Agricultural Engineering Gate 2016 Questions with Answer

Ques 14 GATE 2016

The rated nozzle flow rate and volume median diameter (VMD) of droplets of a hydraulic sprayer are 1.0 L min-1 and 200 µm, respectively at the rated pressure of 500 kPa. If the desired nozzle flow rate is 1.5 L min-1, the droplet diameter in µm will be

Ques 15 GATE 2016

While testing a wheat thresher at the recommended throughput, 80 N m torque is recorded at 750 rpm at the main shaft of the threshing cylinder, which is operated by a 200 mm diameter v-pulley. The overload factor and unit mass of the v-belt are 1.2 and 0.9 kg m-1, respectively. At the condition of maximum power transmission, the maximum tension in the v-belt in N is

Ques 16 GATE 2016

A tractor PTO operated 4-disc rotary mower is harvesting with a forward speed of 3.5 km h-1. The cutting circle diameter and rpm of each disc are 60 cm and 1400, respectively. The peak cutting force experienced by each rotary disc is 110 N. The peak overall motion resistance is found to be 3.6 kN. If the overall power conversion efficiency of the tractor is 82%, required peak engine brake power in kW will be

Ques 17 GATE 2016

A circular grain silo with conical bottom, as shown in figure, is filled with wheat (true density 1200 kg m-3) with porosity of 0.6. Five hundred metric tonne of wheat fills 80% of its capacity (by volume). The total height (h) of the silo from its grain outlet end in m is

Ques 18 GATE 2016

Match the following

Ques 19 GATE 2016

The ASAE-SAE standard for tractor 3-point hitches has been categorized as Category I to IV on the basis of

Ques 20 GATE 2016

As per ASAE standards, the diameter of 1000 rpm-PTO shaft with 20 splines is

Ques 21 GATE 2016

In restrained link operation of three point hitches, the line of pull passes

Ques 22 GATE 2016

A gear pump discharges 100 L min-1 against a system pressure of 15 MPa. The overall efficiency of the pump is 0.75. Input power to run the pump in kW is

Ques 23 GATE 2016

The intake pressure of a diesel engine is 1 bar and pressure at the end of the compression is 34 bar. The adiabatic exponent is 1.3 and the expansion ratio is 7. The diesel cycle efficiency in percentage is

Ques 24 GATE 2016

In a tractor rear axle differential, the bevel pinion has 12 teeth and bevel/crown gear has 42 teeth. The input speed and torque of the bevel pinion are 520 rpm and 1200 N m, respectively. There is a planetary gear between the differential unit and each half axle with 4:1 speed reduction. The left wheel encounters poor traction when the tractor is moving in straight path that causes 15% drop in the left axle torque. If the differential efficiency is 0.98, the right axle torque under locked differential condition in N m will be

Ques 25 GATE 2016

A tractor weighing 21 kN has 70% static weight on rear axle and its wheel base is 1.8 m. The drawbar hitch is located 25 cm behind the rear axle centre and 35 cm above the ground level. To overcome longitudinal instability, the front end loading is provided at a distance of 20 cm ahead of the front axle centre. It is observed that, there is front-end instability in the tractor due to a pull of 30 kN inclined at 20° downward from the horizontal. A minimum front-end load required to overcome the instability in N is

Ques 26 GATE 2016

A 2.5 m long pipe is insulated at both ends. It has ID and OD as 50 mm and 56 mm, respectively. Its log-mean heat transfer area in m2 is