Rajasthan State Road Transport Corporation
Engineering Category: Automobile, Mechanical and Electrical Engineering Stream
PART-B MARKS-40
1. Engineering Thermodynamics:
i) First Law of Thermodynamics: First law energy equations for closed and open systems under steady flow and unsteady flow condition; Application of First law energy equation to thermodynamics system components such as boiler, turbine, compressor, nozzle, expander, pump, condenser, First law efficiency. Second Law of Thermodynamics; Reversible irreversible processes; Entropy; Camot cycle
2. Heat Transfer/Internal combustion Engines:
i) Internal Combustion Engines: Ideal and actual cycles of operation, fuels, Combustion and abnormal combustion in SI and CI engines and combustion chambers, carburetors and electronically controlled fuel injection systems for SI engines, fuel injection systems for diesel engines, lubrication systems, cooling systems, supercharging of engines, scavenging, engine performance, testing and exhaust emission characteristics, control of exhaust pollution, current developments including electronic monitoring and control of engines
ii) Introduction to combustion processes: Combustion in premixed and diffusion flames — Combustion process in IC engines.
iii) Normal, abnormal combustion in SI Engines: Stages of combustion-Flame propagation-Rate of pressure rise-Cycle to cycle variationabnormal combustion -Theories of detonation -Effect of engine operating variables on combustion.
iv) Combustion and knock in CI Engines: Droplet and spray combustion theory – stages of combustion – delay period – peak pressure – Heat release – Gas temperature – Diesel knock.
iv) Heat Transfer in IC Engines: Basic definitions – Convective heat transfer – Radiative heat transfer-Heat transfer, temperature distribution and thermal stresses in piston- Cylinder liner-cylinder head – fins and values.
3. Alternate Fuels and Energy Systems:
i) Introduction: Estimation of petroleum reserve -Need for alternate fuel – Availability and properties of alternate fuels -general use of alcohols – LPG – Hydrogen – Ammonia, CNG, and LNG – Vegetable oils and biogas – merits and demerits of various alternate fuels.
ii) Alcohols: Properties as engine fuel, alcohols and gasolene blends, performance in SI engine. Methanol and gasoline blends – Combustion characteristics in engines -emission characteristics.
iii) Natural Gas. LPC. Hydrogen and Biogas: Availability of CNG, properties, modification required to use in engines -performance and emission, characteristics of CNG using LPG in SI & Ci engines. Performance and emission for LPG – Hydrogen – Storage and handling, performance and safety aspects.
iv) Vegetable oils: Various vegetable oils for engines – Esterification – Performance in engines -Performance and emission characteristics.
v) Electric and solar powered vehicles: Layout of an electric vehicle – Advantage and limitations – specifications – system component – Electronic control system – High energy and power density batteries – hybrid vehicle.
4. Machine Design:
i) Materials: Properties; Design for strength: Allowable stresses, factor safety; Stress concentration. Introduction of various design considerations likes strength, stiffness, weight,
cost, space etc; Concept of fatigue; Design of welded joints under direct loading, eccentric loading; Design of riveted joint, eccentrically loaded riveted joints. Design of screwed joints:
Initial stresses, stress due to combined forces design of cylinder covers, bolts of uniform strength, bolted joints under eccentric loading. Design of helical and leaf springs. Design of
shafts under combined loading. Design of brakes and clutches.
ii)Vehicle frame and Suspension: Study of loads – moments and stresses on frame members, Computer aided design of frame for passenger and commercial vehicle – Computer aided design of leaf springs – coil springs and torsion bar springs.
iii) Front Axle and Steering systems: Analysis of loads – moments and stresses at different sections of front axle, Determination of bearing loads at Kingpin bearings, Wheel spindle bearings, Choice of bearings, Determination of optimum dimensions and proportions for steering linkages ensuring minimum error in steering.
iv) Clutch: Torque capacity of clutch, Computer aided design of clutch components, Design details of roller and sprag type of clutches.
v) Gear Box: Computer aided design of three speed and four speed gear boxes.
vi) Drive Line and Rear Axle: Computer aided design of propeller shaft, Design details of final drive gearing, Design details of full floating semi-floating and three quarter floating rear shafts and rear axle housings.
5. Automobile Engineering: Layout of different kinds of vehicles, gear boxes including automatic transmission systems, clutches including fluid couplings, torque converters, rear axle and final drive – differential, front axle construction, steering systems, suspension systems, tyres, springs and shock absorbers, brakes and their actuations, ignition systems recent developments – Vehicle electrical & electronic systems. Automotive pollution and its control strategies.
6. Refrigeration & Air-conditioning:
a) Air Conditioning Fundamentals: Basic air conditioning system – Location of air conditioning components in a car – Schematic layout of a refrigeration system- Compressor components – Condenser and high pressure service ports – Thermostatic expansion value – Expansion value calibration – Controlling evaporator temperature – Evaporator pressure regulator — Evaporator temperature regulator.
b) Air conditioner – Heating system.
Automotive heaters – Manually controlled air conditioner – Heater system – Ford automatically controlled air conditioner and heater systems – Automatic temperature control – Air conditioning protection – Engine protection.
c) Air conditioning service: Air conditioner maintenance and service — Servicing heater system – Removing and replacing components – Trouble shooting of air controlling system — Compressor service.
7. Maintenance Management: Role of materials management techniques. in material’s productivity improvement, cost reduction and value — improvement. Purchase management. Incoming material control. Acceptance sampling and inspection. Vendor rating systems. Inventory management. Various inventory control models. Material requirement planning systems. Discrete lot sizing
techniques. Algorithms for multi-product lot sizing with constraints. Commodities. Design of inventory distribution systems. Inventory management in Kanban and just-in-time.
8. Fleet Management:
a) Management Training and Operations: Basic principles of supervising – Organising time and people – Job instruction training – Training devices and techniques – Driver and mechanic hiring – Driver checklist – Lists for driver and mechanic – Trip leasing – Vehicle operation and types of operations.
b) Vehicle Maintenance: Scheduled and unscheduled maintenance – Planning and scope – Evaluation of PMI programme – Work scheduling – Overtime – Breakdown analysis – Control of repair backlogs – Cost of options.
c) Vehicle parts. supply management and Budget.: Cost of inventory – Balancing inventory cost against down time – Parts control – Bin tag systems – Time Management – Time record keeping – Budget activity – capital expenditures – Classification of vehicle expenses – fleet management and data processing – Data processing systems- Software Model -Computer controlling of fleet activity – Energy management.
9. Modern Vehicle Technology:
a) Trends in Power Plants: Hybrid vehicles – Stratified charged/learn burn engines – Hydrogen engines- battery vehicles – Electric propulsion with cables – Magnetic track vehicles.
b) Suspension brakes and safety: Air suspension – closed ioop suspension – antiskid braking system, retarders, regenerative braking safety cage – air bags – crash resistance – passenger comfort.
c) Noise and Pollution.
Reduction of noise – Internal & External Pollution Control through alternate fuels / power plants – Catalytic converters and filters for particulate emission.
d) Vehicle Operation and Control.
Computer control for pollution and noise control and for fuel economy – transducers and actuators – Information technology for receiving proper information and operation of the vehicle like optimum speed and direction.
e) Vehicle automated tracks.
Preparation and maintenance of proper road network – National highway network with automated roads and vehicles – Satellite control of vehicle operation for safe and fast travel.
Basic Electrical engineering: Electrical Measurements, Concepts of current, voltage, resistance, power and energy, their units, ohm’s law.
2. Circuit Law: Kirchooff’ s law, Network theorems, Electro-magnetism, emf, reluctance, magnetic circuits, Electro-magnetic induction, self and mutual inductance. AC fundamentals, instantaneous, peak, RMS and average values of alternating waves, equation of sinusoidal wave form, series and parallel AC circuits, Resonance.
3. Measurement and Measuring Instruments: Analog and digital types meter, Moving coil and moying iron ammeters and voltmeters, Extension of range, Wattmeters, Multimeters, megger, transduccers.
4. Electrical Machines: Basic principles of DC Motors, generators, their characteristics, Speed control and starting of Dc Motors, loses and efficiency of DC Machines. 1-Phase and 3-Phase Transformers: Principles of operation, equivalent circuit, voltage regulation, open circuit and short circuit, efficiency and auto-transformers. Synchronous Machines: Generation of 3-phase emf, armature reaction, Voltage regulation, parallel operation of two alternators, – synchronizing, starting and applications of synchronous motors.
3-Phase Induction Motor: rotating magnetic field, equivalent circuit, torque-speed characteristics, starting and speed control of 3-phase induction motors, Fractional kW motors, i-phase induction motors, AC series motor, and reluctance motor.