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Un-Answered Questions { Mechanical Engineering }

Why efficiency of gas turbines is lower compared to i.c. Engines ?

1109


For conduction of heat, the instantaneous rate of heat flow is product of three factors. What are these ?

957


Ultimate analysis of coal is elementary analysis. What it is concerned with ?

1175


Under what circumstances would there be an increase in pressure in a diver¬gent nozzle ?

1070


What are orthotropic materials ?

1162


Under what condition a convergent divergent nozzle required ?

1051


What is a converter reactor ?

1141


What is the difference between isotropic material and homogeneous material ?

1229


Explain the difference between the points of inflexion and contraflexure?

1096


What are whiskers ?

1121


As compression ratio increases, thermal n increases. How is thermal n affected by weak and rich mixture strength ?

1217


Why supercritical boilers use less amount of steel compared to non-supercritical boilers ?

1087


Which factors influence the type of fracture in failure of a material ?

1067


Which heating value is indicated by a calorimeter and why ?

1146


Which pollutant is major greenhouse gas and what is its effect ?

1056