Related Questions
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The property of material, by which a given amount of energy is absorbed by it without plastic deformation, is called the
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The highest stress that a material can withstand for a specified length of time without excessive deformation is called the __________ strength.
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The most commonly used moderator in nuclear power plants is
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Biological shield in a nuclear reactor is generally provided to protect against the
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Which of the following low melting alloy containing bismuth and lead is used for electric fuse?
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4
Photographic plates are coated with
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Dry saturated steam can be converted into superheated steam by
A. Increasing its cross-sectional area of flow
B. Passing it through a pressure reducing valve
C. Forcing it downwards through a vertical tube
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What is the value of included angle of a triangular notch for maximum discharge?
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4
Fire in fuel gas pipelines is extinguished most effectively by
B. Blanketting the area with nitrogen atmosphere
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Removal of non-condensable from steam or other vapour is termed as the __________ process.
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Which of the following represents the correct time-temperature curve when a block of metal is heated above room temperature & then left to cool in the room following Newton's law of cooling in which the rate of temperature drop will go on decreasing with the passage of time.
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Viscoelastic behaviour is observed in __________ materials.
A. Non-crystalline organic polymeric
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Which of the following has the highest value of refractive index?
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Which of the following if present in iron ore, enhances its value?
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Hot & cold working of material causes its __________ deformation.
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The diffusion co-efficient of Ni in Cu at 1000 K is 1.93 × 10-16 m2S-1 and it is 1.94 × 10-14 m2S- 1 at 1200 K. The activation energy (in k. J.mole-1) for the diffusion of Ni in Cu is
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4
The hardenability of steel decreases with
A. Decrease in dislocation density
B. Increase in solutionising temperature
D. Decrease in grain size
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Carbide tipped cutting tools are manufactured by powder metallurgy techniques and have a composition of
A. 90% tungsten carbide and 10% cobalt
B. 70% aluminium oxide & 30% silica
C. 30% nickel, 15% chromium & 55% tungsten
D. 65% tungsten & 35% zirconium
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Isotropic materials have the same __________ in all directions.
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Gross national product (GNP) means the total value of __________ in a country.
C. Earning of the citizens
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Regeneration of molecular sieve requires it to be heated to a temperature of about __________ °C.
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Powder metallurgy process does not make metal powder by
D. Electrolytic deposition
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Unbreakable crockeries are made from __________ polymers.
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A dummy activity is used in PERT network to describe the
A. Precedence relationship
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Sacrificial anode method is used in the protection of pipelines which are buried underground. Sacrificial anode
A. Occurs higher in the electro-chemical series of metals
B. Is exemplified by magnesium plate
C. Is much cheaper than the cathodic base material to be guarded against corrosion
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Half life of a radioactive isotope corresponds to the time required for half of the __________ to decay.
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The atmospheric temperature during melting of ice/snow (in the atmosphere)
D. May increase or decrease; depends on the altitude where snow melts
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__________ is not used as the control rod material in a nuclear reactor.
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__________ test can be termed as the semidestructive test.
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A psychrometer does not measure the __________ temperature of moist air.