Stressed parts are always kept in tension.
Explanation: Cast iron has more compressive strength.
Shot blasting process improves the endurance limit of the component.
Explanation: Shot blasting employs throwing wheel which imparts strength to the material.
Which process allows controlling grain structure of the product?
Explanation: In casting metal is in fluid state and hence impossible to control the grain structure.
While designing a forging, the profile is selected such that the fibrous lines are parallel to the tensile forces and perpendicular to shear forces.
Explanation: Tensile load is applied parallel to the grain structures.
Cast surfaces have good finishing.
Explanation: Cavity is surrounded by sand and hence not good finish is obtained.
In forging, metal is in which of the following stage?
Explanation: Forging is the working of metal in plastic range.
Forged components can be held between close limits.
Explanation: There is no shrinkage problems and hence less tolerances.
Among casting, forging and forging which has the slowest rate of production?
Explanation: Machining each part is very time consuming.
In manual assembly, cost of screw is higher than the cost of driving a screw.
Explanation: Generally manufacturing screw is cheaper than driving it.
Maximum carbon content in welding is usually limited to
Explanation: With increase of carbon, welding becomes difficult as weld becomes susceptible to cracks.