SSC
JE exam is a major exam and
it is conducted annually to recruit suitable engineers..
In this session, we will look into some of the important topics for SSC JE
Mechanical Engineering.
SSC JE Mechanical Engineering: Important
Topics:
I.
Theory of Machine and Machine design comprising 15 questions
a.
Machine Theory : 8
b.
Machine Design : 7
II.
Strength of material and Engineering Mechanics comprising 15
questions
III.
Thermal Engineering comprising 30 questions
a.
Basic Thermodynamics : 11
b.
IC Engines : 13
c.
Boilers : 2
d.
Steam Turbines/ Refrigeration : 4
IV.
Production Engineering comprising 10 questions
a.
Welding : 3
b.
Casting : 2
c.
Molding : 1
d.
Material Science : 4
V.
Fluid Mechanics & Machinery comprising 30 questions
a.
Properties & Types of Fluid : 5
b.
Fluid statics : 2
c.
Kinematics of Fluid : 9
d.
Fluid Dynamics : 5
e.
Fluid pressure measurement and flow rate : 5
f.
Hydraulic Turbine and Centrifugal pumps : 4
Let’s look into these
topics in detail.
·
Theory of Machines & Machine Design:
This topic covers the concepts of a simple machine, four bar
connection and movement of the link; Flywheels and energy fluctuations,
transmission of power via belts such as V-belts and Flat belts; clutches
comprising plate and conical clutch; Gear types like Gear profile and Gear
ratio calculation, Governors comprising Principles and classification; welded
joint; Cams, Bearings, Friction in collars and axis.
·
Strength of Materials and Engineering Mechanics:
The subtopics included are: Equilibrium of forces; Law of motion,
Friction, Stress and strain concepts; Elastic limit and constants; bending
moments; cutoff force diagram; Stress in composite bars; twisting of circular
shafts; Bucking of columns based on theories of Euler and Rankin; thin walled
pressure vessels.
·
Thermal Engineering:
Pure Substances Properties:
P-V and P-T diagrams of substances such as H2O, Steam table
concept based on
steam generation process; Saturation; wet and superheated status; Dryness fraction
of steam; Superheat degree of steam; H-s form of Steam chart or the Mollier’s
Chart.
1st Law of Thermodynamics:
The topic comprises Stored and internal energy definitions; first
law of
Thermodynamics on Cyclic Process; Equation of Non-flow energy; Energy Flow and
Enthalpy terminology; Steady State and Steady Flow conditions and The Equation
for Steady State and Steady Flow.
2nd Law of Thermodynamics:
Sink definition; Source Reservoir of Heat; Heat Engine; Heat Pump
and Refrigerator;
Thermal efficiency of heat engines & co-efficient of performance of
Refrigerators;
Statements of 2nd Law
of Thermodynamics by Kelvin-Planck and Clausius; Absolute or
Thermodynamic scale of temperature; Clausius Integral; Entropy change
calculation of
ideal gas processes. Carnot Cycle & Carnot Efficiency; PMM-2; definition
and its
impossibility.
Air standard cycles for IC Engines:
Otto cycle; cycle plot on P-V, T-S and h-s planes; Thermal efficiency;
Diesel Cycle;
Plot on P-V, T-S planes; IC Engine Performance; IC Engine Combustion; IC Engine
Cooling and Lubrication.
Rankine Cycle of Steam:
Rankine cycle plot on P-V, T-S and h-s planes; Rankine Cycle
efficiency, with and
without pump work. Boilers; Classification; Specification;
Fittings & Accessories
comprising fire tube and water tube boilers; Air Compressors and the cycles;
Refrigeration cycles; Refrigeration Plant Principle; Nozzles and Steam
Turbines.
·
Fluid Mechanics & Machinery:
Properties & Classification of Fluid:
Fluids- Ideal and Real; Newton’s Law of Viscosity; Newtonian and
Non-Newtonian
fluids; Compressible and Incompressible fluids. Fluid statics comprising
Pressure at a
point; Fluid pressure measurement including Manometers, U-tube, Inclined tube.
Fluid
Kinematics including Stream line, Laminar and Turbulent flow, Internal and
External
flow, Continuity equation. Dynamics of ideal fluids including Bernoulli’s
equation; Total
Head, Velocity head; Pressure Head; Application of Bernoulli’s equation;
Measurement of flow rate Basic Principles; Venturimeter, Pilot Tube, Orifice
meter;
Hydraulic Turbines including Classifications, Principles; Centrifugal Pumps
comprising
Classifications, Principles, Performance.
Production Engineering:
Classification of Steels:
This subtopic includes Mild Steel & Alloy Steel, Heat
Treatment of steel; Welding
comprising Arc Welding, Gas Welding, Resistance Welding, Special Welding
Techniques or TIG, MIG etc.; (Brazing & Soldering), Welding Defects &
Testing;
NDT, Founding & Casting including techniques, defects, processes in
casting,
Forging, Extrusion etc., Metal cutting principles, cutting tools, Basic
Principles of
Machining with Lathe, Milling, Drilling, Shaping, Grinding, Machines, Tools and
processes of manufacturing.
This article has included the
important topics to prepare for SSC JE Mechanical Engineering. Hope
this session has been helpful to the JE aspirants. Make sure you cover
every topic. Set an effective preparation strategy and manage the time for each
section. It is recommended that you refer the syllabus for getting a
clear idea on the important topics for SSC JE.
Practicing online SSC JE
Mechanical mock test will
surely get you a high score. So get the gears on… Start preparing from this
very moment!!!
ALL THE BEST!!!
