Answer:
abrir candados y abrir puertas
Explanation:
Answer:
a. Tm = 0.3192min.
b. MRR = 396.91mm^{3}/s.
Explanation:
<em>Given the following data</em>;
Drill diameter, D = 12.7mm
Depth, L = 60mm
Cutting speed, V = 25m/min = 25,000m
Feed, F = 0.30mm/rev
<u>To find the cutting time;</u>
Cutting time, Tm =?
.......eqn 1
<em>We would first solve for the feed rate (F);</em>
.......eqn 2
<em>But we need to find the rotational speed (N);</em>
N = 626.57rev/min.
Substiting N into eqn 2;
Fr = 626.57 * 0.30
Fr = 187.97mm/min.
Substiting F into eqn 1;
Tm = 0.3192min.
<em>Therefore, the cutting time is 0.3192 minutes.</em>
<u>For the material removal rate (MRR);</u>
<em>Time in seconds, we divide by 60;</em>
MRR = 23814.54/60 =396.91mm^{3}/s.
<em>Therefore, the material removal rate (MRR) is 396.91mm^{3}/s.</em>
Answer:
ROLAP is a branch of OLAP that is used to contain Relational database ( RDB ). which is a very fast database ( quick process of queries )
- Very fast to access and also fast in processing queries
- provides multidimensional view of data / supports multidimensional database schema with RDBMs
- supports large databases
Explanation:
ROLAP ( Relational On-line Analytical processing ) is a branch of OLAP that is used to contain Relational database ( RDB ).
<u>Advantages of ROLAP ( reasons for the use of ROLAP )</u>
- Very fast to access ( fast in processing queries )
- provides multidimensional view of data / supports multidimensional database schema with RDBMs
- supports large databases