dgll.nic.in Syllabus Navigational Assistant Grade III, Technician, Radio Technician

Organisation : Directorate General of Lighthouses and Lightships DGLL
Recruitment Exam : Navigational Assistant Grade III, Technician (Electronics), Technician (Electrical), Technician (Diesel), Technician (General) And Radio Technician
Announcement : Syllabus
Website : https://www.dgll.nic.in/recruitment/examination-procedure-%26-syllabus

DGLL Technician (Diesel) Syllabus

Properties of metals :
Introduction to basic metallic properties like elasticity, plasticity, ductility, brittleness, toughness, hardness, Ferrous Metals, Non Ferrous Metals/Alloys, Nonmetallic Materials
Refrigeration & Airconditioing System :
Different types of refrigeration principles and refrigerants. Working of domestic refrigerator. Working of Window/Split type/tower type AC system.

IC Engine :
Engine classification, Engine cycle, C.I. engine combustion, S.I. engine combustion, Engine structure, Fuel admission system, Air intake system, exhaust system, Engine cooling system, Lubrication system, Engine starting system, Working of two stroke and four stroke engines.
Fuel, combustion and lubrication :
Diesel, Petrol and lubricating oils properties Introduction to common fuels – solid, liquid and gases and their composition. Combustion of fuelstheir higher and lower calorific values. Combustion equations for carbon, sulphur, hydrogen and their simple compounds. Calculation of minimum amount of air required for complete combustion. Combustion analysis on mass basis and on volume basis. Heat carried away by flue gases. Analysis of flue gases by Orsat apparatus. Simple numerical problems Idea of specific properties of liquid fuels such as detonation, knock resistance (cetane and octane numbers), viscosity, solidification point, flash point and flame point.
Components and terms related to engine:
Components of Diesel engines like cylinder block, cylinder head, piston, intake valve, piston rings, exhaust valve, piston pin, crank shaft, connecting rod, timing gears, camshaft, Description and function of fly wheel and vibration damper (AVM), Engine related terms like bore, stroke, TTC, BDC, Revolution, compression ratio, cycle etc.
WELDING:
Definition, Weldedge preparation, Introduction to various welding processes with procedure equipments and applications such as (i) Electric arc welding. (ii) Resistance welding-Spot welding, Flash butt, Percussion welding. (iii) Thermit welding. (iv) Carbon arc welding (v) Metal-Inert-Gas welding (MIG). (vi) Tungsten arc welding (TIG).
Brazing of metals:
Preparation for brazing and procedures for brazing.
Measuring instruments :
System of measurement, description care and use of Measuring instruments like Vernier caliper, Micro meter/screw gauge, feeler gauge, injector caliberator, dial bore gauge, dial indicators etc.
Machine tools : drill, mill, grinding wheel, hacksaw blade, cutting tool etc.
Fire and fire fighting :
Different types of Fire and fire fighting techniques
Fasteners : nut, bolt, screws etc
Pumps : Operation of monoblock, central fugal, immersion
Basic electrical : Basics of alternator and batteries

Radio Technician Syllabus

Electronic components & materials:
Conductors, semiconductor & insulators, magnetic materials, jointing & cleaning materials for U/G copper cables & OFC; cells and batteries (chargeable and non-chargeable) relays, Switches, MCB & Connectors.
Electronic Devices and circuits :
PN junction diodes, Thyristor; Diode and triode circuits; junction transistors; Amplifiers; oscillator; multivibrator; counters; rectifiers; inverter and UPS.
Digital Electronics :
Number system & Binary codes; Boolean Algebra & Logic gates; Combinational & Sequential logic circuits, A/D & D/A converter, counters; memories
Linear Integrated circuit :
Introduction to operational Amplifier; Linear applications; Non-Linear applications; Voltage regulators, Timers, Phase lock loop.
Microprocessor and Microcontroller :
Introduction to microprocessor, 8085 microprocessor working, Assembly language programming; peripherals & other microprocessors; microcontrollers.
Electronic Measurements :
Measuring systems; basic principles of measurement, range extension methods, cathode ray oscilloscope, LCD, LED panel; Transducers.
Communication Engineering :
Introduction to communication, analog and digital Modulation techniques, multiplexing techniques, OFC, Fundamentals of Public Address system, Electronic exchange, Cellular and Satellite Communication. Basic knowledge of Radio transreceiver, operation of VHF sets, tranreceivers.
Wave Propogation :
Ground wave, sky wave, space wave, space diversity, skip distance, standing wave ratio, transmission line characteristics Antena Basic knowledge of antenna theory, knowledge of VSAT, microwave antenas, T antenna and various types of antenas.
RADAR :
Function, block diagram, various modules inside the radar, radar antenas, radar ranges, and other terms related to navigational radars.
Data communication and network :
Introduction to data communication, Hardware and interface, introduction to networks and networking devices, local area network and wide area network, internetworking.
Computer programming :
Programming concepts, fundamentals of „C‟ and C++; operators in “C” and C++, Control statements, functions, Array string & Pointes, File structure, Data structure and DBMS.
Basic Electrical Engineering :
DC Circuits, AC Fundamentals; Magnetic, Thermal and chemical effects of Electric current; Earthing – Installation, Maintenance, Testing Equipments Knowledge of Voltage stabilizers, Isolation transformers, AMF panel for generators, Different types of timers and switching circuits.
Solar power plant :
Basic knowledge of solar power plants, different types of Solar panels, MPPT, Mini Charge Regulators, solar power conditioning units etc.
Basic knowledge of GPS, marine lanterns, Racons, DGPS, NAVTEX, AIS, etc.

Scheme of Examination

** The examination shall be multiple choice question (MCQ). There will be 100 questions of one mark each from the following subjects.
Sl.No | Subject | Marks
1 General knowledge/Aptitute test (numerial aptitude/qualitative aptitude/quatitative aptitude/reasoning etc.) 40
2 Technical* 60
Total 100
Note: * Technical subject will be varying as per the post.

** There will be negative mark in written examination and 1/3rd of the mark shall be deducted for each wrong answer. However, no marks will be deducted for the questions which were kept unattended.
** The qualified candidates has to under go a trade test which will be of qualifying in nature. The committee shall fix qualifying standard in the trade test.
** The candidate who qualify in the trade test will be considered for final selection on the basis of their merit in the written examination.
** Mobile phones, Calculators or any other devices will not be allowed in the examination hall.
** The qualifying/cut off marks will be decided by the concerned recruitment committee constituted by various Directorates.

Download Syllabus

Syllabus For Technical Subject For Recruitment To The Posts Of Navigational Assistant Grade III, Technician (Electronics), Technician (Electrical), Technician (Diesel), Technician (General) And Radio Technician – http://www.syllabus.gen.in/uploads/pdf2024/3670-s.pdf