Maharashtra HSC Workshop Science & Calculation study plan

Identify and state the purpose of at least 12 hand tools and measuring instruments (steel rule, vernier caliper, micrometer, try square, surface plate, centre punch, files, hacksaw, taps and dies) and their safe handling rules

Apply the workshop safety hierarchy: list five causes of shop-floor accidents and the correct personal protective equipment for lathe, drilling, grinding and welding operations

Read a vernier caliper and outside micrometer to 0.02 mm and 0.01 mm respectively, including zero-error correction, across 20 practice readings

Compute volume of a rectangular block, a cylinder and a hollow pipe from given dimensions, keeping units consistent throughout

Convert measured dimensions into mass using mass = volume x density for steel, aluminium and cast iron

Solve 15 mixed problems on length, area (rectangle, circle, triangle, trapezium), volume and surface area of standard workshop shapes

Convert values between SI prefixes (mm, cm, m, km; g, kg, tonne) and between metric and inch units using 1 inch = 25.4 mm without rounding errors

Compute density, mass and volume in all three rearrangements and check each answer by unit analysis

Apply percentage and proportion to workshop cases: alloy composition, shrinkage allowance, wastage percentage and mixture ratios

Explain the difference between the FPS, CGS and SI systems and state which base units apply to force, pressure and density

Classify ferrous and non-ferrous metals and state composition, one typical workshop use and one property for at least eight materials including mild steel, cast iron, high carbon steel, HSS, brass, bronze, aluminium and copper

Define and distinguish the mechanical properties: hardness, toughness, brittleness, ductility, malleability, elasticity, plasticity and machinability

Calculate the effect of carbon content and alloying on selection by matching five given jobs to a justified material choice

Compute mass of a workpiece before machining and the mass removed by a given depth of cut, using density values

Interpret a simple tensile test result to find stress and percentage elongation from load and original dimensions

State the cutting speed formula V = piDN/1000 and solve for spindle speed N given V and D in 12 problems across mild steel, aluminium and cast iron

Solve for cutting speed or diameter when rpm is known, and select the nearest available machine speed from a given speed chart

Compute feed rate in mm/min from feed per revolution and rpm, and calculate machining time for turning as length divided by feed rate

Calculate drilling time including approach and overtravel, and milling time from table feed and job length

Estimate material removal rate and total machining time for a multi-pass turning job

Compute taper angle, half taper angle, taper ratio and taper per unit length, and set the compound rest or tailstock offset for a given taper

Calculate the depth of cut and number of passes for a specified taper on a lathe

Identify screw thread elements (major, minor and pitch diameter, pitch, lead, flank angle) and compute pitch from threads per inch and vice versa

Compute the change-gear ratio for cutting a given metric or inch thread on a lathe with a stated lead screw pitch

Calculate simple and compound gear train ratios, driver and driven speeds, and module-based gear dimensions (pitch circle diameter, addendum, dedendum)

Apply Ohm's law and the power formulas P = VI, P = I squared R and P = V squared / R to workshop circuits and motor loads

Compute electrical energy consumption in kWh for a given motor load and running hours, and convert to cost using a tariff rate

Calculate efficiency and losses for a workshop motor from input and output values

Estimate material requirement for a batch: net mass per piece, gross mass with wastage percentage, and total bar length or plate area needed

Prepare a cost estimate covering material cost, labour cost, machine hour rate, overhead percentage and profit, and compute selling price

Read orthographic views and identify missing or third-angle projection features, then derive the true shape and dimensions of a simple component from given views

Compute lengths, angles and areas from drawing dimensions, including circumference, arc length and area of a sector for a bent sheet component

Interpret limits, fits and tolerances and compute allowance and maximum/minimum clearance for a given hole and shaft pair

Select the correct lubricant type for bearings, gears, slides and cutting operations, and state the consequence of under-lubrication

Calculate energy and cost savings from replacing a worn bearing, fixing an air leak or switching to a more efficient lubricant schedule

Revise all formula cards from weeks 1 to 7 and rewrite them from memory in a single consolidated sheet

Complete two timed full-length mock papers under exam conditions and score them against the answer key

Re-solve every previously wrong question and record the exact error type (formula, unit, arithmetic, concept)

Practise the highest-weight domains (safety, machining, taper and thread, costing) until each is answered at 80 percent accuracy or better

Build a final one-page formula and unit-conversion sheet that can be mentally reconstructed during the exam