SSC JE 2024 Exam - Paper 1 Result (Out), Answer key (Released), Cutoff

General awareness: Unit 01

General awareness: Unit 02

General awareness: Unit 03

General engineering: Civil & structural: Unit 01

• Building materials, estimating, costing and valuation, surveying, soil mechanics, hydraulics, irrigation engineering, transportation engineering, environmental engineering

General engineering: Civil & structural: Unit 02

• Theory of structures, concrete technology, RCC design, steel design

General engineering: Electrical: Unit 01

• Basic concepts, circuit law, magnetic circuit, AC fundamentals, measurement and measuring instruments, electrical machines, fractional kilowatt motors and single phase induction motors, synchronous machines, generation, transmission and distribution
• Estimation and costing, utilization and electrical energy, basic electronics

General engineering: Mechanical: Unit 01

• Theory of machines and machine design, engineering mechanics and strength of materials, properties of pure substances, 1st law of thermodynamics, 2nd law of thermodynamics, air standard cycles for IC engines, IC engine performance, IC engines combustion
• IC engine cooling & lubrication, Rankine cycle of system, boilers, classification, specification, fitting & accessories, air compressors & their cycles, refrigeration cycles, principle of refrigeration plant, nozzles & steam turbines
• Properties & classification of fluids, fluid statics, measurement of fluid, pressure, fluid kinematics, dynamics of ideal fluids, measurement of flow rate, basic principles, hydraulic turbines, centrifugal pumps, classification of steel

General engineering (electrical engineering): Unit 01

• Concepts of resistance, inductance, capacitance, and various factors affecting them, concepts of current, voltage, power, energy, and their units

General engineering (electrical engineering): Unit 02

• Kirchhoff's law, simple circuit solution using network theorems

General engineering (electrical engineering): Unit 03

• Concepts of flux, MMF, reluctance, different kinds of magnetic materials, magnetic calculations for conductors of different configuration example straight, circular, solenoidal, etc, electromagnetic induction, self and mutual induction

General engineering (electrical engineering): Unit 04

• Instantaneous, peak, RMS and average values of alternating waves, representation of sinusoidal wave form, simple series and parallel AC circuits consisting of RL and C, resonance, tank circuit poly phase system-star and delta connection, 3 phase power
• Dc and sinusoidal response of r-land r-c circuit

General engineering (electrical engineering): Unit 05

• Measurement of power (1 phase and 3 phase, both active and re-active) and energy, 2 wattmeter method of 3 phase power measurement, measurement of frequency and phase angle, ammeter and voltmeter (both moving oil and moving iron type)
• Extension of range wattmeter, multimeters, megger, energy meter, AC bridges, use of CRO, signal generator, CT, PT and their uses earth fault detection

General engineering (electrical engineering): Unit 06

• DC machine: Construction, basic principles of DC motors and generators, their characteristics, speed control and starting of DC motors, method of braking motor, losses and efficiency of DC machines
• 1 phase and 3 phase transformers: Construction, principles of operation, equivalent circuit, voltage regulation, OC and SC tests, losses and efficiency, effect of voltage, frequency and wave form on losses
• 1 phase and 3 phase transformers: Parallel operation of 1 phase/ 3 phase transformers, auto transformers
• 3 phase induction motors, rotating magnetic field, principle of operation, equivalent circuit, torque-speed characteristics, starting and speed control of 3 phase induction motors, methods of braking
• Effect of voltage and frequency variation on torque speed characteristics, fractional kilowatt motors and single phase induction motors: Characteristics and applications

General engineering (electrical engineering): Unit 07

• Generation of 3-phase EMF armature reaction, voltage regulation, parallel operation of two alternators, synchronizing, control of active and reactive power starting, and applications of synchronous motors

General engineering (electrical engineering): Unit 08

• Different types of power stations, load factor, diversity factor, demand factor, cost of generation, inter-connection of power stations power factor improvement, various types of tariffs, types of faults
• Short circuit current for symmetrical faults switchgears-rating of circuit breakers, principles of arc extinction by oil and air, HRC fuses, protection against earth leakage/ over current, etc, Buchholz relay
• Merz-price system of protection of generators and transformers, protection of feeders and bus bars lightning arresters, various transmission and distribution system, comparison of conductor materials, efficiency of different system cable
• Different type of cables, cable rating, and derating factor

General engineering (electrical engineering): Unit 09

• Estimation of lighting scheme, electric installation of machines and relevant IE rules earthing practices, and IE rules

General engineering (electrical engineering): Unit 10

• Illumination, electric heating, electric welding, electroplating, electric drives and motors

General engineering (electrical engineering): Unit 11

• Working of various electronic devices example P-N Junction diodes, transistors (NPN and PNP type), BJT and JFET simple circuits using these devices

General engineering (mechanical engineering): Unit 01

• Concept of simple machine, four bar linkage and link motion, flywheels and fluctuation of energy, power transmission by belts-V-belts and flat belts, clutches-plate and conical clutch, gears-type of gears, gear profile, and gear ratio calculation
• Governors-principles and classification, riveted joint, cams, bearings, friction in collars and pivots

General engineering (mechanical engineering): Unit 02

• Equilibrium of forces, law of motion, friction, concepts of stress and strain, elastic limit and elastic constants, bending moments and shear force diagram, stress in composite bars, torsion of circular shafts, bucking of columns
• Euler's and Rankin's theories, thin walled pressure vessels

General engineering (mechanical engineering): Unit 03

• Properties of pure substances: P-V and P-T diagrams of pure substance like H2O, introduction of steam table with respect to steam generation process; definition of saturation, wet and superheated status, definition of dryness fraction of steam
• Properties of pure substances: Degree of superheat of steam H-S chart of steam (Mollier's chart)
• 1st law of thermodynamics: Definition of stored energy and internal energy, 1st law of thermodynamics of cyclic process, non flow energy equation, flow energy and definition of enthalpy, conditions for steady state steady flow
• 1st law of thermodynamics: Steady state steady flow energy equation
• 2nd law of thermodynamics: Definition of sink, source reservoir of heat, heat engine, heat pump and refrigerator; thermal efficiency of heat engines and coefficient of performance of refrigerators
• 2nd law of thermodynamics: Kelvin-Planck and Clausius statements of 2nd law of thermodynamics, absolute or thermodynamic scale of temperature, Clausius integral, entropy, entropy change calculation of ideal gas processes Carnot cycle and Carnot efficiency
• 2nd law of thermodynamics: PMM-2; definition and its impossibility
• Air standard cycles for IC engines: Otto cycle; plot on P-V, T-S planes; thermal efficiency, diesel cycle; plot on P-V, T-S planes; thermal efficiency. IC engine performance, IC engine combustion, IC engine cooling and lubrication
• Rankine cycle of steam: Simple Rankine cycle plot on P-V, T-S, H-S planes, Rankine cycle efficiency with and without pump work boilers; classification; specification
• Rankine cycle of steam: Fittings and accessories-fire tube and water tube boilers air compressors and their cycles refrigeration cycles; principle of a refrigeration plant; nozzles and steam turbines

General engineering (mechanical engineering): Unit 04

• Properties and classification of fluid: Ideal and real fluids, Newton's law of viscosity, Newtonian and Non-Newtonian fluids, compressible and incompressible fluids
• Fluid statics: Pressure at a point
• Measurement of fluid pressure: Manometers, U-tube, inclined tube
• Fluid kinematics: Stream line, laminar, and turbulent flow, external and internal flow, continuity equation
• Dynamics of ideal fluids: Bernoulli's equation, total head; velocity head; pressure head; application of Bernoulli's equitation
• Measurement of flow rate basic principles: Venturi meter, pilot tube, orifice meter
• Hydraulic turbines: Classifications, principles
• Centrifugal pumps: Classifications, Principles

General engineering (mechanical engineering): Unit 05

• Classification of steels: Mild steal and alloy steel, heat treatment of steel, welding-Arc welding, gas welding, resistance welding, special welding techniques that is TIG, MIG, etc (brazing and soldering), welding defects and testing; NDT
• Classification of steels: Foundry and casting-methods, defects, different casting processes, forging, extrusion, etc, metal cutting principles, cutting tools, basic principles of machining with-(i) lathe, (ii) milling, (iii) drilling, (iv) shaping
• Classification of steels: Basic principles of machining with-(v) grinding, machines, tools, and manufacturing processes