(1/2) × √(σ² + 4τ²)

√(σ² + 4τ²)

(1/2) × [σ + √(σ² + 4τ²)]

σ + √(σ² + 4τ²)

**The speed of the sprocket reduces as the chain pitch __________ for a given number of teeth.****When an open coiled helical compression spring is subjected to an axial compressive load, the maximum…****According to I.B.R., shearing resistance required to shear off the rivet per pitch length (in double…****The fatigue stress concentration factor is defined as****The modulus of elasticity for mild steel is approximately equal to****The form factor of a helical gear __________ with the increase in the helix angle.****The efficiency of a square threaded screw is maximum if the helix angle is equal to (Where φ =…****In cylindrical cams, the follower moves****In designing a sleeve coupling, length of the sleeve is taken as (where d = Diameter of the shaft)****Silver based solder is used for****If d is the normal diameter of a bolt in mm, then the initial tension in kg in a bolt used for making…****Set screws are****A steel containing 0.8% carbon is known as****18/8 steel contains****The maximum shear stress theory is used for****The relation between the pitch of the chain (p) and pitch circle diameter of the sprocket (D) is given…****The ratio of the ultimate stress to the design stress is known as****In order to determine the stresses in a thin cylinder due to an internal pressure, it is assumed that****The belt slip occurs due to****Guest's theory of failure is applicable for following type of materials****The expansion joint is mostly used for pipes which carry steam at __________ pressures.****The resultant axial load on a bolt depends upon****In a marine flange coupling, the pitch circle diameter of bolts is taken as****Two closely coiled helical springs with stiffness k₁ and k₂ respectively are connected…****A bolt of M 24 × 2 means that****For same pulley diameters, center distance, belt speed and belt and pulley materials,****The included angle between the sides of V-belt is****The toughness of a material _________ when it is heated****A tapered key which fits in a key way in the hub and the bottom of which is shaped to fit the curved…****The constant factor in case of R10 series of preferred numbers is**