In the blast furnace, incorporation of water vapour in the blast gives the following effect ?

Related Mcqs:

Pick out the correct combination about the role of various additives used in polymers ?

A. Plasticiser: increases the polymer strength B. Heat stabiliser: increases the maximum service temperature C. Fillers: Does not affect the property of polymer but increases its weight D. Lubricants: increases the flexibility of polymers...

Dowtherm is a____________________?

A. High temperature heating medium (a petroleum product) B. Product of coal tar distillation C. Very heat sensitive material D. None of these...

Carbon is present in the form of _______________________ in grey cast iron ?

A. Spheroids B. Nodular aggregates of graphite C. Flakes D. Cementite...

Coating thickness in case of galvanising of steel sheet generally corresponds to the deposition of _______________ gms of zinc per m2 of steel strip ?

A. 5-10 B. 1000-1500 C. 120-500 D. 1500-3000...

Difference at any instant between the value of the controlled variable and the set point is called the__________________?

A. Deviation B. Derivative time C. Error ratio D. Differential gap...