Mechanical Operations Which of the following agitators having a large blade area, rotating at slow speed is used for mixing high viscosity liquids ( > 50000 centipoise)? Helical screw Flat blade turbine Curved blade turbine Propeller Helical screw Flat blade turbine Curved blade turbine Propeller ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Production rate __________ with increased fineness, with a given energy input to the size reduction machine. Remains unchanged Increases Decreases May increase or decrease; depends on the machine Remains unchanged Increases Decreases May increase or decrease; depends on the machine ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations The energy consumed by a ball mill depends on All of these Its speed Its ball load The density of the material being ground All of these Its speed Its ball load The density of the material being ground ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations A centrifugal filtration unit operating at a rotational speed of w has inner surface of the liquid (density ρL) located at a radial distance R from the axis of rotation. The thickness of the liquid film is δ and no cake is formed. The initial pressure drop during filtration is ½w² . R . ρL(R + 2δ) ½w² . δ² . ρL ½w² . δρL (2R + δ) ½w² . R² . ρL ½w² . R . ρL(R + 2δ) ½w² . δ² . ρL ½w² . δρL (2R + δ) ½w² . R² . ρL ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Wheat is ground into flour in a Fluid energy mill Impact mill Roller crusher Hammer crusher Fluid energy mill Impact mill Roller crusher Hammer crusher ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations The operating speed of a ball mill should be __________ the critical speed. Slightly more than Less than At least equal to Much more than Slightly more than Less than At least equal to Much more than ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS