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A dummy activity is used in PERT network to describe the

A. Precedence relationship

B. Resource idleness

C. Resource restriction

D. Necessary time delay

Please do not use chat terms. Example: avoid using "grt" instead of "great".

You can do it
  1. The mechanism which changes the value of manipulated variable in response to the output signal from…
  2. Wavelength of radiation emitted by a body depends on the __________ of its surface.
  3. Cobalt - 60 is used as a source of __________ in medical therapy & industrial radiography.
  4. Screws are specified by their __________ diameters.
  5. Oxygen cylinders used for autogenous (cutting/welding) purposes are
  6. Brinell Hardness Number (BHN) for talc is approximately in the range of
  7. For a first order chemical reaction, the concentration of the reactant decreases __________ with time.
  8. Regeneration of molecular sieve requires it to be heated to a temperature of about __________ °C.
  9. Holes for riveting purposes should be preferably made by
  10. Temper brittleness of a material can be fairly detected by the __________ test.
  11. Earing is a defect found in steels after the following metal working operation.
  12. While the thermosetting polymers are amorphous in nature, the thermoplastic polymers are either amorphous…
  13. In practice, the compression ratio of compression-ignition (CI) engine ranges from
  14. __________ stress cannot be sustained by a fluid in equilibrium.
  15. Theoretical volume of oxygen required for complete combustion of 1Nm3 of acetylene, in oxyacetylene…
  16. Volume of blast furnace slag is about __________ times the volume of hot metal (pig iron) of the same…
  17. Tin based white metals are used, where bearings are subjected to
  18. Work required for compression of a gas contained in a cylinder is 7000 kJ. During compression, heat…
  19. Evaporative cooling process employs a combination of cooling and humidification in which the
  20. Silicon percentage in acid resistant cast iron is about
  21. A fluid is termed as the Newtonian fluid, when the shear stress is __________ the velocity gradient.
  22. Heat transfer to the water wall in a high pressure water wall type boiler furnace is mainly by
  23. Pick out the wrong statement.
  24. Hardening of steel is not possible, unless it is heated __________ critical point.
  25. The expected efficiency of a single riveted lap joint is of the order of 50%. If the thickness of the…
  26. Austempering process results in the formation of __________ structure.
  27. The property of material, by which a given amount of energy is absorbed by it, without plastic deformation,…
  28. Water flow in the river during flood can be categorised as the __________ flow.
  29. Which of the following metals reacts violently with water?
  30. Corrosion rate cannot be lowered by reducing the __________ of the corroding medium.