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Q. Process of Alloy Materials Sampling?
The following alloy-materials require a minimum of 10% per lot representative PMI sampling. If any incorrect material is found in representative sample basis testing, 100% PMI verification shall be required.
• Tubular products used in the fabrication of equipment, such as heat exchangers and boilers, provided that traceable mill certification is available.
• Fired heater, heat exchanger, and boiler internals example: tube hangers, tube supports, and tube-sheets. Internals which are part of the supports in fired heaters and boilers are also included in the PMI program.
• All alloy steel bolting, fasteners and nuts.
• Ring joint flange and clamp type (e.g., Grayloc) connector flange gaskets.
• Internal non-pressure-containing parts. Metallic alloy components for refractory linings (e.g., refractory anchors and hex mesh) shall be covered under this requirement.
Prepare a design of close coiled helical compression spring for a service load ranging from 2250 N to 2750 N. The axial deflection of the spring for the load range is 6 mm. Conside
inertia force?
Consider some publications of the Bureau of Standards. The following publications of the Bureau of Standards shall be read along with this section of footings. a. IS 456 in
How can punching shear failure are characterised in bearing capacity? Punching Shear Failure This mode of failure is characterised by large deformations beneath the footing
Q. Explain about Active Fire Protection? Active Fire Protection - A fire fighting system that is normally dormant and is activated automatically upon detection of a fire hazard
Illustrate any three of the following : (i) Critical Damping (ii) Logarithmic decrement (iii) Vibration Isolation (iv) Equivalent stiffness of spring in series and in p
diameter = 100mm length = 470mm power = 4000 w radians = 78 shear modulus 60000 n/mm^2 determin the maximum shear stress and angle of twist
Arm of Couple: Explain couple and Arm of couple? Sol.: If the two equal and opposite parallel forces (that is equal and unlike) are acting on a body, they do not have a
V icke r ' s Hardness Test: This test is alike the Brinell test but uses different indenter. A square based pyramid of cone angle 136 ° is used. The applied load can be 5,
Q. Why are magnetic field system employed in practical electromechanical energy conversion devices rather than electric field systems? Ans. In case of magnetic field sys
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