ISC Class 12 Syllabus 2022 Engineering Science

ENGINEERING SCIENCE (867) This subject may not be taken with Physics. The examiners will attach importance to an understanding of scientific principles and will look for The syllabus is designed for candidates who have evidence that these have been studied practically. The followed a course with a bias towards engineering. examiners may ask to see the practical notebooks. CLASS XI There will be one paper of three hours duration of 5. Moments. Application to parallel forces, levers, 100 marks. vertically loaded rigid beams. Centre of gravity: experimental determination and calculation in Section A of the paper will contain short answer simple cases. Its relation to stability. questions, all of which are to be answered. 6. Pressure in liquids and its transmission. Principle Section B of the paper will contain six questions of of Archimedes; floatation. Density and specific which candidates must answer five questions. gravity of solids and liquids. Simple hydraulic pumps and jacks. Lift and force pumps; the Note: All questions will be set in the S.I. System. siphon. The unit abbreviations to be used in all question papers in this subject will be those contained in the 7. Air Pressure. Boyle's law. Barometers. Guide to the use of International System (SI) units SP; Manometers and the Bourdon gauge. The bicycle 5-1969 (Published by the Indian Standards pump. (Details of the Fortin barometer are not required.) Institution). 8. Temperature and temperature scales. 1. Velocity and acceleration. Laws of motion. Force, 9. Thermal expansion of solids, liquids and gases. mass and acceleration. Acceleration due to Coefficient of linear expansion of solids and gravity. Measurement of g, including examples of coefficient of cubical expansion of liquids and bodies moving with variable acceleration, treated gases. Charles' law. Absolute temperature. graphically. (Questions will not be set on apparent coefficients of expansion). 2. Angular velocity and angular acceleration. 10. Quantity of heat. Joule, Centigrade heat unit. 3. Composition and resolution of velocity. Simple Specific heat capacity of solids and liquids; their problem on projectiles, involving combined determination. Change of state. Latent heats: their horizontal and vertical motion. determination. Melting and boiling points; the effect of pressure. Heat as a form of energy. 4. Measurement and effects of force. Equilibrium of Calorific value of fuels (excluding experimental concurrent forces in plane. Parallelogram, triangle determination). and polygon of forces. Reaction, resultant and 11. Conduction, convection and radiation. equilibrant. Bow's notation. Equilibrium of body on inclined plane. Treatment by graphical and 12. Conversion of heat to mechanical energy and vice mathematical methods. versa. Mechanical equivalent of heat, including any one method of determination. 247

CLASS XII There will be one paper of three hours duration of 100 relationship with mass and acceleration. marks. Knowledge of coefficient of restitution is not required. Section A of the paper will contain short answer questions, all of which are to be answered. 8. Magnetism. Magnetic properties of iron and steel. The magnetic circuit; qualitative treatment only, Section B of the paper will contain six questions of with examples from transformers and machines. which candidates must answer five questions. The compass needle. Magnetic effect of current in Note: All questions will be set in the S.I. System. The straight wire, single turn coil and solenoid, treated unit abbreviations to be used in all question papers in qualitatively. Electromagnets and their simple this subject will be those contained in the Guide to the applications. Relation of direction of current in use of International System (SI) units SP; 5-1969 conductor and lines of magnetic force applied. (Published by the Indian Standards Institution). Examples of the application of electromagnets to include electric trembler bell and relay. 1. Strength of materials. Simple problems. Hooke's law, stress and strain. Young's modulus. Tension 9. The simple circuit. Conductors and insulators. and compression. Elastic limit. Ultimate strength. Electromotive force, potential difference, current, Factors of safety. quantity and resistance; the volt, ampere, coulomb ampere-hour and ohm. Ohm's law. Measurement 2. Friction. Conditions affecting friction. of resistance, including Wheatstone bridge, Lubrication. Conditions should include types of Resistivity. Resistors in series and in parallel. materials, their surface finish and wetness or dryness. 10. Heating effect of current. Energy and power. Conversion of electrical to mechanical energy and 3. Limiting friction. Coefficients of friction. vice versa. The joule, watt, and kilowatt-hour. 4. Work. Work done by constant and by varying Simple applications of heating effect. Effect of force; graphical representation of and calculations temperature on resistance. Temperature thereon. Energy, potential and kinetic. coefficient. Examples to include various domestic Conservation of energy and conversion into work, heating appliances and filament lamps. work done in rotation. Torque. 11. Chemical effect of current field. Electrolytes. 5. Machines. Simple single-string pulley systems. Electrolysis. Electrochemical equivalent. Simple and differential wheel and axle. Weston Production of current by chemical action. Simple pulley block. Screw jack. Worm (single start voltaic cell. Primary and secondary cells. thread and wheel). Gear and belt drives. Velocity Polarisation: prevention and removal. Cells in ratio, mechanical advantage and efficiency. series and in parallel. Chemical equations are not required. 6. Power. Simple treatment of steam and internal combustion engines. Indicators diagrams. 12. Current-carrying conductor in magnetic field. The Indicated mean effective pressure. Indicated and D.C. motor including series and shunt windings. brake horsepower. Methods of measurement of Galvanometers, voltmeters and ammeters. Shunts power. Rope brake and Prony brake. Hydraulic and multipliers. A qualitative treatment of power (as given by the product of constant multiple D.C. motors is included. pressure and rate of volume change). Mechanical 13. Electromagnetic induction: the laws of induction. efficiency. Relationship between rev/min and Back e.m.f. of motor. Starting resistance for D.C. working strokes per minute in double-acting motor. Simple a.c. and D.C. generators. Relation steam engines and in two and four-stroke internal of direction of lines of force, motion of conductor combustion engines. The oscillating cylinder and current in coil. Eddy currents. Transformers. steam engine is not required. The induction coil; the coil ignition system. A 7. Momentum. Conservation of momentum, qualitative treatment of multipole D.C. generators including rate of change of momentum and is included. 248