Mechanical Operations

Size reduction of ice and gypsum can be accomplished suitably by a _______________ crusher?

Byadmin February 18, 2019August 22, 2021

Size reduction of ice and gypsum can be accomplished suitably by a _______________ crusher?

A. Blake jaw
B. Toothed roll
C. Gyratory
D. None of these

Mechanical Operations

Shell and leaf filter as compared to plate and frame filter _____________________?

Shell and leaf filter as compared to plate and frame filter _____________________?

A. Entails less labor cost
B. Facilitates filtration under higher pressure
C. Provides more effective washing
D. All A., B. & C.

Read More Shell and leaf filter as compared to plate and frame filter _____________________?
Mechanical Operations

Production rate _____________ with increased fineness, with a given energy input to the size reduction machine?

Production rate _____________ with increased fineness, with a given energy input to the size reduction machine?

A. Decreases
B. Increases
C. Remains unchanged
D. May increase or decrease; depends on the machine

Read More Production rate _____________ with increased fineness, with a given energy input to the size reduction machine?
Mechanical Operations

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 ?

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 ?

A. 0.5
B. 1.0
C. 2.76
D. 0.66

Read More 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 ?
Mechanical Operations

Critical speed of rotation, N (in rps – rotation per second) of a trammel is equal to (where, g = acceleration due to gravity = 9.81 m/sec2 and, r = radius of trammel, metre.) ?

Critical speed of rotation, N (in rps – rotation per second) of a trammel is equal to (where, g = acceleration due to gravity = 9.81 m/sec2 and, r = radius of trammel, metre.) ?

A. (1/2π). √(g/r)
B. (1/π). √(g/r)
C. ½ √(g/r)
D. 2π. √(g/r)

Read More Critical speed of rotation, N (in rps – rotation per second) of a trammel is equal to (where, g = acceleration due to gravity = 9.81 m/sec2 and, r = radius of trammel, metre.) ?
Mechanical Operations

A fluid energy mill is used for_________________?

A fluid energy mill is used for_________________?

A. Cutting
B. Grinding
C. Ultra grinding
D. Crushing

Read More A fluid energy mill is used for_________________?
Mechanical Operations

Grizzlies are used for separating _____________ solids?

Grizzlies are used for separating _____________ solids?

A. Coarse
B. Fine
C. Any size
D. None of these

Read More Grizzlies are used for separating _____________ solids?

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