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# Workshop Calculation and Science 2nd year

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1. What is the expanded form of S.P?

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2. Which is a kind of surface hardening process?

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3. Which is thermosetting plastic?

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4. Which force acts on crank shaft?

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5. Which one is the ratio of stress?

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6. What is the unit of strain?

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7. Which is elastic material?

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8. What are the three consecutive numbers if there sum is 42?

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9. What is the value of x if (x + 2) / 2 = 19?

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10. What is the value of x, if 3 (2x - 4) = -4x + 28 ?

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11. What is the value of x if 13+x =20?

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12. What is the simplified value of (3x + 15) / 5x + 25)

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13. What is the diameter of the circle, if the circumference is 31.4 cm?

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14. What is the area of the semicircle, if the diameter is 14 cm?

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15. What is the area of the circle if the radius is 10 cm?

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16. What is the radius of a circle whose diameter is 44 cm?

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17. What is the area of the circle, if the circumference of the circle is 44cm?

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18. What is the name called biggest chord of the circle?

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19. What is the circumference of a semi circle?

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20. What is the centre of gravity of a semi circle of diameter 12 cm?

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21. What is the centre of gravity of the lamina?

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22. What is the centre of gravity of a sphere?

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23. Which affects the centre of gravity of the object?

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24. What is co-efficient of friction for pulling a load of 400 kg by a force of 40 kg?

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25. How much force is required to move an object weights 20 kg, if the value of m = 0.24?

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26. Which way the coolant acts as a lubricant?

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27. Which is used to reduce the friction in machine parts?

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28. What is the purpose of a lubricant?

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29. Which is wasteful friction?

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30. Which is useful friction?