Maharashtra Agriculture Department Krushi Sevak Exam Paper Set 1

1. In drying. __________ causes movement of moisture from inside of kernel to the surface.

(1) vapour pressure gradient

(2) temperature gradient

(3) humidity gradient

(4) None of the above

Ans:-  (3) humidity gradient

2. The dry bulb temperature, wet bulb temperature and dew point temperature of moist air are equal when relative humidity (RH) is___________percent.

(1) zero

(2) 10

(3) 50

(4) 100

Ans:- (1) zero

3.The electrical resistance of grain depends upon

(1) grain compaction

(2) grain temperature

(3) moisture present in grain

(4) All of the above

Ans:- (3) moisture present in grain

4. The shape of a lemon fruit is classified as __________ spheroid.

(1) oblate

(2) prolate

(3) ovate

(4) obovate

Ans:-  (4) obovate

5. The angle of repose __________ with an increase in the moisture content of food materials.

(1) Increases

(2) Decreases

(3) Either increases or decreases

(4) Remains unchanged

 

Ans:- (3) Either increases or decreases

6. In Theology, the Maxwell model is represented as

(1) .dashpot

(2) spring

(3) spring and dashpot in parallel

(4) spring and dashpot in series

Ans:-  (2) spring

7. _________ is especially useful for removing lightweight infertile seeds from seed stock and hence improves seed germination.

(1) Screen cleaner

(2) Specific gravity separator

(3) Spiral separator

(4) Indented cylinder separator

 

Ans:-  (3) Spiral separator

 

8. in air screen cleaners, for cleaning of round shaped grains,__________are used.

 

(1) Top screen round holes and bottom screen slotted holes

(2) Top screen slotted holes and bottom screen round holes

(3) Top screen triangular holes and bottom screen slotted holes

(4) Top screen slotted holes and bottom screen triangular holes

 

Ans:-  (3) top screen triangular holes and bottom screen slotted holes

 

9. The hammer mill is assumed to reduce size by

(1) Impact

(2) Compression

(3) Shearing

(4) Crushing

 

Ans:-  (1) Impact

 

10. Majority of HTST pasteurizers’ use_________heat exchangers with sections for regenerative heating, heating and cooling.

 

(1) Plate type

(2) double pipe

(3) Shell and tubes

(4) Shell and coil

 

Ans:–  (1) plate type

 

11. Fan laws state that the pressure developed by a centrifugal pump varies as

 

(1) Its rotational speed

(2) Square of rotational speed

(3) Cube of rotational speed

(4) Independent on its rotational speed

 

Ans:-  (2) Square of rotational speed

 

12. Planck’s law can be used for estimation of

 

(1) . Time of freezing

(2) Time of drying

(3) Time of boiling

(4) Time of germination

 

Ans:- (3) Time of boiling

 

13. The amount of heat conducted across unit area and unit thickness of a material in unit time for unit change in temperature is.

 

(1) Enthalpy

(2) Specific heat

(3) Thermal diffusivity

(4) Thermal conductivity

 

Ans:- (2) Specific heat

 

14. __________ permits early harvest of crops.

 

(1) Storage

(2) Cooling

(3) Drying

(4) None of the above

 

Ans:- (3) Drying

 

15. The value of dry basis moisture content is__________the wet basis moisture content.

 

(1) Less than

(2) Equal to

(3) More than

(4) None of the above

 

Ans:-  (3) More than

 

16. ___________ properties may be defined as those which affect the behaviour of agricultural material under applied force.

 

(1) Thermal

(2) Mechanical

(3) Rheological

(4) None of the above

 

Ans:-  (2) Mechanical

 

17. __________ properties may be defined as the science which deals with the deformation and flow of material under action of applied forces.

 

(1) Rheological

(2) Mechanical

(3) Thermal

(4) None of the above

 

Ans:-  (4) None of the above

 

18. The__________ separates materials on the basis of difference in length of various constituents.

 

(1) Air-screen cleaner

(2) Specific gravity separator

(3) Disk separator

(4) Spiral separator

 

Ans:-  (4) Spiral separator

 

19. The major purpose of blanching is to inactivate__________which would otherwise lead to quality reduction in

       Processed food.

 

  (1) Enzymes

(2) micro-organisms

(3) Yeast

(4) Insects

 

Ans:-  (2) micro-organisms

 

20. Wind speeds increase with height. Wind speeds have traditionally been measured at a standard height of_________where they are found to be__________greater, than close to the surface.

 

(1) 5.0 meters; 10 to 20%

(2) 7.0 meters; 15 to 25%

(3) 10.0 meters; 20 to 25%

(4) 8.0 meters; 15 to 20%

 

Ans:-  (2) 7.0 meters; 15 to 25%

 

21. The best suited material for the construction of transformer core is

(1) Silicon steel

(2) Hard steel

(3) Wrought iron

(4) Copper

 

Ans:- (2) Hard steel

 

22. While conducting a short-circuit test on a transformer, the following side is short-circuited :

 

(1) High voltage side

(2) Low voltage side

(3) Primary side

(4) Secondary side

 

Ans:-  (3) Primary side

 

23. ____________ is one of the low cost fences that is widely used for confining diary cattle.

 

(1) Barbed wire fence

(2) Plain wire fence

(3) Welded wire fence

(4) Electric fence

 

Ans:-  (4) Electric fence

 

24. 24. The core of a transformer is made up of laminations in order to

 (1) Reduce hysteresis loss

(2) Reduce eddy current loss

(3) Reduce copper loss

(4) Reduce hysteresis and eddy current losses

 

Ans:-  (2) Reduce eddy current loss

 

25. The most widely used material of a solar cell is

(1) Arsenic

(2) Aluminum

(3) Silicon

(4) Steel

 

Ans:-  (4) Steel

 

26. As air moves across the surface of the Earth, its speed and direction changes by the local topography as well as by

(1) Local heating

(2) Local cooling

(3) Both (1) and (2)

(4) None of the above

 

Ans:-  (2) Local cooling

 

27. Regarding testing of a transformer, the following statements are made :
28. Open circuit and short circuit tests can determine efficiency only.
29. Open circuit and short circuit tests are simple to conduct.
30. Power required to carry out open circuit and short circuit tests is very large compared with full-load output of a transformer.
31. Direct loading method can also be used to determine efficiency and regulation of a transformer.

 

Out of the above, following statement/s is/are true :

 

(1) a, band d only

(3) b, c and d only

(2) a and d only

(4) b and d only

 

Ans:-  (2) a and d only

 

28. Biogas consists of

(1) Only methane

(2) Methane and C0₂ with same impurities

(3) A special organic gas

(4) None of the above

 

Ans:-  (2) Methane and C0₂ with same impurities

 

29. In this type of energy conversion system, it will have a cut-in speed, rated speed and cut-out speed.

 

(1) Solar

(2) OTEC

(3) Wind

(4) Thermal

Ans:-  (2) OTEC

 

30. The compressive strength of concrete used for different structures is in the range of

 (1) 300 – 700 kg/cm²

(2) 300 – 700 N/m-m²

(3) 30 – 70 kg/cm²

(4) 100 – 500 N/m-m²

 

Ans:-  (2) 300 – 700 N/m-m²

 

31. 31. A building is to be constructed on alluvial soil having a bearing pressure of 6000 kg1sq.m. What shall be the width of masonry foundation having 4000 kg of dead load per running metre of the wall ?

 

(1) 0.4 m

(2) 0.8 m

(3) 0.12 m

(4) None of the above

 

Ans:–   (1) 0.4 m

 

32. The flooring material which is a mixture of linseed oil, gums and resins, pigments, wood floor, cork dust and other filling materials is termed as

(1) Linoleum

(2) Hindaleum

(3) Magnesite

(4) Dolomite

 

Ans:- (4) Dolomite

 

33. Use of steel trusses is economical when it is used for spans greater than

(1) 12m

(2) 8m

(3) 16m

(4) 20m

 

Ans:-  (4) 20m

 

34. In shallow foundations, if the wall rests directly on foundation concrete without any step, it is called

(1) Spread footing

(2) Swallow footing

(3) RCC pier

(4) Simple footing

 

Ans:-  (2) Swallow footing

 

35. Which equation is used to estimate the velocity of flow through a channel in designing grass waterways ?

(1) Ranker’s equation

(2) Israel son equation

(3) Rational equation

(4) Manning’s equation

 

Ans:-  (3) Rational equation

 

36. In the following formula, ‘x’ is used to compute which parameter ?

X = 1.3 x 100S/VI

Where,  S = Slope of land in percent

VI = Vertical interval in metres

(1) Total earthwork per hectare

(2) Total length of bund per hectare

(3) Vertical interval between two consecutive contour bunds

(4) Horizontal interval between two consecutive graded bunds

 

Ans:- (4) Horizontal interval between two consecutive graded bunds

 

37. Which one of the following is not a type of bench terrace?

 (1) Level

(2) Inwardly slopping

(3) Outwardly slopping

(4) Along contour

 

Ans:-  (1) Level

 

38. Kinetic Energy of a rainfall storm is determined by which equation where unit of K.E. is m-tonnes/ha-cm ?

   Where, I = rainfall intensity, cm/hr

 

• E = EI₃₀ x I₃₀ /100
• E. = 210.3 + 89 log (I)
• E. = 210.3 + 89 In (I)
• E. = ½ R I²

 

Ans:- (2) K.E. = 210.3 + 89 log (I)

 

39. Erosive is defined as

(1) Capacity of wind to cause erosion

(2) Capacity of rain to cause erosion

(3) Vulnerability of soil susceptible for erosion

(4) None of the above

 

Ans:-  (3) Vulnerability of soil susceptible for erosion

 

40. He was the first man who discovered that an electromotive force (emf) is generated in a conductor when the conductor is cut by magnetic lines of force (flux).

 

(1) Faraday

(2) Newton

(3) Einstein

(4) Pascal

 

Ans:-  (2) Newton

 

41. Siltation, suspension and surface creep forms of movement of soil particles is associated with which type of soil erosion from the following ?

(1) Gully erosion

(2) Rill erosion

(3) Wind erosion

(4) None of the above

 

Ans:-  (3) Wind erosion

 

42. What will be the vertical interval between two consecutive contour bunds if the land slope is 3% ?

 (1) 0.90 m

(2) 0.30 m

(3) 3.00 m

(4) 1.20 m

 

Ans:-  (4) 1.20 m

 

43. Which one of the following is not a permanent gully control structure ?

 

(1) Drop spillway

(2) Chute spillway

(3) Drop inlet spillway

(4) Brushwood dam

 

Ans:-  (1) Drop spillway

 

44. Soil erosion which results in the form of uniform removal of soil from land surface is termed as

 (1) Splash erosion

(3) Rill erosion

(2) Sheet erosion

(4) Gully erosion

 

Ans:-  (2) Sheet erosion

 

45. In case of streams, stream bank erosion generally takes place on the__________ side of the stream.

(1) Convex

(2) Concave

(3) Downstream

(4) Top

 

Ans:-   (3) Downstream

 

46. The damaging effect of floods depends on their super criticality which is measured by the Froude number (Fr).

 

        The flow is said to be supercritical, if

 

• Fr < 1
• Fr = 1
• Fr > 1
• Fr < 1

 

    Ans:-  (4)  Fr < 1

 

47. Threshold rainfall is defined as

(1) Cumulative rainfall before initiation of runoff

(2) Cumulative rainfall of storm

(3) Total daily rainfall

(4) None of the above

 

Ans:–  (2) Cumulative rainfall of storm

 

48. Which one of the following is not an artificial Rainwater Harvesting technique ?

(1) Rock fracturing

(2) Bore blast technique

(3) A forestation

(4) Construction of jacket around the well

 

Ans:-  (3) A forestation

 

49. 49. A rectangular farm pond has the following dimensions :
50. Length = 10 m
51. Width = 5 m
52. Depth = 1 m

If it is totally filled in, what will the volume be in liters ?

(1) 50

(2) 500

(3) 5,000

(4) 50,000

Ans:-  (4) 50,000

 

50. A farm pond has the following specifications :

 

1. Bottom surface = 5 x 5 m
2. Depth = 5 m
3. Side slopes = 1 H : 1 V

    (On all the sides)

What will the size of the top of the farm pond be ?

(1) 10mx 10 m

(2) 20mx 20 m

(3) 15 m x 15 m

(4) 20 m x 10 m

 

Ans:- (3) 15 m x 15 m