Question No. 1 Why I-section beam is preferred for heavy loading? Answer: Cross sectional shape I, giving many benefits. It is very good for giving stiffness (less deformation on loading) and to withstand higher bending moments (as a result of heavy loading) on comparison with other cross-sectional shapes of same area. Also, it is very…
Question No. 1 What is Annealing? Answer: It is a process of heating a material above the re-crystallization temperature and cooling after a specific time interval. This increases the hardness and strength if the material. Question No. 2 Define Torque. Answer: Torque is defined as a force applied to an object those results in rotational…
Question No. 1 What is the amount of carbon present in Cast Iron? Answer: Carbon is basically present in the form of cementite in cast iron. Its percentage lies in the range of 2.03-6.67% by weight of cementite for Cast Iron. If the amount is less than the above range than it is stainless steel…
Question No. 1 State the difference between Unilateral and Bilateral Tolerance? Answer: A unilateral tolerance is tolerance in which variation is permitted only in one direction from the specified direction. e.g. 1800 +0.000/-0.060 Bilateral tolerance is tolerance in which variation is permitted in both directions from the specified direction. e.g. 1800 +0.060/-0.060 Question No. 2…
Question No. 1 What are the principal constituents of brass? Answer: Principal constituents of brass are copper and zinc. Question No. 2 What is Curie point? Answer: Curie point is the temperature at which ferromagnetic materials can no longer be magnetized by outside forces. Question No. 3 By which instruments the shear stress in fluids…
Question No. 1 What is mechanical engineering? Answer: Mechanical engineering is the discipline that applies the principles of engineering, physics and materials science for the design, analysis, manufacturing, and maintenance of mechanical systems. It is the branch of engineering that involves the design, production, and operation of machinery and tools. Question No. 2 What is…