API degree of Light diesel oil is
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Shell and tube type heat exchanger are used for
A. Bulk Steriliation
B. Fruits Juice
C. Milk Steriliation
D. None of the above
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In a tractor, the centre of gravity should be located approximately . . . . . . . .. a head of rear axle.
A. 1 /3 of the wheel base
B. 1 /2 of the wheel base
C. 2 /3 of the wheel base
D. 2 /4 of the wheel base
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The radius of curvature of a disc with 60 cm dia, 10 cm concavity will be
A. 80 cm
B. 60 cm
C. 45 cm
D. 50 cm
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The word tillage is derived from
A. Greek
B. Latin
C. English
D. Anglo-Saxon
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A tractor seat suspension should have its natural frequency in the range of
A. 0.5 to 2.0 cycles/s
B. 2.0 to 4.0 cycles/s
C. 4.0 to 6.0 cycles/s
D. None of the above
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Anthropometric data refers to
A. Machine - crop system
B. Machine - environment system
C. Body part movement
D. Both A and B
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What is the average calorific value of a paddy husk?
A. 3600 Kcal/kg
B. 4000 Kcal/kg
C. 2000 Kcal/kg
D. 1500 Kcal/kg
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The most used and least efficient power outlet of a tractor is
A. PTO shaft in the front
B. PTO shaft in the rear
C. Drawbar in the rear
D. None of these
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The upper limit of a tensiometer of soil moisture tension measurement is
A. 0.85 centibar
B. 8.5 centibar
C. 85 centibar
D. 100 centibar
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The anti-knock quality of petrol fuels is given by
A. Octane number
B. Cetane number
C. Butane number
D. Oxidation number
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The value of Stefan-boltzman constant is
A. 9.81 × 10-8 watt/m2 k4
B. 5.67 × 10-8 watt/m2 k4
C. 5.65 × 10-10 watt/m2 k4
D. 0
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Deep tillage is preferred under
A. Long duration, deep rooted crops
B. Root crops
C. Dryland conditions
D. All of the above
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Heavy draft of a disc plough is due to
A. Blunt disc
B. Furrows to wide
C. Loose bearings
D. None of the above
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Free board is provided to accommodate the embankment height against
A. Sliding
B. Overturning
C. Overtopping
D. All of the above
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Free seed carried over the walker or tack in straw and discharged from the rear of machine is called
A. Cylinder loss
B. Gathering loss
C. Walker loss
D. Shoe loss
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The cut fill ratio usually varies from . . . . . . . . to . . . . . . . .
A. 1.2 and 1.6
B. 1.6 and 1.8
C. 1.8 and 2.00
D. 2.5 to 3.00
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A triangular DRH due to a storm has a time base of 80 hrs and peak flow of 50 m3 /sec occurring at 20 hrs from the start. If the catchment area is 144 sq. km the rainfall excess in the storm was
A. 30 cm
B. 15 cm
C. 5 cm
D. None of these
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Limiting value of speed ratio for standard pitch roller chain is
A. 16 : 1
B. 10 : 1
C. 15 : 1
D. 20 : 1
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Subsoil compaction is broken by
A. Chisel plough
B. Mould board plough
C. Cultivator
D. Disc plough
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