A screen is said to be blinded, when the___________________?

Related Mcqs:

Dust collection efficiency of electrostatic precipitator can be as high as 99.9%. Maximum temperature and pressure of dust laden gas that can be cleaned in an electrostatic precipitator is respectively ?

A. 200°C and 5 atm B. 1000°C and 10 atm C. 500°C and 50 atm D. 1000°C and 500 atm...

Use of grinding aids results in the ___________________?

A. Enhanced production rate B. Finer products C. Both A. & B. D. Neither A. nor B....

Reciprocating screens are normally inclined at an angle of 5° with the horizontal and employ gyratory motion at feed end & reciprocating motion at the discharge end. They are not suitable for the screening of the ___________________?

A. Light metal powder down upto 4 mesh size B. Dry chemicals C. Heavy tonnages of rocks or gravel D. Powdered food & granular materials...

Ultracentrifuges running at speeds upto 100000 rpm is normally used for the_____________________?

A. Separation of isotopes based on their density or molecular weights difference B. Concentration of rubber latex C. Separation of cream from milk D. Dewaxing of lubricating oil...

Froth floatation is the most suitable for treating ____________________?

A. Iron ores B. Sulphide ores C. Quartzite D. None of these...