size. The speed of bullocks is 3 km/hr. Hire charge of bullocks Rs. 100/- per pair, hire charges of seed drill Rs. 50/- per day and wage of operator Rs.100/- per day of 8 hours.

Write the differences between sprayer and duster.

Write about different ways of expressing particle size of spray discharge.

Define draft, side draft, drawbar power, field efficiency, actual and theoretical field capacity.

A three bottom 40 cm M.B. plough has a working depth of 15 cm. draft is 1200 kg. field efficiency is 80%, and working speed is 4 km/h. Find (i) Unit draft (ii) Power requirement and (iii) Actual field capacity.

Explain about various methods for cost estimation of field operation.

A three bottom 40 cm trailed type MB plough costs Rs.10,000/- and a two bottom, 40 cm trailed type MB plough cost Rs. 8,000/-. The operating speed of both ploughs is 5 kmph and expected field performance index is 80%. If the cost per hectare of tractor unit is same, what would be the size of land for which both the plough will be equally economical?

Explain about the construction of MB plough with suitable sketches.

Write about different terminologies involved in ploughing of land.

Explain about the construction of standard disc plough with a neat sketch.

Explain about the adjustments of MB plough with suitable sketches.

Explain about the construction and operation of power shovel.

Explain about the construction and working of ladder type trenching machine with a neat sketch.

Write about the operation of bulldozer.

Explain about construction and operation of wheel-type trenching machine with a neat sketch.

Write about the components of seed cum ferti drill.

Calculate the time and power required for sowing four hectares of land by a 5 furrow seed drill, going 5 cm deep. The speed of the seed drill is 3 km/ h and the pressure exerted by soil on the seed drill is 0.42 kg/ cm2. The spacing between the two furrow openers is 20 cm. Loss of turning is 10%. Assume width of each furrow opener = 5 cm.

Explain about horizontal and vertical plate metering mechanisms of planter.

Write about the methods for testing of seed uniformity of metering mechanism.

Explain about construction and working of rocker sprayer with a neat sketch.

Explain about construction and working of manual operated rice tranplanter.

A field sprayer is operated by a tractor at 3 kmph. The sprayer has 16 nozzles spaced 45 cm apart with nozzle pressure of 10.7 kg/cm2 and application rate of 1.52 m3 per hectare, Calculate: i) Pump efficiency, if 10 percent of the liquid is lost in by passing. ii) Horse power of engine, if pump efficiency is 70 percent and engine is loaded to 90 percent of its rated power. Take 0.6 BHP needed for agitating the spray liquid. iii) Rate per nozzle.

Explain about ultra low volume sprayer with a neat sketch.