- Silicon carbide
- Corundum
- Aluminium oxide
- Boron carbide
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Elastic failure of a material occurs, when the tensile stress equals yield strength, yield point or the elastic limit. Also, the elastic failure occurs according to maximum strain theory, when the maximum tensile strain equals (where, σ = yield strength and E = modulus of elasticity)?
Answer: Option 3 Let'
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The tensile strength of the welded joint for double fillet is (where s = Leg or size of the weld, $$l$$ = Length of weld and $${\sigma _{\text{t}}}$$ = Allowable tensile stress for weld metal)?
Answer: Option 3 Let'
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Which of the following has high tensile strength ?
Answer: Option 2 Let'
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The needle beam method of tunnelling (i) Is suitable for soils in which roof can stand for few minutes without support (ii) Is suitable for brick lining (iii) Is suitable for concrete lining (iv) Requires large number of trench jacks?
Answer: Option 2 Let'
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Welded joint is superior to revetted joint in respect of ease of fabrication, weight and strength. Which of the following joints is the most suitable for pipes carrying fluids under high pressure and temperature?
Answer: Option 2 Let'
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Which of the following grinding mills has the horizontally arranged rods as the grinding elements thereby delivering more uniform granular products with minimum fines?
Answer: Option 2 Let'
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Which of the following crushing laws is most accurately applicable to the fine grinding of materials ?
Answer: Option 3 Let'
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Which of the following is the most suitable filter for separation of abrasive solids suspended in a corrosive liquid?
Answer: Option 3 Let'
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Which of the following conveyors cannot be recommended for transportation of abrasive materials?
Answer: Option 3 Let'
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Cermets are combination of ceramic and metallic materials due to which they have high strength & resistance to high temperature. Cermets are used in the?
Answer: Option 2 Let'
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