2024
29-06-2024
Renewable Energy Engineering- ICAR JRF/SRF 2024
Official solved question paper with verified bilingual step-by-step solutions and key concepts. आधिकारिक हल प्रश्न पत्र — विस्तृत द्विभाषी व्याख्या, प्रामाणिक उत्तर कुंजी एवं मुख्य अवधारणाओं सहित।
Questions in this Paper इस प्रश्न पत्र के प्रश्न
120 Questions 120 प्रश्न
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Movement of DNA from one bacterium to another through a tubular bridge or pilus:
Which of the following is responsible for eliminating toxic oxygen by-products from cells?
form of multiple parasitism in which a parasite preferentially attacks a host that is already parasitized by another species is
known as
For mass multiplication of DD-136 nematode, the common host used is
Chlorpyriphos methyl is effective against stored product insects except
Which of the following insects often cause inhalational allergies in human following large emergence of adult insects
Given below are two statements
Statement (|); Climate is a weather condition related to smaller areas at a given place and at a given time.Statement (II) : Weather is a condition of atmosphere at a given place and at a given time
In light of the above statements, choose the most appropriate answer from the options given below.
The local name of cyclone in Philippines is
Which one of the following are secondary tillage implements?
(A) .Subsoiler
(B) .Cultivator
(C) .Disc harrow
(D) . Wetland plough
Choose the correct answer from the options given below:
is the most suitable, drought resistant and persistant grass?
The rainfed area in India is approximately
Which nutrient is often a limiting factor in agricultural production?
What is a potential disadvantage of agroforestry systems?
Pungency in mustard oil is due to
Sesamum belongs to the family
Dark period is critical in which type of plant?
Which of the following is NOT a significant contributor to greenhouse gas emissions from livestock farming?
Fe deficiency is mostly seen in crops growing on
EDV (Essentially Derived Varieties) are those which are derived from
What is the role of "companion planting" in agriculture?
Given below are two statements, one is labelled as Assertion (A) and other one labelled as Reason (R).
Assertion (A) : A fluidised bed gasifier is most versatile and can handle biomass with high ash content
Reason (R) : Fluidised bed generally contains either inert material or reactive material
In light of the above statements, choose the correct answer from the options given below.
Given below are two statements, one is labelled as Assertion (A) and other one labelled as Reason (R).
Assertion (A) : Noise Induced Hearing Loss (NIHL) is irreversible.
Reason (R) : NIHLis even, being greater in lower frequency than higher frequency.
In light of the above statements, choose the correct answer from the options given below.
Given below are two statements
Statement (I) : The top of the piston heats much more than does the lower skirt
Statement (II) : The pistons are made larger at the top to absorb excessive heat released during compression stroke, and are
said to have skirt taper.
In light of the above statements, choose the most appropriate answer from the options given below.
Given below are two statements
Statement (I) : Premixed combustion is smoother and quieter than diffusion combustion
Statement (II) : The longer the ignition delay, the higher percentage of the fuel that burns in premixed combustion and lower
the percentage that burns in diffusion combustion
In light of the above statements, choose the most appropriate answer from the options given below.
Given below are two statements
Statement (I) : Hydrodynamic lubrication occurs when oil film is thick enough to prevent projections on one surface from
contacting those projections on the mating surface
Statement (II) : All bearings in an engine are in hydrodynamic lubrication when the engine is started from rest or when it is
coasting to a stop
In light of the above statements, choose the most appropriate answer from the options given below.
Most of the gears fail from
(A) . bending fatigue
(B) . surface wear
(C) . stiff housing
(D) . pitting
(©). curved surfaces
Choose the correct answer from the options given below:
Machine parameters those influence the performance of a combine harvester are
(A) . speed of reel
(B) . speed of threshing cylinder
(C) . extent of vibration
(D) . height of cut
(©). speed of straw rack
Choose the correct answer from the options given below:
Choose the correct characteristics of the Darrieus rotor.
(A) . low starting torque
(B) . self-starting
(C) . high speed
(D) . potentially high capital cost
(©). high efficiency
Choose the correct answer from the options given below:
Which of the following are air heat plate collectors based on absorbing surface?
(A) . flat plate absorber
(B) . sandwich type absorber
(C) . corrugated plate absorber
(D) . overlapped transparent plate absorber
(©). transpiration absorber
Choose the correct answer from the options given below:
‘Among the different type of combustion chambers, the peak pressure is the lowest for the
Range of aspect ratio for high molded tyres
In the frequency response plot, the amplitude ratio of output to input of a filter is plotted against frequency, showing transmission only within an intermediate frequency band between lower cutoff $f_1$ and upper cutoff $f_2$. What is the type of filter?
1. Low pass filter
2. High pass filter
3. Band pass filter
4. Notch type filter
Which of the following is not a type of solar still?
To minimize ride vibrations, the location of the operator's seat should be
Which of the following is an obtuse angle-type furrow opener?
What is the terminal velocity for the wheat chaff?
Which of the following threshing cylinder is used for producing very fine wheat straw?
Given below are two statements, one is labelled as Assertion (A) and other one labelled as Reason (R).
Assertion (A) : Concave end of the disc harrow gang tends to penetrate more deeply than the convex end.
Reason (R) : The radial force, which includes the vertical support force on the disc blade, must pass slightly to the rear of
the disc centerline
In light of the above statements, choose the correct answer from the options given below.
Given below are two statements, one is labelled as Assertion (A) and other one labelled as Reason (R).
Assertion (A) : The power requirement of a rotary mower is much higher than that of a sickle bar mower of the same width
Reason (R) : The knives of rotary mower are hinged to the disc or drum so that they can swing back if they hit a rock or
other obstruction; centrifugal force keeps the knives in cutting position during normal operation
In light of the above statements, choose the correct answer from the options given below.
Given below are two statements, one is labelled as Assertion (A) and other one labelled as Reason (R).
Assertion (A) : The rotating counterweight commonly provided on the flywheel of a mower pitman drive does not give
complete balancing
Reason (R) : Inertia force of the knife varies as the square of crank speed and as the first power of stroke
In light of the above statements, choose the correct answer from the options given below.
Match List-I with List-II:
Choose the correct answer from the options given below:
Alinear reservoir is one in which storage is directly proportional to:
Match List-I with List-II:
Choose the correct answer from the options given below:
Given below are two statements
Statement (I) : Specific speed of the pump is directly proportional to the square root of head.
Statement (II) : The specific speed for a single impeller centrifugal pump varies between 300 to 5000.
In light of the above statements, choose the most appropriate answer from the options given below.
Given below are two statements
Statement (I) : Water requirement of the crops is lesser than the field irrigation requirement.
Statement (II) : Field irrigation requirement does not include contribution from other sources except irrigation
In light of the above statements, choose the most appropriate answer from the options given below.
Match List-I with List-II:
Choose the correct answer from the options given below:
Given below are two statements
Statement (I) : Single crop coefficient approach is used for surface irrigation methods.
Statement (II) : Dual crop coefficient approach is used for micro irrigation methods
In light of the above statements, choose the most appropriate answer from the options given below.
Given below are two statements
Statement (I) : Blaney-Criddle method uses mean temperature and monthly percentage day time hours.
Statement (II) : Blaney-Criddle method was developed for the humid condition for consumptive use computation
In light of the above statements, choose the most appropriate answer from the options given below.
Concrete mixture (Cement: Sand: Gravel or broken stone) usually recommended for lining of canals is:
Given below are two statements
Statement (I) : A channel section is most economical when maximum discharge is obtained for a given cost of construction.
Statement (II) : Discharge is maximum when the flow velocity is minimum
In light of the above statements, choose the most appropriate answer from the options given below.
Drip emission uniformity ($EU$) is calculated using which formula?
Leaching requirement ($LR$) is estimated using which equation?
Light soils can be irrigated successfully across slope up to:
Following are the statements regarding irrigation efficiencies.
(A) . Water conveyance efficiency is associated with the canal network
(B) . Water application efficiency is related with the irrigation method.
(C) . Economic efficiency is related with the overall performance of the irrigation system
Choose the correct answer from the options given below:
Following are the statements regarding sediment loads.
(A) . Bed load is associated with the movement of coarse particles along the bed surface through sliding, rolling and saltation
(B) . Bed load forms less than 25 % portion of total load
(C) . Suspended load of a stream is not measured by sampling the stream flow.
Choose the correct answer from the options given below:
Time of concentration (Tc) is expressed by the following equation
Given below are two statements, one is labelled as Assertion (A) and other one labelled as Reason (R).
Assertion (A) : The lower and upper limit of the curve number corresponds to 0 and 100
Reason (R) : The lower curve number corresponds to highest runoff potential and indicates an impermeable surface.
In light of the above statements, choose the correct answer from the options given below.
Following are the statements regarding grassed waterways:
(A) . The Manning's coefficient of roughness is 0.04 for design
(B) . These are designed to carry maximum runoff from a storm of 10 years recurrence interval
(C) . These are constructed across the land slope to remove excess water.
Choose the correct answer from the options given below:
The minimum length of shelter belt should be how many times of its height?
Compute drainage coefficient if
Match List-I with List-II:
Choose the correct answer from the options given below:
Equation for predicting EMC of agricultural products is given by
(A) . Kelvin
(B) . Harkins-Jura
(C) . Henderson
(D) . Janssen
Choose the correct answer from the options given below:
Given below are two statements
Statement (I) : In a deep bin, plane of rupture strikes the opposite side of structure before it meets the grain surface.
Statement (II) : A grain bin can be classified as deep bin when the depth of grain is greater than the equivalent diameter.
In light of the above statements, choose the most appropriate answer from the options given below.
Thermal vapour compression is used in
(A) . Evaporator
(B) . Homogenizer
(C) . Pasteurizer
(D) . Blancher
Choose the correct answer from the options given below:
Given below are two statements
Statement (I) : Majority of the drying of agricultural produce fall under falling rate regime.
Statement (II) : Spray dryers are commonly used for liquid foods
In light of the above statements, choose the most appropriate answer from the options given below.
Ideal elastic behaviour of a material can be explained by
In comparison to other types of conveyors, screw conveyors
Major functions of blanching of fruits and vegetables before dehydration and canning include
(A) . Inactivation of enzymes
(B) . Killing of pathogenic microbes
(C) . Softening of tissue
(D) . Cleaning of raw material
Choose the correct answer from the options given below:
Glazing is related to which of the following crop processing?
Capacity of an air screen cleaner depends on which of the following parameters?
(A) . Grain bed depth
(B) . Size of screen surface
(C) . Feeding mechanism
(D) . Percentage opening area of screen
Choose the correct answer from the options given below:
What is the primary chemical process used in the production of biodiesel from raw materials?
Bioethanol production from lignocellulosic biomass typically does not include which of the following stages?
Compared to fossil fuels, liquid biofuels are not intended to
Which instrument is commonly used to measure solar radiation?
What is the main function of the absorber plate in a flat plate solar collector?
What principle do solar thermal power stations primarily use to generate electricity?
What is the primary purpose ofa solar still?
When estimating the load for a PV system, which factor is not typically considered?
What is the primary role of an inverter in a PV system?
In solar driers, what is the process that primarily drives moisture removal from the product?
What is a unique feature of salt-gradient solar ponds?
What is a key advantage of using PV powered water pumps in remote locations?
What is the term used to describe the variation of wind speed with height above the ground?
Which law relates wind speed at one height to that at another height in the atmospheric boundary layer?
What is the primary purpose of an aerofoil in wind turbine design?
Which matter presence is indicated by means of biological oxygen demand?
Kjeldahl method is used to determine which of the following parameters in the sample
Dulong's formula can be used to calulate calorific value of biomass based on which composition?
How many kilogram of oxygen is required to burn one kg of methane?
Match List with List-l bes
Choose the correct answer from the options given below :
Match List - I with List - II :
Choose the correct answer from the options given below :
Match List - I with List - II :
Choose the correct answer from the options given below :
Match List - I with List - II :
Choose the correct answer from the options given below :
Match List - I with List - II :
Choose the correct answer from the options given below :
Match List with List. rat. Soares (0). Solar radiation is being collected as direct radiation andlor reflected Iadiation/concentrated radiation (@). Specific heat eneray for rice (1.11 ksrka?c KC), Geoking eneray:requrement per, (\ll). Higher will be the eneray required for cooking person per day
Choose the correct answer from the options given below :
Match List I with List II:
Choose the correct answer from the options given below :
Match List with List-l a ae
Choose the correct answer from the options given below :
Given below are two statements, one is labelled as Assertion (A) and other one labelled as Reason (R).
Assertion (A) : Based on discounted cash flow calculations, the NPV method gives a correct ROI
Reason (R) : When calculating the net historical value of a project's cash flow, the NPV approach is the one most commonly
utilized
In light of the above statements, choose the correct answer from the options given below.
Geothermal energy is used in India in the form of
(A) .Power generation
(B) .Space heating
(C) .Extraction and refining of borax and sulphur
(D) Refrigeration
(). Geomethanation
In light of the above statements, choose the correct answer from the options given below.
What will be the overall efficiency of an ocean thermal energy conversion plant if the temperature of warm water in the
surface layer is 30°C and temperature of cold water in the depth of the tropical ocean is 8°C. It can be assumed that the
relative efficiency factor of the power plant is 0.5
A tidal power plant of single basin type, has a basin area of 25 x10° m2. The tide has a range of 10 m. The turbine however,
stops operating when the head on it falls below 2 m. What will be the energy generated in one filling process, in kWh if the
turbine generator efficiency is 75%. (Density of sea water = 1025 kg/m?)
The temperature range achieved in enclosed box type solar cooker with reflector is
What is the radiative heat transfer coefficient between a wall's surface at 25 °C and the temperature of the ambient air, Ta =
Wind energy is very sensitive to the wind velocity because wind power is directly proportional to the
Cellulosic biomass conversion into fuel uses which path
Which one of the following has two-reversible isotherms and two reversible isobars?
In wind mill the ratio of power delivered by rotor to the maximum power available in the wind is called
Thermal efficiency of biogas is about
Fixed dome type biogas plant is also known as
In fixed dome type biogas plant the gas holder is made of
A Scheffler’ Solar concentrator has
In Parabolic Trough Collector temperature is attained upto
Temperature attained by a flat-plate collector is
In evacuated tube collectors
The special composition of the solar cells allow the electrons to flow in
India is producing Geothermal energy in
Select the Non-conventional energy sources from the following
What is the rate of solar energy reaching the earth's surface?
In what form is solar energy radiated from the sun?
What percentage of energy striking the outer atmosphere of the earth reaches its surface ?
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