Related Questions
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4
Enzymes belong to the category of
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Maximum permissible sulphur content in steel is __________ percent.
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__________ has a negative co-efficient of linear expansion.
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Brittleness induced due to the presence of sulphur in steel can be reduced by adding
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4
Use of flux during soldering is done to
A. Increase fluidity of solder by lowering its melting temperature
B. Prevent oxide formation
C. Wash away surplus solder
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4
To improve the machinability of steel, it is generally subjected to
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4
Which of the following test is used for distinguishing among dry oils, semi-drying oils and non drying oils?
B. Reichert-Meissl value test
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An abrupt and sudden fall in the reading of barometer is an indication of the
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The specific gravity of coal depends mainly on its __________ content.
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__________ iron is produced by the annealing of white cast iron.
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__________ pipe is the most suitable for carrying sanitary drainage.
B. Reinforced cement concrete
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Energy to be supplied to the radioactive nucleus for the emission of a neutron is __________ MeV.
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4
The following type of bonding is strongly directional in solids.
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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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Cast iron contains __________ percent carbon.
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Silicon percentage in acid resistant cast iron is about
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A 2 kg object weighs 1.8 kgf on a spring balance. The value of 'g' at that location in m/sec2 is
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4
Volumetric composition of flue gas analysed with the Orsat apparatus is : CO2 = 12%, O2 = 8%, CO = nil, N2 = 80%. This flue gas composition indicates that
A. Pure oxygen has been used for combustion
B. Nitrogen percentage in the fuel is very high
C. Excess air has been used for combustion
D. Hydrogen is not present in the fuel
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Temperature attained in soldering of metals is about __________ °C.
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Fahrenheit and Centigrade scales have the same readings at
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Gantt charts are used for streamlining the
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Which of the following is normally not found in both the S.I. (petrol) & C.I. (diesel) engines?
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4
The capacity of a spring to store energy is called the spring form co-efficient. Stiffness of a spring is measured by the
A. Ability to absorb shock
B. Capacity to store energy
C. Ratio of the wire & coil diameters
D. Load to produce unit deflection
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4
Stainless steel is welded using
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Common salt is produced from sea water in India generally by the __________ method.
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Which of the following is the correct nature of shear stress distribution along the cross section in a horizontal circular pipe under steady state fluid flow condition?
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Sudden fall of atmospheric pressure by a large amount is an indication of the
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'Ice point' is designated on Fahrenheit temperature scale by
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4
In TIG welding, thoriated tungsten electrodes are used, because it
A. Has higher current carrying capacity
B. Has better electron emissivity
C. Is stronger than ordinary tungsten
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Nickel and __________ are the alloying element added in steel to increase its toughness.