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Question 1 of 15
1. Question
The discharge of a centrifugal pump is 25 L per sec against the delivery head of 10 m. The outlet of the delivery pipe is submerged. A 200 m long 100 mm diameter pipe is connected with the delivery end of the pump. The friction factor for the pipe is 0.03. The minor losses in the delivery pipe are 1 m. The pressure at the delivery end of the pump in kPa is
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Question 2 of 15
2. Question
A fully penetrating tube well in a 30 m deep confined aquifer with hydraulic conductivity of .0004 m per sec has 50 L per sec discharge. The drawdown and radius of influence are 5 m and 250 m, respectively. Diameter of the tube well in mm is
Correct
Incorrect

Question 3 of 15
3. Question
An inclined blade cutting tool of 250 mm width is operating at 200 mm cutting depth. The normal load on the tool and the coefficient of soilmetal friction are 1000 N and 0.3, respectively. The soil cutting force per unit length of cutting edge is 20 N per mm. The tool lift angle is 40. The required
specific draft (or unit draft) in kPa isCorrect
Incorrect

Question 4 of 15
4. Question
The rated nozzle flow rate and volume median diameter (VMD) of droplets of a hydraulic sprayer are 1.0 L per min and 200 μm, respectively at the rated pressure of 500 kPa. If the desired nozzle flow rate is 1.5 L per min, the droplet diameter in μm will be
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Question 5 of 15
5. Question
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 vpulley. The overload factor and unit mass of the vbelt are 1.2 and 0.9 kg per m, respectively. At the condition of maximum power transmission, the maximum tension in the vbelt in N is
Correct
Incorrect

Question 6 of 15
6. Question
A tractor PTO operated 4disc rotary mower is harvesting with a forward speed of 3.5 km per hour. 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
Correct
Incorrect

Question 7 of 15
7. Question
Natural frequency of an undamped operator seat is 5 Hz, and combined weight of the seat and the operator is 880 N. If there are four springs fitted in parallel below the operator seat, the spring rate (or stiffness) of each spring in kN per m is
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Incorrect

Question 8 of 15
8. Question
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
Correct
Incorrect

Question 9 of 15
9. Question
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
Correct
Incorrect

Question 10 of 15
10. Question
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 frontend instability in the tractor due to a pull of 30 kN inclined at 20 degree downward from the horizontal. A minimum frontend load required to overcome the instability in N is
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Question 11 of 15
11. Question
One hundred kilogram spice is extracted for essential oil using twice the amount of a pure organic solvent. The extracted solid mass contains 5% residual oil (oilfree solid mass basis). The liquid extracted mass contains 20% oil. Assume no solvent is retained by the extracted solid mass. Initial mass of the oil in the spice in kg is
Correct
Incorrect

Question 12 of 15
12. Question
Milk sterilization kinetics is based on inactivation of index microorganism, Bacillus stearothermophilus. The Dvalues at 121.1 degree Celsius and 139.1 degree Celsius are 1.2 min and 0.019 min, respectively. For 12 logcycle reduction of this microorganism at 130 degree Celsius, the processing time in second is
Correct
Incorrect

Question 13 of 15
13. Question
View factor of a large cylinder of 10 cm in radius and 60 cm in length from a coaxial smaller cylinder of 5 cm radius and the same length is 0.34. View factor of the larger cylinder of itself (concave inner surface) is 0.25. The view factor of the larger cylinder with respect to either annular end is
Correct
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Question 14 of 15
14. Question
The incorrect statement from the following is
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Question 15 of 15
15. Question
If x be the highest mean monthly precipitation and y be the mean annual precipitation then the rainfall aggresiveness to soil erosion is
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