Related Questions
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The materials which fracture even at small strains are termed as brittle, while those materials which exhibit an appreciable deformation before failure are termed as
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4
Spherical shape of mercury droplets is due to its
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4
In chemical dehumidification process
A. Wet bulb temperature increases
B. Dry bulb temperature remains constant
C. Dew point temperature increases
D. Dry bulb temperature increases
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4
Evaporative cooling process employs a combination of cooling and humidification in which the
A. Sensible heat is added
B. Sensible heat is removed and the latent heat is added
C. Latent heat is removed
D. Sensible heat is added and latent heat is removed
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4
Square steel key is normally strong in failure by shear & crushing. Keys are normally made of __________ steel bars.
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4
While the oxy-acetylene flame produces a temperature of 3200°C, the temperature produced by oxy-hydrogen flame is about __________ °C.
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Maximum consumption of limestone is in the __________ industry.
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The yield point phenomenon observed in annealed low carbon steel is due to the presence of the following element.
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4
Gratings is associated with the measurement of
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Air intake for an air compressor should be preferably taken from
A. A site, where cooling towers are located nearby
B. A site, where open coal yard in located nearby
C. An air conditioned room maintained at a temperature of 18°C
D. An outside atmosphere at 10°C
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4
Pick out the wrong statement.
A. The equivalent stiffness of two springs (of equal stiffness 'S') in series is S/2 while in parallel is 2S
B. For a helical spring, deflection is proportional to D3 (D = mean coil diameter) or d4 (d = wire diameter)
C. Crushing load or columns is less than the buckling load
D. Modulus of resilience is proportional to (stress at elastic limit)2
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4
Non-ferrous alloys used for making cutting tools need not have high
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Gage pressure within a spherical droplet of a fluid is 'p'. What will be gage pressure within a bubble of the same size & of the same fluid?
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Out of the following, the most malleable material is
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Compressed dry air is used as the cutting fluid, while machining
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Depreciation of machines fails under the indirect expenses head. As per income tax regulations, it is calculated by the __________ method.
C. Multiple straight line
D. Sum of the years digit
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4
The order of a chemical reaction
A. Can be determined only experimentally
B. Can be determined from the stoichiometry of the reaction
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4
__________ glass is used in the mercury in glass thermometer meant for measuring a temperature of 500°C.
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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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Electrochemical corrosion can occur, only if __________ is present in contact with metal.
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Solute atoms which cause yield point phenomenon in mild steel are/is
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The property of material, by which a given amount of energy is absorbed by it, without plastic deformation, is called
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In the X-ray radiography technique, the tube voltage for thicker plates as compared to thin plates, should be
A. Higher, as it gives higher wavelength
B. Lower, as it gives higher wavelength
C. Higher, as it gives shorter wavelength
D. Lower, as it gives shorter wavelength
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4
Methyl orange indicator turns
A. Orange yellow in alkaline medium
B. Orange yellow in acidic medium
C. Colourless in acidic medium
D. Colourless in basic medium
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4
Diameter of the rivet to be provided on a 20 mm. thick boiler plate will be __________ mm.
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4
Vernier calipers cannot be used to measure the
A. I.D. & O.D. of the shaft
D. Clearance between two mating surfaces
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Most of the phosphorous present in the blast furnace burden enters into
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For preparation of porous bearings by powder metallurgy, preferred particle shape is
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Removal of non-condensable from steam or other vapour is termed as the __________ process.
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Cold chisel & hammers are made of