Mechanical engineering is the discipline that applies engineering, physics, and materials science principles to design, analyze, manufacture, and maintain mechanical systems. It is the branch of engineering that involves the design, production, and operation of machinery.
Mechanical Engineering Questions and Answers (MCQ) With Topic wise
- Mechanical Engineering Basics
- Engineering Mechanics
- Strength of Materials
- Hydraulics and Fluid Mechanics
- Hydraulic Machines
- Thermodynamics
- Steam Boilers and Engines
- Steam Nozzles and Turbines
- Machine Design
- Compressors, Gas Dynamics and Gas Turbines
- IC Engines and Nuclear Power Plants
- Theory of Machines
- Heat Transfer, Refrigeration and Air Conditioning
- Workshop Technology
- Production Engineering
- Automobile Engineering
- Industrial Engineering and Production Management
- Engineering Materials
Mechanical Engineering Theory Notes Topic Wise
- Introduction of Engineering Mechanics
- Force – Basic Definition
- Resultant Force
- System of Forces
- Lami’s Theorem
- Moment of a Force
- Varignon’s Principle of Moments
- Parallel Forces
- Couple – Moment of a couple
- Center of Gravity
- Moment of Inertia
- Friction and Its types
- Limiting Angle of Friction
- Angle of Repose
- Minimum Force Required to Slide a Body on Horizontal Plane
- Effort Required to Move the Body on an Inclined Plane
- Screw Jack
- Lifting Machine (Lift)
- Systems of Pulleys
- Truss or Frame
- Speed, Velocity, Acceleration, Retardation
- Equations of Linear Motion
- Newton’s Laws of Motion
- Mass, Weight, Momentum and Inertia
- D-Alembert’s Principle
- Motion of a Lift or Elevator
- Motion of Two Bodies Connected by a String over a pulley
- Projectile Motion
- Equation of the Path of a Projectile
- Angular Displacement
- Angular Velocity
- Angular Acceleration
- Simple Harmonic Motion
- Velocity and Acceleration of a Particle Moving With Simple Harmonic Motion
- Simple Pendulum
- Closely Coiled Helical Spring
- Compound Pendulum
- Center of Percussion / Oscillation
- Torsional Pendulum
- Centripetal and Centrifugal Force
- Superelevation | Angle of Inclination
- Elastic and Inelastic Collisions
- Mechanical Work | Definition | Formula
- Mechanical Power | Definition | Formula
- Mechanical Energy | Definition | Types
Hydraulic Machines:
- Hydraulic Machines – Introduction
- Impact of Water Jets
- Hydraulic Turbines
- Draft Tube in Turbine
- Specific Speed of turbine
- Unit Speed, Unit Discharge and Unit Power
- Cavitation
- Centrifugal Pumps
- Multistage Centrifugal Pumps
- Specific Speed of Centrifugal Pump
- Net Positive Suction Head (NPSH)
- Model Testing and Similarity of Pumps
- Reciprocating Pump
- Air Vessels
- Miscellaneous Hydraulic Machines
Thermodynamics:
- Thermodynamics – Introduction
- Thermodynamic System
- Properties of a System
- Thermal Equilibrium
- Laws of Thermodynamics
- Laws of Perfect Gases
- General Gas Equation
- Characteristic Equation of a Gas
- Joule’s Law
- Avogadro’s Law
- Universal Gas Constant
- Specific Heats of a Gas
- Relation Between Specific Heats
- Thermodynamic Processes of Perfect Gases
- Constant volume (isochoric) process
- Constant Pressure (Isobaric) Process
- Hyperbolic process
- Constant temperature/ isothermal process
- Adiabatic process or isentropic process
- Polytropic process
- Free expansion process
- Throttling process
- General Laws for Expansion and Compression
- Entropy
- Thermodynamic Cycle
- Classification of Thermodynamic Cycles
- Efficiency of a Cycle
- Carnot Cycle
- Stirling Cycle
- Ericsson Cycle
- Joule Cycle
- Otto Cycle
- Diesel Cycle
- Dual Combustion Cycle
- Gas Turbines
- Closed Cycle Gas Turbine
- Open Cycle Gas Turbine
- Thermal Efficiency of Ideal Gas Turbine
- Efficiency of Gas Turbine
- Fuels and Combustion
- Solid Fuels
- Liquid Fuels
- Gaseous Fuels
- Calorific Value of Fuels
- Combustion of Fuels
- Theoretical or Minimum Air Required for Complete Combustion
- Mass of Carbon in Flue Gases
- Mass of Excess Air Supplied
IC Engines:
- IC Engines – Introduction
- Two Stroke vs Four Stroke Engines
- Sequence of Operations in IC Engine
- Valve Timing Diagram of Petrol Engine
- Valve Timing Diagram of Diesel Engine
- Comparison of Petrol and Diesel Engines
- Scavenging of IC Engines
- Ignition System of Petrol Engines
- Supercharging of IC Engines
- Lubrication of IC Engines
- Governing of IC Engines
- Carburetor of an IC Engine
- Spark Plug in IC Engines
- Detonation or Knocking in IC Engines
- Octane Number – Rating of S.I. Engine Fuels
- Cetane Number – Rating of CI Engine Fuels
- Testing of IC Engines
- Thermodynamic Tests for I.C. Engines
- Indicated mean effective pressure
- Indicated power of an IC Engine
- Brake power of IC Engine
- Efficiency of an IC Engine
Engineering Materials:
- Engineering Materials – Introduction
- Pig Iron
- Cast Iron
- Wrought Iron
- Steel
- Alloy Steel
- Free Cutting Steel
- Stainless Steel
- Structure of solids
- Effect of grain size on mechanical properties
- Metallography
- Allotropic Forms of Pure Iron
- Iron-Carbon Equilibrium Diagram
- Heat Treatment
- Non-ferrous metals and alloys
- High temperature alloys
- Metals for nuclear energy
- Plastics
Industrial Engineering & Production Management:
- Production Management – Introduction
- Industrial Engineering – Introduction
- Work Study
- Symbols Used in Work Study
- String Diagram
- Work Measurement
- Time Study
- Pre-determined Motion Time System (PMTS)
- Micromotion Study
- Break-even Analysis
- Wage Incentive Plans
- Event, Activity and Critical Path
- Program Evaluation Review Technique (PERT)
- Critical Path Method (CPM)
- Organization
- Inventory Control
- Plant layout
- Routing, Scheduling and Dispatching
- Linear programming
Hydraulics & Fluid Mechanics:
- Hydraulics and Fluid Mechanics – Introduction
- Important Terms Used in Hydraulics and Fluid Mechanics
- Properties of Liquid
- Pressure of a Liquid
- Pascal’s Law
- Atmospheric Pressure, Gauge Pressure and Absolute Pressure
- Measurement of Pressure
- Total Pressure and Centre of Pressure
- Lock Gates
- Buoyancy and buoyant force
- Equilibrium of Floating Bodies
- Metacentre and Metacentric Height
- Fluid Kinematics
- Rate of Discharge
- Equation of Continuity
- Types of Flows in a Pipe
- Dynamics of Fluid
- Different Types of Energies or Head of a Liquid in Motion
- Bernoulli’s Equation
- Euler’s Equation
- Venturimeter
- Orifice Meter and Pitot Tube
- Momentum Equation
- Orifice
- Hydraulic Coefficients
- Important Expressions used in Orifices and Mouthpieces
- Notches and Weirs
- Important Expressions used in Notches and Weirs
- Pipes and Channels
- Loss of Head due to Friction in Pipe
- Hydraulic Gradient and Total Energy Lines
- Pipes in Series or Compound Pipes
- Pipes in Parallel
- Syphon
- Power Transmitted through the Pipe
- Flow through Nozzle at the end of a Pipe
- Water Hammer
- Flow Through Open Channels
- Most Economical Section of a Channel
- Vortex Flow
- Viscous Flow
- Newton’s Law of Viscosity
- Viscous Resistance
- Compressible Flow of Fluids
- Velocity of Sound Wave
- Mach Number and its Importance
- Stagnation Point
- Flow Around Immersed Bodies
- Forces Present in a Moving Liquid
- Dimensionless Numbers