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Which of the following stresses are associated with the tightening of a nut on a bolt? P. Tensile stress due to the streching of bolt Q. Bending stress due to the bending of bolt R. Torsional shear stress due to frictional resistance between the nut and the bolt Select the correct answer using the codes given below.
Which of the following stresses are associated with the tightening of a nut on a bolt? P. Crushing and shear stress in threads Q. Bending stress due to the bending of bolt R. Torsional shear stress due to frictional resistance between the nut and the bolt Select the correct answer using the codes given below:
Consider the following statements regarding typical analysis of bolt failure :  1. 15% failure of bolt occur at the fillet under the head. 2. 50% failure of bolt occur at the end of threads on the shank. 3. 80% failure of bolt occur in the threads that are in contact with the nut. Which of the above statements is/are correct ?
If a fastener is threaded into a tapped hole, then the fastener is likely to be called as
When a bolt and nut is made of mild steel, then the effective height of nut is made equal to (where d = Nominal diameter of bolt)
A wall bracket is attached to the wall by means of 2 identical bolts, one at A and one at B. The force of 20kN acts at a distance of 400mm. Bolt A lies at a distance of 50mm from axis of tilt and bolt B 500mm. Allowable shear stress in the bolts is 100N/mm² and tensile is 40N/mm². Find the radius of Mohr circle which can be made from the shear stress and tensile stress acting on bolts.(Consider bolt under max stress and area of bolt is A)
Nominal bearing strength of bolt is 2.5kbdtfu where kb depends on (i) end distance, (ii)pitch distance, (iii)ultimate tensile stress of bolt, (iv)shank area of bolt, (v)yield stress of bolt, (vi)diameter of hole
What is the output from differential screws when pitch of the two screws is 12mm and 8mm? Also the nut is rotated by applying a force of 120N at a radius of 300mm and the two screws remain stationary. The torque of raising and lowering for the two screws is 5k N-mm and 2.5k N-mm where k is the effective axial weight on the screw.
What is the efficiency of differential screws when pitch of the two screws is 12mm and 8mm? The nut is rotated by applying a force of 120N at a radius of 300mm and the two screws remain stationary. The torque of raising and lowering for the two screws is 5k N-mm and 2.5k N-mm where k is the effective axial weight on the screw.
If the nut rotated in clockwise direction and advances axially, then threads present in nut are