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ITI Workshop Calculation & Science – Complete Study Guide

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Electrical Quantities

By Anand | 12:31 PM MDT, Sun August 30, 2026

Electrical Quantities

Symbol

Quantity

Unit Symbol

Unit Name

Expression

V

Electric Potential

V

Volt

V = W/A

E

Electromotive Force (EMF)

V

Volt

V = W/A

I

Electric Current

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Units of Volume and Capacity

By Anand | 12:09 PM MDT, Sun August 30, 2026

Units of Volume and Capacity

Unit

Equivalent

Cubic millimetre

1 mm³

Cubic centimetre

1 cm³ = 1000 mm³

Cubic decimetre

1 dm³ = 1000 cm³

Cubic metre

1 m³ = 1000 dm³

Litre

1 L = 1 dm³

Hectolitre

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Units of Weight

By Anand | 12:09 PM MDT, Sun August 30, 2026

Units of Weight

Unit

Equivalent

Milligram-force

1 mgf

Gram-force

1 gf = 1000 mgf

Kilogram-force

1 kgf = 1000 gf

Tonne (metric ton)

1 t = 1000 kgf

Ounce

1 oz = 28.35 gf

Pound

1 lb = 0.454 kgf

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Prime Numbers and Whole Numbers

By Anand | 12:36 PM MDT, Tue August 18, 2026

Prime Numbers and Whole Numbers

Factor

A factor is a number which divides another number exactly.

Examples:

To find the factors of 24, 72, 100:

  • 24 = 2 × 2 × 2 × 3
  • 72 = 2 × 2 × 2 × 3 × 3
  • 100 = 2 × 2 × 5 × 5

The numbers 2, 3, 5 are called factors.

Prime Factor

A prime factor is a prime number which divides a given number exactly.

Example:

57 = 3 × 19

The numbers 3 and 19 are prime factors.

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Lowest Common Multiple (L.C.M)

By Anand | 12:28 PM MDT, Tue August 18, 2026

Lowest Common Multiple (L.C.M)

Definition

The Lowest Common Multiple (LCM) of a group of numbers is the smallest number that is exactly divisible by all the given numbers.

Prime Factorization Method

Example 1: Find LCM of 20, 66, 128

  • 20 = 2 × 2 × 5
  • 66 = 2 × 3 × 11
  • 128 = 2 × 2 × 2 × 2 × 2 × 2 × 2

Take highest powers of all prime factors:

LCM = 27 × 3 × 5 × 11 = 42240


Example 2: Find HCF of 78, 128, 196

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Units of Area

By Anand | 12:05 PM MDT, Mon August 10, 2026

Units of Area

Unit

Equivalent

Square millimetre

1 mm²

Square centimetre

1 cm² = 100 mm²

Square decimetre

1 dm² = 100 cm²

Square metre

1 m² = 100 dm²

Are

1 a = 100 m²

Hectare

1 ha = 100 a

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Conversion Factors

By Anand | 12:03 PM MDT, Mon August 10, 2026

Conversion Factors

Conversion

1 inch = 25.4 mm

1 mm = 0.03937 inch

1 metre = 39.37 inch

1 micron = 0.00003937 inch

1 kilometre = 0.621 miles

1 pound = 453.6 g

1 kg = 2.205 lb

1 metric ton = 0.98 ton

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Prefixes for Decimal Multiples and Submultiples

By Anand | 12:00 PM MDT, Sun August 09, 2026

Prefixes for Decimal Multiples and Submultiples

Use

1 Megapascal = 1 MPa = 1000000 Pa

1 Kilowatt = 1 kW = 1000 W

1 Hectolitre = 1 hL = 100 L

1 Decanewton = 1 daN = 10 N

1 Decimetre = 1 dm = 0.1 m

1 Centimetre = 1 cm = 0.01 m

1 Millimetre = 1 mm = 0.001 m

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SI Units and the British Units

By Anand | 11:57 AM MDT, Sun August 09, 2026

SI Units and the British Units

Quantity

SI unit → British unit

British unit → SI unit

Length

1 m = 3.281 ft
1 km = 0.621 mile

1 ft = 0.3048 m
1 mile = 1.609 km

Speed

1 m/s = 3.281 ft/s
1 km/h = 0.621 mph

1 ft/s = 0.305 m/s
1 mph = 1.61 km/h

Acceleration

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Decimal Multiples and Parts of Unit

By Anand | 11:55 AM MDT, Wed August 05, 2026

Decimal Multiples and Parts of Unit

Decimal Power

Value

Prefix

Symbol

Stands for

1012

1000000000000

tera

T

trillion times

109

1000000000

giga

G

billion times

106

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Semester-II Workshop calculation and science Paper II

Question Paper

  • Workshop Calculation Semester 4 Jan 2017
  • Workshop Calculation Semester 4 Jan 2018
  • Workshop Calculation Semester 3 July 2017
  • Workshop Calculation Semester 2 July 2018
  • Workshop Calculations Semester 1 January 2018
  • Workshop Calculations Semester 1 July 2017
  • Workshop Calculations Semester 1 July 2018
  • Workshop Calculations Semester 2 January 2018
  • Workshop Semester 2 July 2017
  • Workshop Semester 2 July 2018
  • Workshop Calculations Semester 3 July 2018
  • Workshop Calculation Semester 4 July 2018
  • Workshop Calculations Semester 3 January 2018
  • Workshop Calculations Semester 3 July 2017
  • Workshop Calculations Semester 4 January 2018
  • Workshop Semester 4 July 2017
  • Workshop Calculation Semester 1 July 2018
  • Workshop Calculation Semester 2 July 2018
  • Workshop Calculation Semester 2 July 2017
  • Monthly test (November-2015)
  • Workshop Calculation Semester 1 Jan 2018
  • Workshop Calculation & Science Sem 2 Jan 2018
  • Workshop Calculation Semester 3 July 2018
  • Workshop Calculation Semester 3 Jan 2018

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