SSC JE Mechanical Engineering 23rd Jan 2018 Shift-1

A steel rod whose diameter is 2 cm and is 2m long experience heating from $$30^\circ to 150^\circ$$ . The coefficient of thermal expansiom is $$\alpha =12\times 10^{-4} / ^\circ C $$and the rod has been restricted in its original position .The thermal stress developed is 288 MPs.what is the value of young modulus $$ (GP_{a}) $$

Choose the INCORRECT conditions for the thermal stress in a body

The formula of Eulers bucklings load is given as $$\frac{\pi^{2}El}{4L^{2}}$$.This is True which of the following columns?

Describe the shape of the elliptical curve between the supports B and C for the beam as shown in the figure below?

The elongation (mm) in a steel bar having a square cross section of dimension 40 mm $$\times$$ 40 mm is 2.5 mm and is subjected to an axial compressive load of P (kN). If the length of the bar is 4 m and modulus of elasticity is E=250 GPa. What is the value of P (kN)?

The property of a material states that it is rigid. The value of Poisson’s ratio for this particle is ________.

Consider the loaded beam as shown in the figure below

choose the correct option for the bending moment diagram of the beam above

Calculate the total angle of twist for a stepped shaft which is subjected to the torque (T) as shown in the figure below ?

A cross sectional bar of area 700 mm$$^{2}$$ is subjected to an axial load as shown in the figure below .what is the value of stress (MPa) in the section QR?

Choose the CORRECT equation which defines the relationship between the Young’s Modulus (E), Bulk modulus (K) and Poisson’s ratio (u)