Mcq for ball mill

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MCQs ; In case of a ball mill, Question. In case of a ball mill, A. Coarse feed requires a larger ball. B. Fine feed requires a larger ball. C. Operating speed should be more than the critical speed. D. None of these. Explanation : Explanation Not Provided. In case of a ball mill

Mechanical Operations. Question 236. In case of a ball mill, A. Coarse feed requires a larger ball. B. Fine feed requires a larger ball. C. Operating speed should be

Which of the following gives the work required for size reduction of coal to -200 mesh in a ball mill most accurately ? A. Rittinger's law. B. Kick's law

May 05, 2021 22. For effective operation of ball mill the ball charge (% volume of mill filled by the balls) should be (a) 60–70% (b) 30–50% (c) 30% (d) 50%; 23. Critical speed of the ball mill is the speed at which (a) Balls begin to centrifuge with the mill (b) Balls cascade over one another (c) Balls are carried up the sides and fall freely onto

This Mechanical Operations Multiple Choice Questions is ideal for Students who are in Second Year of Diploma in Chemical Engineering courses. By referring Mechanical Operations Mcq Pdf for Diploma you will get to know about the paper pattern of Msbte Mcq Winter 2021 exams. ... Ball mill (C) Roll crusher (D) Gyratory crusher . Correct! Wrong

May 01, 2021 5. Ball Mill operates at the speed of? a. Low speed b. High speed c. Optimum speed d. All of the above Ans: c. 6. Fluid Energy Mill works on the principle of: a. Impact & Attrition b. Rotor & Stator c. Compression d. Attrition Ans: a. 7. Fibrous drugs are milled by using: a. Cutter Mill b. Hammer Mill c. Fluid Energy Mill d. Ball Mill Ans: a. 8

Milling Machine Multiple Choice Questions and Answers for competitive exams. These short objective type questions with answers are very important for Board exams as well as competitive exams. These short solved questions or quizzes are provided by Gkseries

RETSCH is the world leading manufacturer of laboratory ball mills and offers the perfect product for each application. The High Energy Ball Mill E max and MM 500 were developed for grinding with the highest energy input. The innovative design of both, the mills and the grinding jars, allows for continuous grinding down to the nano range in the shortest amount of time - with

2. Wear and tear in wet crushing is more than that in dry crushing of materials. 3. Size enlargement (opposite of size reduction) is not a mechanical operation. 4. A 'dust catcher' is simply an enlargement in a pipeline which permits the solids to settle down due to reduction in velocity of the dust laden gas. Correct

Mar 31, 2021 Size reduction is a process of reducing large unit masses into small unit masses like the coarse or fine particles. Size reduction is also known as comminution or diminution or pulverization. Generally this process is done by two methods: Precipitation method:- In this method, the substance is firstly dissolved in an appropriate solvent and then after it is finely

The energy consumed by a ball mill depends on_____? A. Its speed B. Its ball load C. The density of the material being ground D. All A., B. and C. Mcq Added by: ... PakMcqs.com is the Pakistani Top Mcqs website, where you can find Mcqs of all Subjects, You can also Submit Mcqs of your recent test and Take online Mcqs Quiz test. INFO. Home

In ball mill, the size of food grains is reduced due to : A. Crushing: B. Shearing: C. Impact: D. ... In attrition mill, the size of food grains is reduced due to; In hummer mill, the force applied on grains is cut by ... Furthermore, you can discuss a MCQs on discussion page. We also accept requests for mcqs HERE. Contributions through files

250+ TOP MCQs on Wood Chips Preparation and Handling at the Pulp Mill and Answers A closed tank containing water is moving in a horizontal direction along a straight line at a constant speed. The tank also contains a steel ball and a bubble of air

250+ TOP MCQs on Advantages of Ball Mill and Answers. Mechanical Operations Multiple Choice Questions on “Advantages Of Ball Mill”. 1. ____ is an open container usually cylindrical with uniform openings. Clarification: A screen can be called as an open container usually cylindrical with uniform openings, it is normally made of wire mesh cloth

Mechanical Operations MCQ’s – Ball Mill. 1 - Question. What is the average particle size of ultra-fine grinders? a) 1 to 20 m b) 4 to 10 m c) 5 to 200 m d) 50 to 100 m. View Answer & Solution. Answer: a Explanation: The particle averaging 1 to 2 m in size with substantially all particles through a standard 325 mesh screen

in case of a ball mill mcq - ataFinch A. It is abrasive to the coal pulveriser (i.e.ball mill) and the combustion chamber B. The ash in molten condition gets absorbed in the pores of the refractory lining of the furnace and causes its spalling due to different co-efficient of expansion/contraction of the refractory and the ash C Home Blog

Mechanical Operations MCQ Question 6: A ball mill is used for grinding a powder from 50 m to 10 m. If the diameter of ball mill is 100 mm, the diameter of the ball is 10 mm and operating speed is 50% of critical speed then calculate the operating speed in rpm and expressed upto third decimal place. Use gas 9.8 m/s 2