Related Questions
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__________ test determines the yield strength, Young's modulus of elasticity, percentage reduction in area & percentage elongation of a material.
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4
Which of the following pairs is not correctly matched?
A. Uranium - 233 : Fertile material
B. Binding energy : Mass defect
C. Scattering: Absorption cross-section
D. Number of nucleons : Mass number
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4
Absolute zero pressure can be attained at a temperature of
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X-rays are
D. Of higher wavelength than visible light
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Austempering process results in the formation of __________ structure.
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The elastic strain energy of a unit length of an edge dislocation as compared to that of a screw dislocation is
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Minimum safe distance between two liquid fuel storage tanks is equal to (where, H = height of the tank)
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Alumina, silica, lime and iron oxide are the basic raw material for the manufacture of Portland cement. The component of Portland cement which first hardens is
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Specific __________ is a dimensionless quantity.
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The softness or hardness of a grinding wheel depends upon the type & amount of bonding material used. For general purpose cutter grinding __________ grinding wheel is normally used.
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4
Leakage in a cooking gas cylinder is detected by
B. Pouring soap solution on the surface and locating the gas bubbles
D. Pungent smell of mercaptans present in the gas
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Heating the Hypo-eutectoid steels to 30°C above the upper critical temperature line, soaking at that temperature and then cooling slowly to the room temperature to form a pearlite & ferrite structure is called
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For grinding of softer materials, the grinding wheel should have __________ grain size.
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'Dikes' are low height walls made around the storage vessels meant for storing hazardous & inflammable material (e.g., petroleum products). Volume of dikes is equal to (where, V = volume of the storage vessel)
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Dislocations are __________ defects.
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4
Air-petrol ratio in an automotive petrol engine is around
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Multistage compression of air as compared to single stage compression offers the advantage of
A. Power saving per unit weight of air delivered
B. Moisture elimination in the inter-stage cooler
C. Increased volumetric efficiency
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4
Which of the following is a commonly used manometric liquid for low pressure range?
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4
Powder metallurgy process does not make metal powder by
D. Electrolytic deposition
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4
The most detrimental impurity in high pressure boiler feed water is
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4
In extrusion of metals, which of the following statement is true?
A. Speed of the extruded material is same as that of ram speed
B. Redundant work is a function of the die angle
C. Relative motion between the billet surface and the container wall is always present
D. Hollow ram is used for indirect extrusion
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4
For a spontaneous natural process at constant temperature and pressure, the free energy of the system always
D. Increases to a maximum before decreasing
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On being hit with a hammer, __________ will readily fracture.
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A particle is settling in a liquid under Stokesian conditions. The free falling velocity of the particle is proportional to
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Earing is a defect found in steels after the following metal working operation.
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Pick out the wrong statement.
A. Weldability of high carbon steel is poorer compared to low carbon steel
B. Invar is a magnetic alloy
C. Magnetic permeability of the diamagnetic material is less than one
D. Martenistic transformation never goes to completion (i.e., 100%) at room temperature
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4
Which of the following is not an explosive?
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The trace metal present in insulin is
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4
Plants produce carbohydrates from the CO2 present in the atmosphere by
B. Photochemical reaction
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Compressed dry air is used as the cutting fluid, while machining