Q. For a sphere falling in the constant drag co-efficient regime, its terminal velocity depends on its diameter (d) as

View solution

Q. Screen capacity is expressed in terms of

View solution

Q. A screen is said to be blinded, when the

View solution

Q. What is the critical rotation speed in revolutions per second, for a ball mill of 1.2 m diameter charged with 70 mm dia balls ?

View solution

Q. Percentage of drum submerged in the slurry in case of rotary drum filter is

View solution

Q. Filter medium resistance is that offered by the

View solution

Q. Separation of solid suspended in liquid into a supernatant clear liquid and a denser slurry employs a process termed as the

View solution

Q. Ultrafine grinders operate principally by

View solution

Q. Which of the following comes in the category of primary crusher for hard and tough stone ?

View solution

Q. Crushing efficiency of a machine ranges between __________ percent.

View solution

Q. __________ conveyors are also called scrapers.

View solution

Q. For laminar flow of filtrate through the cake deposited on septum, which of the following will be valid ?

View solution

Q. Which of the following is a continuous filter?

View solution

Q. During washing of filter at the end of constant pressure filtration, the rate of washing equals the rate of filtration

View solution

Q. In screen analysis, the notation +5 mm/-10 mm means particles passing through

View solution

Q. Solid particles of different densities are separated by

View solution

Q. During agitation of liquids, power consumption during laminar flow is not proportional to the

View solution

Q. Trommels are revolving screens which normally operate in the range of __________ rpm.

View solution

Q. The value of work index does not change materially from one equipment to another. If the value of work index determined for close circuit grinding is Wᵢ, then the same for open circuit grinding will be

View solution

Q. Maximum size reduction in a fluid energy mill is achieved by

View solution