ISRO Scientist or Engineer Mechanical 2018
For the following questions answer them individually
Torque, Tis applied at the free end of a stepped rod of circular cross-section as shown in figure. If the shear modulus of the material is G, the angular twist, $$\theta$$ at free end will be
In mostbrittle materials, the ultimate strength in compression is larger than the ultimate strength in tension due to
If the natural frequency of a spring mass system on earth is f, its natural frequency on moon where acceleration due to gravity is one-sixth of that on earth will be
A solid shaft can resist a bending moment of 6 KN-m and a torque of 8 kN-m applied together. The maximum torque that the shaft can resist when applied alone is
Two shafts of the same length and material are connectedin series, if the ratio of their diameters is 2, then the ratio of their angles of twist will be
A concentrated load of F acts on a simply supported beam of span L at a distance of $$\frac{L}{3}$$ from left support, the bending momentat this location C is
A truck hauls a trailer at 60 km/hour when exerting a steady pull of 600 N. If the work is done for 40 minutes, the power required is
A perfectly balanced rotor shaft supported between short bearings at both ends shows a deflection of 2mm at middle. Then the critical speed of the shaft in rom will be nearly,
