Un-Answered Questions { Mechanical Engineering }

What does following alloy designation indicate fg 250 ?

741


What is the difference between proof resilience and modulus of resilience ?

696


Mention two types of dislocations.

657


List two effects of manganese in plain carbon steels?

575


Which parameter remains constant in isochoric process ?

643


What is allotrope ? In what forms of cubic pattern, iron exists ?

614


Which reactor uses heavy water as moderator ?

653


What are the names given to constant temperature, constant pressure, constant volume, constant internal energy, constant enthalpy, and constant entropy processes.

595


How the analyses and calorific values of fuels can be reported ?

622


How the thickness of thermal boundary layer and thickness of hydrodynamic boundary layer related ?

615


In which process fluid expands but does no work ?

635


Why fatigue strength decreases as size of a part increases beyond around 10 mm?

756


What should be done to prevent a safety valve to stick to its seat ?

637


Explain the difference between grey iron and white iron. What is mottled iron ?

611


Whether entropy is intensive property or extensive property ?

624