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A set of jobs A, B, C, D, E, F, G, H arrive at time t = 0 for processing on turning and grinding machines. Each job needs to be processed in sequence - first on the turning machine and second on the grinding machine, and the grinding must occur immediately after turning. The processing times of the jobs are given below. Job A B C D E F G H Turning (minutes) 2 4 8 9 7 6 5 10  Grinding (minutes)  6 1 3 7 9 5 2 4 If the makespan is to be minimized, then the optimal sequence in which these jobs must be processed on the turning and grinding machines is
Grinding wheel made of silicon carbide is most suitable for grinding materials of low tensile strength (e.g; tough bronze). Grinding is a __________ operation.
Consider the following statements with reference to grinding wheel characteristics: 1. Aluminium oxide and silicon carbide are used for making the grinding wheels. 2. Rubber bonds are used for making flexible wheels 3. The grade of a wheel is determined by the strength of the bonding materials 4. Negative rake angles are used for grinding of high-strength materials Which of the above statements are correct?
The softness or hardness of a grinding wheel depends upon the type & amount of bonding material used. For general purpose cutter grinding __________ grinding wheel is normally used.
The softness or hardness of a grinding wheel depends upon the type & amount of bonding material used. For general purpose cutter grinding __________ grinding wheel is normally used.
What is suggested by the language and imagery in the following poem by Whitehead Hicky ? I hear them grinding , grinding through the night , The gaunt machines with arteries of fire, Muscled with iron, bowelled with smouldering light"
A. __________ mill is a revolving mill divided into two or more sections by perforated partitions in which preliminary grinding takes place at one end and the finishing grinding at the discharge end.
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
Which of the following grinding mills has the horizontally arranged rods as the grinding elements thereby delivering more uniform granular products with minimum fines?
In closed circuit grinding as compared to open circuit grinding, the