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  1. Name the safety device used to protect the boiler, when the water level falls below a minimum level.
  2. Shrinkage allowance on pattern is provided to compensate for shrinkage when the
  3. The refractory brick which has good thermal shock resistance at high temperature but cracks on cooling…
  4. Cold chisel & hammers are made of
  5. __________ property of a material is determined by the Herbert Pendulum device.
  6. Natural water contains approximately __________ percent of heavy water.
  7. Which one can be directly solidified from gaseous state without entering into liquid state?
  8. Which of the following mainly decides the current to be employed is arc welding?
  9. The refractory lining of the bottom in a basic electric arc furnace is made of
  10. Maximum permissible air velocity in pipelines is about __________ metre/second.
  11. Fire in fuel gas pipelines is extinguished most effectively by
  12. An ideal material for making cooking vessels should have
  13. The bolt is subjected to __________ when the nut is tightened by putting the washer beneath it.
  14. The mechanism which changes the value of manipulated variable in response to the output signal from…
  15. Sudden fall of atmospheric pressure by a large amount is an indication of the
  16. For grinding of softer materials, the grinding wheel should have __________ grain size.
  17. In a boundary layer developed along the flow, the pressure decreases in the downstream direction. The…
  18. The softness or hardness of a grinding wheel depends upon the type & amount of bonding material used.…
  19. Which of the following fastening devices has a head at one end and a nut fitted to the other?
  20. While the recrystallisation temperature for pure metals is 0.3 Tm, the same for alloys is equal to __________…
  21. 'GASOHOL' widely used in Brazil as a motor fuel is a mixture of alcohol and
  22. Enzymes belong to the category of
  23. Plasma is
  24. Regeneration of molecular sieve requires it to be heated to a temperature of about __________ °C.
  25. A metal having a Poisson's ratio = 0.3 is elastically deformed under uniaxial tension. If the longitudinal…
  26. In Newton's law of viscosity, which states that the shear stress is proportional to the __________ Co-efficient…
  27. For a small scale toy factory, the fixed cost per month is Rs. 5000/-. The variable cost per toy is…
  28. Which of the following is the largest quantum of pressure?
  29. While the oxy-acetylene flame produces a temperature of 3200°C, the temperature produced by oxy-hydrogen…
  30. Friction factor for fluid flow in pipe does not depend upon the