List of top Farm Power Questions asked in GATE Agricultural Engineering

A cylindrical concrete silo of 6 m internal diameter and 24 m height is filled with rough rice having a bulk density of 635 kg/m\(^3\). The angle of friction between the concrete wall and rough rice is 30°. The ratio between lateral and vertical pressure is 0.4. The ratio of lateral pressure at 10 m depth to the 5 m depth is _________. (Rounded off to 2 decimal places)
An engine, running at 1200 rpm, drives a 1.2 m diameter rigid wheel on a non-deformable surface at 5 km/h forward speed. The power is transmitted from the engine to the wheel through a transmission gearbox (gear ratio = 3:1), a differential (gear ratio = 4:1), and a final drive (gear ratio = n:1). Neglecting the deformation of the wheel and wheel slip, the value of \(n\) is __________ (Rounded off to 2 decimal places)
A four-stroke diesel engine has a displacement volume of 6.0 L and it operates at 2300 rpm with 75% mechanical efficiency. The indicated mean effective pressure is 800 kPa. If the engine has brake-specific fuel consumption of 320 g.h\(^{-1}\).kW\(^{-1}\), considering calorific value of the fuel as 44.6 MJ.kg\(^{-1}\), the fuel equivalent power is _________ kW. (Rounded off to 2 decimal places)
Which of the following method(s) is/are generally used in spark ignition engines for evaluating volatility?

Match the terms in Column I with the suitable hydrometeorological variables in Column II.


 

Locust beans having an average particle diameter of 7 mm are ground at a rate of 10 ton/h to produce an average particle diameter of 0.62 mm. The mill consumes 6.7 kW power at the given rate. For the same rate of grinding, using Rittinger’s law, the power required to grind the beans to an average particle diameter of 0.25 mm is _________kW. (Rounded off to 2 decimal places)
A mixture of Nitrogen (N\(_2\)) and Helium (He) gases is contained in a pipe at 1.0 atm pressure and at 298 K. At one point in the pipe, the partial pressure of N\(_2\) is 60.80 kPa and at a point 0.22 m apart, the partial pressure of N\(_2\) is 20.31 kPa. The diffusion coefficient of the mixture is \(0.612 \times 10^{-4}\) m\(^2\).s\(^{-1}\). Considering Universal gas constant as 8314 m\(^3\).Pa.kg mol\(^{-1}\).K\(^{-1}\), the steady-state flux of N\(_2\) is \(n \times 10^{-6}\) kg mol.s\(^{-1}\).m\(^{-2}\). The value of \(n\) is _________ (Rounded off to 2 decimal places)