**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

**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

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

(1) oblate

(2) prolate

(3) ovate

(4) obovate

**Ans:- **(4) obovate

**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

**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

- _________
**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

** **

**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

** **

**The hammer mill is assumed to reduce size by**

(1) Impact

(2) Compression

(3) Shearing

(4) Crushing

**Ans:- **(1) Impact

** **

**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

** **

**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

** **

**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

** **

**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

** **

**__________ permits early harvest of crops.**

(1) Storage

(2) Cooling

(3) Drying

(4) None of the above

** **

**Ans:- **(3) Drying

** **

**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

** **

**___________ 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

** **

**__________ 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

** **

**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

** **

**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

** **

**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%

** **

**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

** **

**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

** **

**____________ 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**.**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

** **

**The most widely used material of a solar cell is**

(1) Arsenic

(2) Aluminum

(3) Silicon

(4) Steel

**Ans:- **(4) Steel

**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

** **

**Regarding testing of a transformer, the following statements are made :**- Open circuit and short circuit tests can determine efficiency only.
- Open circuit and short circuit tests are simple to conduct.
- Power required to carry out open circuit and short circuit tests is very large compared with full-load output of a transformer.
- 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

** **

**Biogas consists of**

(1) Only methane

(2) Methane and C0_{2} with same impurities

(3) A special organic gas

(4) None of the above

**Ans:- **(2) Methane and C0_{2} with same impurities

** **

**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

** **

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

** **(1) 300 – 700 kg/cm^{2}

(2) 300 – 700 N/m-m^{2}

(3) 30 – 70 kg/cm^{2}

(4) 100 – 500 N/m-m^{2}

^{ }

**Ans:- **(2) 300 – 700 N/m-m^{2}

^{ }

**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

** **

**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

** **

**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

** **

**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

** **

**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

** **

**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

** **

**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

** **

**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 = EI**_{30 }x I_{30 }/100**E. = 210.3 + 89 log (I)****E. = 210.3 + 89***I*n (I)**E. = ½ R I**^{2}

** **

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

** **

**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

**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

** **

**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

** **

**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

** **

**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

** **

**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

**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

**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

**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

**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**.**A rectangular farm pond has the following dimensions :**- Length = 10 m
- Width = 5 m
- 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

** **

**A farm pond has the following specifications :**

** **

**Bottom surface = 5 x 5 m****Depth = 5 m****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