For an Oldham coupling used between two shafts, which among the following statements are correct? I. Torsional load is transferred along shaft axis. II. A velocity ratio of 1:2 between shafts is obtained without using gears. III. Bending load is transferred transverse to shaft axis. IV. Rotation is transferred along shaft axis.
A hollow circular shaft of inner radius 10 mm, outer radius 20 mm and length 1 m is to be used as a torsional spring. If the shear modulus of the material of the shaft is 150 GPa, the torsional stiffness of the shaft (in kN-m/rad) is ________ (correct to two decimal places).
A bar of circular cross section is clamped at ends P and Q as shown in the figure. A torsional moment $T$ = 150 Nm is applied at a distance of 100 mm from end P. The torsional reactions $ \left(T_P,T_Q\right) $ in Nm at the ends P and Q respectively are
The cross sections of two hollow bars made of the same material are concentric circles as shown in the figure. It is given that r_{3} > r_{1} and r_{4} > r_{2} , and that the areas of the cross-sections are the same. $ J_1 $ and $ J_2 $ are the torsional rigidities of the bars on the left and right, respectively. The ratio $ J_2/J_1 $ is
Consider a stepped shaft subjected to a twisting moment applied at B as shown in the figure. Assume shear modulus , G = 77 GPa. The angle of twist at C (in degrees) is _____
A hollow shaft of 1 m length is designed to transmit a power of 30 kW at 700 rpm. The maximum permissible angle of twist in the shaft is 1^{o}. The inner diameter of the shaft is 0.7 times the outer diameter. The modulus of rigidity is 80 GPa. The outside diameter (in mm) of the shaft is _______.
A torque T is applied at the free end of a stepped rod of circular cross-sections as shown in the figure. The shear modulus of the material of the rod is G. The expression for d to produce an angular twist θ at the free end is
A solid shaft of diameter, d and length L is fixed at both the ends. A torque, T_{0} is applied at a distance, L/4 from the left end as shown in the figure given below.
The maximum shear stress in the shaft is
A solid circular shaft of diameter 100 mm is subjected to an axial stress of 50 Mpa. It is further subjected to a torque of 10 kNm. The maximum principal stress experienced on the shaft is closest to