RRB ALP (Assistant Loco Pilot) Basic Science & Engineering (CBT Stage 2 Part A) Syllabus

Basic Science & Engineering (CBT Stage 2 Part A) syllabus — full chapter and topic list

Expand any chapter to see its topics and sub-topics. This is the whole examinable outline for Basic Science & Engineering (CBT Stage 2 Part A) in RRB ALP (Assistant Loco Pilot), not a summary of it.

1. 1

   Engineering Drawing and Measurement

   3 topics

   • Engineering Drawing Fundamentals
     • Projections and views
     • Lines, symbols and conventions
   • Units, Measurements and Instruments
     • SI units and conversions
     • Measuring instruments and gauges
   • Mass, Weight and Density
     • Specific gravity and density
2. 2

   Engineering Mechanics and Materials

   4 topics

   • Work, Power and Energy
     • Mechanical work and power
   • Speed and Velocity
     • Linear and angular motion
   • Levers and Simple Machines
     • Mechanical advantage
     • Pulleys and gears
   • Engineering Materials
     • Ferrous and non-ferrous metals
     • Properties of materials
3. 3

   Basic Electricity

   4 topics

   • Electrical Fundamentals
     • Current, voltage and resistance
     • Ohm's law and Kirchhoff's laws
   • Electrical Circuits and Components
     • Series and parallel circuits
     • Conductors, insulators and semiconductors
   • Magnetism and Electromagnetism
     • Magnetic field and flux
   • Electrical Machines and Safety
     • Motors and generators basics
     • Electrical safety and earthing
4. 4

   IT Literacy and Occupational Safety

   3 topics

   • Basics of Computers
     • Hardware and software
     • Operating systems and networking basics
   • Environmental Education
     • Pollution control and sustainability
   • Occupational Safety and Health
     • Workplace hazards and precautions
     • First aid and safety equipment

Basic Science & Engineering (CBT Stage 2 Part A) flashcards for RRB ALP (Assistant Loco Pilot)

24 of 50 cards from the Basic Science & Engineering (CBT Stage 2 Part A) deck — real questions with worked answers.

1. In engineering drawing, what is meant by 'scale' and what does a scale of 1:50 indicate?

   Scale is the ratio of the dimension in a drawing to the actual dimension of the object. A scale of 1:50 means 1 unit on the drawing represents 50 units in reality (a reduced scale).

2. What is first-angle projection and which regions/countries primarily use it?

   In first-angle projection the object is placed between the observer and the plane of projection, so views are projected onto the far plane. It is used in India and most European countries (symbol: a truncated cone with small circle on the left).

3. Name the three principal views used in orthographic projection.

   Front view (elevation), top view (plan), and side view (end view/profile).

4. What type of line is used to represent hidden edges in an engineering drawing?

   Short dashed lines (hidden lines).

5. In engineering drawing, what does a chain line (long dash–dot) represent?

   A centre line, axis of symmetry, or path of motion.

6. What are the seven base SI units and their quantities?

   Metre (length), kilogram (mass), second (time), ampere (electric current), kelvin (temperature), mole (amount of substance), candela (luminous intensity).

7. What instrument measures very small lengths to an accuracy of 0.01 mm, and what is its key principle?

   The vernier caliper; it works on the principle that a small difference between main scale and vernier scale divisions gives a least count of 0.01 mm (0.02 mm for many).

8. What is the 'least count' of a measuring instrument?

   The smallest measurement (smallest value) that an instrument can read accurately.

9. What is the least count of a standard micrometer screw gauge?

   0.01 mm (pitch of 0.5 mm ÷ 50 divisions on the thimble = 0.01 mm).

10. Differentiate between accuracy and precision in measurement.

    Accuracy is how close a measured value is to the true value; precision is how close repeated measurements are to each other (consistency/reproducibility).

11. Define mass and state its SI unit.

    Mass is the quantity of matter contained in a body; it is constant everywhere. SI unit: kilogram (kg).

12. How does weight differ from mass, and what is its SI unit?

    Weight is the gravitational force on a body (W = m × g) and changes with location; mass stays constant. SI unit of weight: newton (N).

13. Define density and give its SI unit and formula.

    Density is mass per unit volume. Formula: ρ = mass/volume. SI unit: kg/m³.

14. What is relative density (specific gravity)?

    The ratio of the density of a substance to the density of water at 4°C. It has no units.

15. What is the approximate value of acceleration due to gravity (g) on Earth?

    Approximately 9.8 m/s² (often taken as 9.81 m/s²).

16. Define work in physics and give its formula and SI unit.

    Work is done when a force moves a body in the direction of the force. W = Force × displacement (W = F × d). SI unit: joule (J).

17. Define power, give its formula and SI unit.

    Power is the rate of doing work. P = Work/time. SI unit: watt (W), where 1 W = 1 J/s.

18. How many watts are there in 1 horsepower (metric)?

    1 horsepower ≈ 746 watts (electrical HP); metric HP ≈ 735.5 W.

19. State the law of conservation of energy.

    Energy can neither be created nor destroyed; it can only be transformed from one form to another. The total energy of an isolated system remains constant.

20. Give the formulas for kinetic energy and potential energy.

    Kinetic energy KE = ½mv²; Potential energy (gravitational) PE = mgh.

21. Distinguish between speed and velocity.

    Speed is the rate of change of distance (a scalar, no direction). Velocity is the rate of change of displacement in a given direction (a vector).

22. What is acceleration and its SI unit?

    Acceleration is the rate of change of velocity with time. SI unit: m/s².

23. Convert 72 km/h into m/s.

    72 × (5/18) = 20 m/s.

24. What is a lever, and what are its three components?

    A lever is a rigid bar that turns about a fixed point. Its three components are the fulcrum (pivot), effort (applied force), and load (resistance).

See more Basic Science & Engineering (CBT Stage 2 Part A) flashcards →

Planning Basic Science & Engineering (CBT Stage 2 Part A) for RRB ALP (Assistant Loco Pilot)

Basic Science & Engineering (CBT Stage 2 Part A) (RRB ALP (Assistant Loco Pilot)) FAQ