Naval Architecture and Marine Engineering (NM) Gate Previous year Questions Papers (2022) DOWNLOAD | Gate Naval Architecture and Marine Engineering Previous Years Question Papers pdf download
The Paper contains General Aptitude (GA) section (15 Marks) as applicable for all papers of GATE 2022. Rest of the Paper will have 85 marks covering the syllabus.
Naval Architecture and Marine Engineering (NM) Gate Previous year Questions Papers (2022) DOWNLOAD
GATE Naval Architecture and Marine Engineering (Paper Code: NM) is one of the two new papers introduced in GATE 2022. GATE Naval Architecture & Marine Engineering (NM) Syllabus 2022 comprises five sections – Engineering Mathematics, Applied Mechanics and Structures, Fluid Mechanics and Marine Hydrodynamics, Naval Architecture and Ocean Engineering, Thermodynamics and Marine Engineering. Like the other GATE papers the paper would have 65 questions of 100 marks in total out of which 55 questions worth 85 marks would be asked from the above mentioned sections. These sections encompass important topics such as – Fluid Mechanics, Stability and trim of ships, resistance and propulsion, Ship manoeuvring and motions, Marine diesel engines and other topics.
As per official announcement, IIT Kharagpur will conduct GATE 2022 on February 5-6 and 12-13, 2022. Candidates who have opted for Naval Architecture and Marine Engineering (NM) as their primary paper can also opt for any one paper among – Aerospace Engineering (AE), Civil Engineering (CE) and Engineering Sciences (XE) as their second paper. Candidates are advised to go through the details of the syllabus given below and refer to GATE2022 Preparation Tips for preparing for the exam. Since Naval Architecture and Marine Engineering is a new paper introduced this year, it is difficult to find many preparation resources, however, candidates are advised to consult their mentors/ teachers regarding the same.
What is Naval Architecture and Marine Engineering?
Naval Architecture is a branch of engineering that deals with designing and construction of naval vessels such as – ships, yachts, streamers, tug boats and other kinds of vessels as well as naval yard and harbour structures. Marine Engineering on the other hand concerns the operation of naval vessels particularly their engines and steering mechanisms as well as the maintenance and repairs of the said components of a vessel.
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GATE Naval Architecture and Marine Engineering (NM) Exam Pattern 2022
Like other papers of GATE 2022 NM Paper would consist of 65 Questions of 100 marks in total. Out of the 65 Questions 10 Questions of 15 marks would be from General Aptitude while the rest of the 55 Questions worth 85 Marks would be from Engineering Mathematics and the core subjects of NM. The exam would be of 3 hour duration with the questions being asked of the type – MCQ (Multiple Choice Questions), MSQ (Multiple Select Questions) and NAT ( Numerical Ability) questions.
The salient features of GATE NM Exam Pattern are as following –
- Mode of Examination: Online
- Duration of Exam: 3 hours
- Types of questions: MCQs, MSQs and NATs
- Total Sections: 3 Sections – General Aptitude, Engineering Mathematics and Subject-based
- No. of questions: 65 questions
- Total marks: 100 marks
- Negative marking:
- For 1 mark MCQ, 1/3 mark will be deducted for a wrong answer;
- For 2-mark MCQ, 2/3 mark will be deducted for a wrong answer;
- No negative marking for MSQs and NATs
|Section||Distribution of Marks||Total Marks||Types of questions|
|General Aptitude||5 questions of 1 mark each5 questions of 2 marks each||15 marks||MCQs|
|Naval Architecture and Marine Engineering Core Syllabus||Varies||85 marks||MCQs, MSQs and NATs|
GATE Naval Architecture and Marine Engineering (NM) Marking Scheme 2022
|Section||Number of Questions||Distribution of Marks||Total Marks|
|General Aptitude||10||(5 x 1) + (5 x 2)||15|
|Engineering Mathematics and Core Subject (Naval Architecture & Marine Engineering)||55||(25 x 1) + (30 x 2)||85|
GATE 2022 Negative Marking : Naval Architecture and Marine Engineering
|Type of Question||Correct Answer||Incorrect Answer|
|MCQ||1 or 2 Marks||⅓ for 1 mark questions|
⅔ for 2 marks questions
|MSQ/NAT||1 or 2 Marks||No Negative Marking|
GATE Naval Architecture and Marine Engineering (NM) Syllabus 2022: Important Topics
GATE Naval Architecture & Marine Engineering (NM) Syllabus 2022 comprises five sections – Engineering Mathematics, Applied Mechanics and Structures, Fluid Mechanics and Marine Hydrodynamics, Naval Architecture and Ocean Engineering, Thermodynamics and Marine Engineering. The topics included in each section are given below.
GATE Naval Architecture and Marine Engineering (NM) Syllabus 2022: Section 1 (Engineering Mathematics)
|Engineering Mathematics||Determinants and matrices, Systems of linear equations, Eigenvalues and eigenvectors. Functions, gradient, divergence, curl, chain rules, partial derivatives, directional derivatives, definite and indefinite integrals, line surface and volume integrals, theorems of Stokes, Gauss and Green. Linear, non-linear, first and higher order ordinary and partial differential equations, separation of variables. Laplace transformation, analytical functions of complex variables, Fourier series, numerical methods for differentiation and integration, complex analysis, probability and statistics|
GATE Naval Architecture and Marine Engineering (NM) Syllabus 2022: Section 2 (Applied Machines and Structures)
|Engineering Mechanics||Free-body diagrams and equilibrium; trusses and frames; virtual work; kinematics and dynamics of particles and rigid bodies in plane motion; impulse and momentum (linear and angular) and energy formulations.|
|Mechanics of Materials||Stress and strain, elastic constants, Poisson’s ratio; Mohr’s circle for plane stress and plane strain; shear force and bending moment diagrams; bending and shear stresses; torsion; Euler’s theory of columns; energy methods; theories and failure, material testing methods.|
|Vibrations||Free and forced vibration of damped and undamped systems, single and multi DOF systems.|
|Machine Design||Design for static and dynamic loading; Design of machine elements such as shafts, gears, rolling and sliding contact bearings; Joining technics such as bolting, riveting and welding.|
GATE Naval Architecture and Marine Engineering (NM) Syllabus 2022: Section 3 (Fluid Mechanics and Marine Hydrodynamics)
|Fluid Mechanics||Fluid properties; fluid statics, stability of floating bodies; Conservation laws: Mass, momentum and energy (Integral and differential form); Dimensional analysis and dynamic similarity; sources, sinks, doublets, line vortex and their superposition; Stoke’s integral theorem. Generalised Bernoulli’s equation, sources, sinks, dipole, Flow with circulation, potential flow with rotational symmetry, hydrodynamical lift, Kutta-Joukowski theorem. Vortex motion- Fundamental concepts, vortex analogy to Biot-Savart’s law, straight parallel vortex filaments, vortex sheets. Viscous flowNavier-Stokes equations, Couette flow, Plane poiseuille flow. Equation of continuity, Euler‘s equation, Bernoulli‘s equation, Viscous flow of incompressible fluids, elementary turbulent flow, boundary layer, flow through pipes|
|Boundary layer theory||Prandtl’s boundary layer equations, criterion for separation, Blasius solution, Skin friction, displacement thickness, momentum thickness, Turbulent boundary layer, Boundary layer control. Airfoils- Lift, drag, circulation, pressure distribution-theory of thin aerofoils, wings of infinite and finite span, circulation distribution, Cavitation|
|Hydrodynamics||Vorticity and Kelvin’s theorem, Potential flow theory, Sources, Sinks and Doublets, hydrodynamic forces in potential flow, D’Alembert’s paradox, added-mass, slender-body theory, hydrodynamic model testing, scaling laws, application of potential theory to surface waves, energy transport, wave/body forces, linearised theory of lifting surfaces.|
GATE Naval Architecture and Marine Engineering (NM) Syllabus 2022: Section 4 (Naval Architecture and Ocean Engineering)
|Ship geometry and physical fundamentals||Archimedes’ principle, buoyancy and weight of ship, laws of flotation, heel and trim, stable and unstable equilibrium of ships, importance of streamlined hull shape, ship main particulars, hydrostatic calculations,|
|Stability and trim of Ships||Statical stability at small angles of heel, Inclining experiment. Shift of centre of gravity due to addition or removal of mass, transverse movement of mass and effect, Free surface effect, Effect of suspended mass, Stability at large angles of heel, angle of loll, curves of statical stability, dynamical stability, Probabilistic and deterministic Damage Stability Different Characteristic curves of dynamic stability. Floodable length calculations and curves. Loss of stability due to grounding, docking stability.|
|Resistance & Propulsion||Components of ship resistance, form factor, hull roughness, model testing and ship resistance prediction methods, tank wall effects, determination of ship resistance different series test results, resistance of advanced vehicles, appendage and added resistance. Geometry of screw propeller, propeller theories, hull-propeller interactions, different propulsive efficiency definitions. Propeller cavitation and effects. Propeller design and series. Open water and selfpropulsion model tests. Different types of propellers and their working principles. Propeller material, strength and manufacturing.Unconventional propellers|
|Ship Manoeuvring and Motions||Ship path keeping and changing, equations of motion, linearised equations and control fixed stability indexes, model tests. Stability and control in the horizontal and vertical planes – definitive manoeuvres and sea trials. Rudder hydrodynamics, design and operation. Influence of propeller, hull, appendages etc. on rudder performance. Experimental methods for the determination of hydrodynamic derivatives.|
|Ocean waves||Regular, irregular, trochoidal. Wave spectrum, encounter frequency. Types of ship motions, coupled and non-coupled motions, equations of motion. Dynamic effects of ship motion in seaway. Different ship motion stabilisers – passive and active. Different numerical and experimental methods to determine ship motions – strip theory, BEM, FEM. Seakeeping features of high performance marine vehicles.|
|Ship Structures & Strength||Shipbuilding materials, joining techniques, ship structural and framing systems – bottom, side, deck, bulkhead, end structures, and structural connections. Primary and secondary structural members, superstructure, hatch covers, machinery foundations, cargo handling systems and support structures Loads acting on ships in seaway, longitudinal and transverse strength considerations and estimation methods. Strength of hull girder, stiffened plate analysis, torsion of hull girder, deformation and stresses, local strength analysis; Reliability analysis and ultimate strength of hull girder, structural vibrations, fatigue and fracture.|
|Physical Oceanography||Physical properties of seawater, Different types of ocean waves – tides and wind waves, and their importance. Offshore Structures: Fixed offshore platforms – Jackets, Gravity platforms; Floating platforms – semi-submersibles, jack-ups, TLPs, FPSOs; Mooring, station keeping. Port and Harbour Engineering: Ports and Harbours, Port structures – Jetties, Dolphins, Liquid berths, Dredging, Navigation|
GATE Naval Architecture and Marine Engineering (NM) Syllabus 2022: Section 5 (Thermodynamics and Marine Engineering)
|Thermodynamics||First law of thermodynamics – Closed system undergoing a cycle; closed system undergoing a change of state; Internal energy of a system; Expansion work; Process using ideal gas – constant pressure, constant volume, isothermal; adiabatic and polytropic process -work done and heat added in different process; First law applied to one – dimensional steady flow process, flow energy, steady flow energy equation (ID). Second law of Thermodynamics – Different statements; Reversible and irreversible process; Corollaries of second law – Absolute temperature scale; Carnot cycle – Carnot engine, refrigerator and heat pump. Clausius inequality and definition of entropy, change of entropy of an ideal gas; Gas power cycles and I.C.Engines; Gas power cycles: Carnot cycle, Brayton cycle, Erricson cycle, Sterling cycle etc.; Air standard cycles- Otto- Diesel, Dual and Joule cycle; Evaluation of thermal efficiency and mean effective pressure; Internal Combustion engine – Classification of I.C. engines -Principle of operation of spark Ignition and Compression Ignition engines both two stroke and four stroke; Stages of combustion in S.I. and C.I. engines Knocking and detonation-factors controlling knock and detonation, methods of preventing Knocking and detonation; Refrigeration – principle of operation of Simple vapour compression system, Comparison with vapour compression systems; Air conditioning principles – Sensible heating and cooling, Humidification and dehumidification, Cooling and humidification, Cooling and dehumidification- Heating and humidification, Heating and dehumidification, Adiabatic mixing of air streams –cooling and heating load calculation.|
|Marine Diesel Engines||General engine principles, Low speed and medium speed diesel engines, Two and Four stroke engines, Scavenging and turbocharging, Fuel oil system, Lubricating oil systems, cooling systems, torque and power measurement, Starting air systems and reversing systems, controls and safety devices, Couplings and Gearboxes, Specific Fuel Consumption. Waste heat recovery system, MARPOL regulations and Energy Efficiency Design Index (EEDI), Ship Energy Efficiency Management Plan (SEEMP).|
|Marine Steam Turbines||Types of turbines, compounding, reheat, turbine construction, rotors, blades, casing, Gland sealing, diaphragms, nozzles, bearings etc. Lubrication systems, expansion arrangements, Gearings. Marine gas turbines – fundamentals of G.T, Structure of gas turbines, gearing, operational features, controls, combined cycles. Nuclear propulsion –physical principles of the operation of nuclear reactors – use of nuclear propulsion on seagoing vessels, Electrical Propulsion,|
|Marine Boilers||Types – fire tube, water tube boilers, Package boilers, Cochran Boilers, Composite boilers, steam to steam generators, double evaporation boilers, exhaust gas heat exchangers, auxiliary steam plant systems, exhaust gas boilers, composite boilers. Boiler mounting, combustion, feed system, feedwater treatment.|
|Engine Dynamics||Torsional vibration of engine and shafting, axial shaft vibration, critical speeds, engine rating, rating corrections, trial tests etc. Relationship of engine to the propeller classification society rules on engine construction, Engine room arrangement. Automation of ship propulsion plants, Maintenance requirements and reliability of propulsion plants.|
|Marine Auxiliary Machinery & Systems||Different types of pumps and piping systems in ships – hot water, drinking water, cooling water and seawater, fuel oil systems, lubricating oil system filters, coolers, centrifuges, purifiers and clarifiers, bilge and ballast systems, sewage disposal, oily water separator, air compressors, boilers, heat exchangers, waste heat recovery systems; Heat, ventilation and air conditioning systems; Dech machinery and cargo handling systems; Propulsions and steering gear systems.|
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What is the scope after GATE Naval Architecture and Marine Engineering (NM) 2022
Majority of students undertaking GATE 2022 NM exam will be aiming for admissions into M.Tech courses at various IITs and NITs. All in all, GATE Results have the following scope:
- Admissions to M.Tech/ M.E related Courses : First and foremost, GATE 2022 NM scores can be used for gaining admissions into the related courses in the prestigious IITs, NITs and private institutes.Some examples are : M.Tech in Naval Architecture from IIT Kharagpur, M.Tech in Marine Engineering from IIT Mumbai ,M. Tech in Marine Engineering from NIT Karnataka, M. Tech in Marine Engineering from NIT Calicut, M.Tech in Marine Engineering at Tolani Maritime and others.
- Recruitment at PSUs: Several PSUs of India such as HAl, DRDO, ONGC and others hire on the basis of GATE scores. Since, Naval Architecture and marine Engineering is a paper new to GATE 2022, details of the PSUs hiring on the basis of GATE score is unavailable, however it is expected that PSUs like DRDO, Shipping Corporation of India, Hindustan Shipyard Ltd , Hoggly Doc and Port Engineers Ltd and other would hire marine engineers and architects on the basis of their GATE scores.
- Recruitment in Merchant Navy: An Engineer is an indispensable part of a ship’s crew, needed to keep the engine up and running during the long journeys. As such, the top shipping companies like – Essar Shipping, NYK, CMA CGM Group, Cosco and others are ready to pay top salaries to the talented marine engineers and who can be more talented marine engineers than GATE NM qualified engineers.
- Recruitment at Shipyards: Naval Architects are the backbone of any shipyard. Whether a ship is being built or disassembled a talented naval Architect is always in need at the shipyards of India – Hooghly, Cochin, Visakhapatnam and others.A good GATE NM scorecard would be helpful in gaining employment at shipyards located at these places.
Advantages of solving GATE Previous Question Papers
- By solving GATE previous year question papers, candidates will be able to get an idea about the nature of questions that will be asked in the exam.
- Also, by solving previous years GATE question papers, students will be able to establish how much weightage is given to topics and sections.
- Apart from getting acquainted with the nature of questions and weightage to topics, candidates appearing for the entrance exam can improve on other important attributes relating to the exam such as management of time, ability to solve tricky problems, keen eye for details, speed of solving questions and a lot more.
- Along with solving the GATE previous year question papers, candidates are also advised to refer to the GATE syllabus 2022 to get in-depth knowledge of topics and subjects from where the questions were asked in the exam.
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