MECHANICAL ENGINEERING INTERVIEW QUESTIONS

 

1.)What is critical temperature in metals ?

It is the temperature at which the phase change occurs in metals....

2.)Define buckling factor.

 It is the ratio of the equivalent length of column to the minimum radius of gyration.

3.)Explain difference between modulus of resilience and modulus of rigidity ?

 Modulus of resilience is the maximum strain energy stored in a material per unit volume and modulus of rigidity is the ratio of shearing stress to the shearing strain within the elastic limit.

4.)Describe transfer machines in brief.

 It is an automatic machine in which work piece along with fixture is transferred from one station to other automatically and several operation on work piece are performed at each station

 

5.)Difference between Tube and Pipe

• There always a debate between differentiation of pipe and tube. Pipe is always designated by its Inside Diameter (ID) because main purpose of pipe is to carry fluid, while the 
• Tube is always designated by its Outside Diameter (OD). Pipe's thickness is sometimes called as schedule and tube's thickness is gauge.
• As per the tolerance basis, tubes requires higher tolerances as to that of pipe and tubes are more costlier in manufacturing compared to pipe production.

6.)Difference between Flywheel and Governor

The function of flywheel is to store the energy/power produced during the power stroke of an engine and this stored energy is used during remaining stroke to make piston up and down during working of engine while governor tries control the speed of an engine due to variation in load. It does this work by reducing or increasing the amount of fuel passing to the engine.