Increasing the length of bar

Decreasing the cross-sectional area of the bar

Decreasing the modulus of elasticity of the bar

All of the above

**The backlash for spur gears depends upon****The ultimate strength of steel in tension in comparison to shear is in the ratio of****Factor of safety for fatigue loading is the ratio of****In skew bevel gearing, the axes of shafts are****The arms of the pulleys for flat belt drive have****The size of a gear is usually specified by****The draw of cotter should not be more than****When a circular beam of diameter d is subjected to a shear force F, the maximum shear stress induced…****Tearing resistance required to tear off the plate per pitch length is (where p = Pitch of rivets, d…****Two helical springs of the same material and of equal circular crosssection, length and number of turns,…****When the belt is transmitting maximum power, the belt speed should be****The notch sensitivity q is expressed in terms of fatigue stress concentration factor Kf and theoretical…****The suitable material for belt in agricultural machinery is****A screw is said to be over hauling screw, if the****When the speed of belt increases,****Jam nut is a locking device in which****Cast iron pipes are mainly used****For steel, the ultimate strength in shear as compared to ultimate strength in tension is****When compared to the rod of the same diameter and material, a wire rope****If P1 and P2 are the tight and slack side tensions in the belt, then the initial tension Pi (neglecting…****The face of the tooth is the****The effective stress in wire ropes during normal working is equal to the stress due to****Lewis equation in gears is used to find the****Lewis form factor for 14 ½° composite and full depth involute system is (where T = Number…****A column is known as a long column if the slenderness ratio is****In a horizontal flat belt drive, it is customary to use****The property of a material which enables it to resist fracture due to high impact loads is known as****In worm gears, the pressure angle is ________ the angle between two inclined faces in axial plane.****While designing a screw in a screw jack against buckling failure, the end conditions for the screw are…****In hydrodynamic bearings**