Q.76
Apiece of netting having 1000 meshes in length is rigged into a 35-meter-long rope. If the mesh size is 60 mm, what will be
the horizontal hanging coefficient?
Fishing Technology and Engineering- ICAR JRF/SRF 2024
Official ICAR JRF/SRF 2024 solved question paper with verified bilingual step-by-step solutions.
Q.77
While designing a gillnet, how much should be the ratio of twine diameter “d’, to mesh size ‘a’, for calm waters and low
catches?
Q.78
Which of the following environmental factors can influence the speed of sound in water, affecting the accuracy of acoustic
fish detection devices?
Q.79
Ina long line, the breaking strength of the main line should have at least the weight of the largest size of the
target species.
Q.80
Name seismic waves having wavelengths of 200 km and can travel as fast as 700 kmv/h, formed when a severe shock such
as an earthquake affects the ocean
Aquaculture Engineering
4 Topics
Aquaculture Farm Surveying & Earthen Pond Engineering: Site Selection, Contour Topography, Ideal Soils (Clay Loam), Dyke Design, Berms & Sluice Gates
Water Supply, Pumping & Hydraulic Structures: Tidal Feeder Canals, Monks, Weirs, Head Losses & Air-Lift Pumping Systems
Recirculating Aquaculture Systems (RAS) & Filtration Engineering: Mechanical Drums, Biological Filters (Bio-Drum), Nitrification Kinetics & Water Exchange
Open Water Cage Culture & Mooring Engineering: Circular/Rectangular Cages, Mooring Lines, Anchors, Grid Subsystems & Net Antifouling
Fish Biochemistry
4 Topics
Fish Muscle Proteins & Structural Biochemistry: Sarcoplasmic, Myofibrillar (Actomyosin), Stroma (Collagen) & Connective Mucopolysaccharides
Marine Lipids, PUFAs & Antioxidant Mechanisms: Omega-3 Fatty Acids (EPA, DHA), Lipid Peroxidation, Prostaglandin Synthesis & Astaxanthin
Non-Protein Nitrogen (NPN) & Biogenic Amines: Trimethylamine Oxide (TMAO), Urea, Free Amino Acids, Betaines, Octopine & Histamine/Cadaverine
Post-Mortem Rigor Mortis, Autolysis & Spoilage Enzymes: Glycolysis, ATP Breakdown, Cathepsins, Calpains, Bleeding & Enzymatic Hydrolysis
Fish Biology and Stock Assessment
6 Topics
Ecosystem Modeling, Remote Sensing & Marine GIS: ECOPATH with ECOSIM, Potential Fishing Zones (PFZ), Ocean Colour Sensors & Acoustic Biomass
Ichthyotaxonomy, Morphometrics & Anatomy: Finfish Classification, Meristic Characters, Larval Metamorphosis & Age Estimation via Otoliths
Trophodynamics & Feeding Ecology: Alimentary Canal Adaptations, Index of Relative Importance, Levins Niche Breadth Index & Trophic Levels
Reproductive Biology, Hermaphroditism & Maturation: Fecundity, Gonadosomatic Index, Protogyny, Diandry, Spawning Histology & Gynogenesis
Fish Growth, von Bertalanffy Model & Mortality: Length-Weight Relationship, Isometric/Allometric Growth, Total (Z), Natural (M) & Fishing (F) Mortality
Stock Assessment Models & Maximum Sustainable Yield: Surplus Production Models (Schaefer, Fox), Analytical Models, Linearized Catch Curve & MSY/MEY
Fish Curing, Value Addition and By-Products
4 Topics
Surimi Technology & Texturized Seafood Products: Water Leaching, Cryoprotectants (Sugar, Sorbitol, Polyphosphates), Heat-Induced Gelation & Kamaboko
Salting, Drying & Water Activity Principles: Moisture Sorption Isotherms, Equilibrium Relative Humidity (ERH), Halophilic Bacteria & Salt Curing Methods
Fish Smoking & Carcinogenic Compounds: Hot vs Cold Smoking, Polycyclic Aromatic Hydrocarbons (PAH / Benzopyrene), Smoke Generation & Preservative Phenols
Marine Bio-Polymers, Chitin, Chitosan & Squalene: Demineralization, Deproteinization, Deacetylation, Shark Liver Oil Squalene & Pearl Essence (Guanine)
Fisheries Livelihood
3 Topics
Gender Roles, Women in Fisheries & Welfare Schemes: Division of Labour, CEDAW, Gender Development Index (GDI), PMMSY & Microfinance Collectives
Fisher Community Livelihood Assets & Vulnerability: Sustainable Livelihood Approach (Human, Natural, Financial, Social, Physical Capitals) & Disaster Risk
Fisheries Extension, Institutions & Blue Economy: Extension Approaches, NFDB, Blue Revolution Initiatives, Primary Fisheries Co-operatives & Blockchain
Fisheries Management and Responsible Fisheries
3 Topics
Selective & Eco-Friendly Fishing Gears: Bycatch Reduction Devices (BRD), Turtle Excluder Devices (TED), Square Mesh Codends & Selectivity Curves
Fisheries Legislation, Treaties & Maritime Law: Territorial Waters, UNCLOS, High Seas Treaty, Indian Fisheries Act & Maritime Zones Act
Input, Output & Technical Management Controls: Mesh Size Regulations, Closed Fishing Seasons (Bans), Marine Fishing Regulation Acts & MSC
Fisheries Resources
3 Topics
Inland & Estuarine Fisheries Resources: Major Riverine Systems (Ganga, Brahmaputra), Coldwater Fisheries, Reservoir Fisheries & Estuaries
Aquatic Biodiversity, Endangered Species & Conservation: IUCN Red List, CITES, Marine Protected Areas, Gulf of Mannar Biosphere & Exotic Species
Global & Indian Marine Capture Fisheries: EEZ Potential, Continental Shelf Resources, Pelagic & Demersal Finfish/Shellfish Stocks
Fishing Harbour and Fleet Management
5 Topics
Marine Navigation, Electronic Instruments & Safety: Seamanship, SOLAS 1974, Port/Starboard Rules, GPS Signals, Sonar/Echo Sounders & Radar
Fishing Boat Architecture & Hull Geometry: Lines Plan Lofting, Hull Forms (Flat, V-Bottom, Round Bilge), Wave Resistance & Bulbous Bow
Vessel Hydrostatics, Capacity & Stability: Displacement, Deadweight, Gross/Net Tonnage, Midship Section, Waterlines & Metacentric Height
Marine Propulsion Systems, Propellers & Steering: Inboard/Outboard Marine Engines, Propeller Pitch, Slip, Cavitation, Rudder & Maneuvering
Fishing Harbour Engineering & Yard Operations: Harbour Layout, Breakwaters, Jetties, Slipways, Dry Docks, Marine Borers & Cathodic Protection
Fishing Technology
6 Topics
Active & Surrounding Fishing Gears: Trawls, Suberkrub Otter Boards, Beach Seines (Kambavalai), Purse Seines & Lampara Nets
Fishing Gear Design, Lofting & Calculations: Hanging Coefficients (E1, E2), Twine to Mesh Ratio (d/a), Net Scale Drawings & Cutting Rates
Bycatch Reduction Devices & Gear Selectivity: Nordmore Grids, Turtle Excluder Devices (TED), Square Mesh Codends & Flume Tank Testing
Fish Behaviour, Trolling & Hydrodynamic Devices: Burst Swimming Speed, Hydrofoil Depressors, Artificial Baits & Fish Aggregating Devices (FADs)
Fishing Gear Materials & Twine Properties: Natural vs Synthetic Fibers, Twine Construction (S/Z Twist), Breaking Strength & Netting Nomenclature
Passive & Selective Fishing Gears: Gillnets, Entangling Nets, Hook and Line / Longline Mechanics, Traps & Pots
Active
General Agriculture
6 TopicsLow and High Temperature Preservation
2 Topics
Freezing Engineering & Cryoprotection: Air Blast Freezing, Plate Freezing, Individual Quick Freezing (IQF), Cryogenic Freezing, Glazing & Freeze Denaturation
Thermal Processing & Commercial Sterilization: Canning Operations (Exhausting, Double Seaming Overlap), Thermal Death Kinetics (D, Z, F Values) & Retort Processing
Microbiological and Quality Aspects of Fish and Fishery Products
2 Topics
Chemical Additives, Contaminants & Residues: Sorbic Acid, Benzoates, Polyphosphates, Sulfites, Heavy Metals (Mercury, Lead, Cadmium) & Antibiotic Residues
International Quality Standards, HACCP & Export Regulations: Seven HACCP Principles, Codex Alimentarius, ISO 22000, FSSA 2006, MPEDA ELISA & Traceability
Refrigeration, Electrical & Equipment Engineering
4 Topics
Marine Refrigeration Cycles & Heat Load Engineering: Vapor Compression Cycle, Compressors, Condensers, Heat Load Calculations & Safety Protocols
Marine Electrical Systems & Power Distribution: Step-Up/Step-Down Transformers, Three-Phase AC Systems, DC Motors & Switchboards
Seafood Freezing Equipment & Thermodynamic Machinery: Air Blast Freezers, Contact Plate Freezers, Cryogenic Tunnel Freezers & Freeze Dryers
Thermal Dehydration & Food Processing Machinery: Mechanical Tunnel Dryers, Dehydrators, Packing Machines & Equipment Preventative Maintenance
Official PYQ Papers
Previous Year Papers of Fisheries Technology & Engineering
Practice official shift-wise question papers with answer keys and detailed explanations on the actual exam pattern.
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Previous Papers
2024
29-06-2024