Q801
Open questionWhich of the following is not an ore of iron?
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Q802
Open questionWhich of the following pairs regarding the effect of alloying elements in steels are not matched correctly?
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Q803
Open questionCorrosion of metals can not be prevented by its
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Q804
Open questionWhich of the following materials has the least scrap value?
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Q805
Open questionA semi-conductor is damaged & behaves like a conductor, on passing a strong electric current through it, because it heats up the crystals & breaks the covalant bonds resulting in __________ electrons.
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Q806
Open questionInertial forces are obtained, when the elastic forces are multiplied by __________ number.
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Q807
Open questionLubricants can be used to
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Q808
Open questionLubrication is done to control
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Q809
Open questionIn case of compression of one kg of air, the work done will be the least, when the value of polytropic index 'n' is
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Q810
Open questionLarge diameter reinforced cement concrete (RCC) pipes are generally joined by __________ joint.
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Q811
Open questionA pipeline buried in soil is commonly protected from corrosion by
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Q812
Open questionWhich of the following is not the commercial name of polymethyl-methacrylate (PMMA)?
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Q813
Open questionThe routing function in a production system design is concerned with the
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Q814
Open questionWhat is the percentage of chromium in 18-4-1 high speed steel?
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Q815
Open questionWhich is the most suitable joint for the pipes, with are laid submerged under water, where the bottom of the river bed is uneven?
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Q816
Open questionIn an eutectic system, two elements are completely
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Q817
Open questionUnbreakable crockeries are made from __________ polymers.
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Q818
Open questionSquare steel key is normally strong in failure by shear & crushing. Keys are normally made of __________ steel bars.
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Q819
Open questionAn engineer's hammer is made of high __________ steel.
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Q820
Open questionMagnesium is present in
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