Q104: Which of the following statements are TRUE" A Air conditioning... - Evaporation and Drying - Dairy Engineering- ICAR JRF/SRF 2024 | Agrigyan

General Agriculture Dairy and Food Engineering-I Evaporation and Drying Dairy and Food Engineering-II Thermal Engineering Process Equipment Design Refrigeration Engineering Instrumentation and Process Control

104

Dairy Engineering- ICAR JRF/SRF 2024

MCQ (Single Correct)

Which of the following statements are TRUE"
A Air conditioning is an example of sensible cooling
B. During air conditioning, humidity ratio decreases
C. In an evaporative cooler, cooling and dehumidification happens
D. During the working of an evaporative cooler, relative humidity increases
Choose the correct answer from the options given below:

AB.C.D AC only AC.D only B,D only

General Agriculture 20
Dairy and Food Engineering-I 26
Evaporation and Drying 11
Dairy and Food Engineering-II 11
Thermal Engineering 12
Process Equipment Design 13
Refrigeration Engineering 10
Instrumentation and Process Control 17

General Agriculture

6 Topics

Agronomy, Tillage & Field Crop Production Agricultural Entomology, Nematology & Crop Protection Soil Science, Plant Nutrition & Reclamation Cell Biology, Plant Physiology & Biochemistry Agricultural Meteorology & Climate Science Crop Genetics, Plant Breeding & IPR

Dairy and Food Engineering-I

6 Topics

Time-Dependent Rheology & Food Texture: Thixotropy, Rheopexy & Texture Profile Analysis (TPA) Fluid Mechanics & Fluid Transport: Laminar & Turbulent Flow, Reynolds Number, Friction Factor & Pressure Drops Rheology of Dairy & Food Fluids: Newtonian Fluids, Pseudoplastic, Dilatant, Bingham Plastic & Yield Stress Viscoelasticity & Mechanical Analog Models: Hookean Solids, Maxwell & Kelvin-Voigt Models, Creep & Relaxation Food Freezing Principles: Freezing Point Depression, Plank's Freezing Equation & Cryogenic Freezing Dairy Pumps Engineering: Centrifugal Pumps, Positive Displacement Pumps, Cavitation & NPSH

Evaporation and Drying

4 Topics

Novel Dehydration Systems: Vacuum Drying, Freeze-Drying (Lyophilization) & Freeze-Concentration Active Milk Evaporators: Single & Multiple Effect Evaporators, Falling Film, Scraped Surface & Boiling Point Elevation Powder Recovery & Handling: Cyclones, Bag Filters, Wet Scrubbers, Fluidized Bed Dryers & Agglomeration Vapour Separation & Energy Economy: Cyclone Entrainment Separators, Thermal & Mechanical Vapour Recompression

Dairy and Food Engineering-II

4 Topics

Gas & Vapour Permeability in Packaging: Water Vapour Transmission Rate (WVTR), Oxygen Permeability & Detector Film Membrane Transport Engineering: Microfiltration, Ultrafiltration, Nanofiltration, Reverse Osmosis & Dialysis Water Activity & Sorption Thermodynamics: Moisture Sorption Isotherms, BET & GAB Models, Hysteresis & Food Stability Microwave & Dielectric Heating: Magnetron Operation, Dielectric Loss Factor, Penetration Depth & Industrial Processing

Thermal Engineering

5 Topics

Heat Conduction & Extended Surfaces: Fourier's Law, Variable Thermal Conductivity & Fin Heat Dissipation Heat Exchanger Thermal Design: Logarithmic Mean Temperature Difference (LMTD) & Effectiveness-NTU Methods Convective Heat Transfer & Dimensionless Numbers: Nusselt, Reynolds, Prandtl, Grashof & Rayleigh Numbers Classical Thermodynamics & Availability: First & Second Laws, Exergy, Available Energy & Dead State Dynamics Gas & Air Standard Power Cycles: Otto, Diesel, Dual Combustion & Brayton Cycles Thermodynamic Efficiency

Process Equipment Design

6 Topics

Pressure Vessel Mechanics & Design Codes: Thin vs Thick Shell Criteria, ASME Section VIII & IS 2825 Standards Dairy Storage Tanks & Milk Silos: Agitated Tanks, Thermal Insulation, Wind Load Dynamics & Hygienic Standards Heat Exchanger Mechanical Construction: Shell-and-Tube, Floating Head Thermal Expansion Relief & Plate Exchangers Pressure Vessel Heads & Closures: Dished Heads (Torispherical, Ellipsoidal, Hemispherical) vs Flat Heads Stress Concentration Structural Supports for Dairy Vessels: Skirt Supports, Leg Supports, Lug/Bracket Supports & Foundation Loadings Agitation & Mixing Equipment Design: Impeller Types, Vortex Formation Prevention, Baffles & Power Number

Refrigeration Engineering

5 Topics

Vapour Compression Refrigeration Systems (VCRS): Thermodynamic Cycle, Multi-Stage Compression & Intercooling Psychrometrics & Air Conditioning: Dry Bulb, Wet Bulb, Dew Point, Relative Humidity, Contact & Bypass Factors Cold Storage & Thermal Energy Storage: Cold Room Heat Load Estimation & Ice Bank Tank (IBT) Chilled Water Systems Eco-Friendly Refrigerants & Environmental Metrics: Halocarbons, Hydrocarbons, Natural Refrigerants, ODP & GWP Vapour Absorption & Alternative Systems: Ammonia-Water, Lithium Bromide-Water Pairs & Waste Heat Utilization

Instrumentation and Process Control

7 Topics

Programmable Logic Controllers (PLC) & Industrial Automation: Architecture, Ladder Logic & SCADA Systems Process Indicators & Data Recorders: Strip Chart Recorders, Circular Chart Recorders & Digital Data Acquisition Automatic Process Control & Controller Modes: Proportional (P), Integral (PI), Derivative (PID) Controllers & Loop Tuning Process Temperature Transducers: Thermocouples (Seebeck Effect), RTD (Pt100), Thermistors & Pyrometry Pressure & Humidity Transducers: Bourdon Tubes, Diaphragm Gauges, Strain Gauges, Hair Hygrometers & Capacitive Sensors Process Flow & Level Measurement: Electromagnetic Flowmeters, Coriolis Mass Flow, Ultrasonic & Differential Pressure Final Control Elements & Process Actuators: Pneumatic Control Valves, Valve Positioners & Fail-Safe Modes

Dairy Engineering- ICAR JRF/SRF 2024

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