The notch sensitivity q is expressed in terms of fatigue stress concentration factor Kf and theoretical stress concentration factor Kt as
(Kf + 1)/ (Kt + 1)
(Kf - 1)/ (Kt - 1)
(Kt + 1)/ (Kf + 1)
(Kt - 1)/ (Kf - 1)
- The value of Lewis form factor used in design of gears is
- Which of the following statement is wrong?
- The temperature required for full annealing in hypereutectoid steel is
- The process which improves the machinability of steels, but lowers the hardness and tensile strength…
- If T₁ and T₂ are the tensions on the tight and slack sides of the belt respectively, and…
- When the shaft rotates in anticlockwise direction at slow speed in a bearing, it will
- In designing a flange coupling, the pitch circle diameter of bolts is taken as (where d = Diameter of…
- Set screws are
- The modulus of elasticity for mild steel is approximately equal to
- Which of the following is not correct procedure to increase the fatigue limit?
- In unilateral system of tolerance, the tolerance is allowed on
- A double fillet welded joint with parallel fillet weld of length l and leg s is subjected to a tensile…
- In case of pressure vessels having closed ends, the fluid pressure induces
- Which of the following has threads at both ends?
- According to I.B.R., when the thickness of boiler shell (t) is greater than 8 mm, then the diameter…
- When the connected members are very yielding (soft gasket) as compared to the bolt, then the resultant…
- When the screw in a mechanical screw jack rotates, the load kept on the top of it moves
- When compared to the rod of the same diameter and material, a wire rope
- The building up of worn and undersized parts, subjected to repeated loads by electroplating is
- The permissible stress for carbon steel under static loading is generally taken as
- If a spring is cut down into two springs, the stiffness of cut springs will be
- The piston pin bearings in heavy duty diesel engines are
- The velocity factor for precision metallic gears cut with high accuracy and operating at velocities…
- For hardening alloy steels and high speed steels, they are heated to
- The application of third type levers is found in
- The material generally used for aircraft components is
- In second type of levers,
- The strength of a riveted joint is equal to
- Which of the following property is essential for spring materials?
- In thrust bearings, the load acts