Related Questions

State whether the following statement is true or false regarding the drilling using LBM. “Compared to LBM, conventional machining is more accurate and efficient.”
State whether the following statement is true or false regarding the advantages of LBM. “In LBM, difficult to cut machine material can also be machined.”
Number of holes drilled per second depends on the holes diameter.
State whether the following statement is true of false regarding LBM. “In LBM, high intensity laser beams are recommended for more material.”
Conversion factor 32.174 is mostly used for lbf to lbm or lbm to lbf conversion. The above given statement is
Consider the following statements for a power shovel:
(i) Output can be increased by reducing the angle of swing for a given depth of cut.
(ii) For a given angle of swing, output will be maximum at optimum depth of cut.
(iii) Output can be increased by keeping the depth of cut less than optimum depth.
(iv) Output can be increased by increasing the size of shovel.
Without derrick holes can be drilled depth of
In a punching press, the requirement is to punch 40 mm diameter holes in a plate having a thickness of 15 mm. The rate at which the holes should be punched is 30 holes/min. Energy requirement is of 6 N-m per mm2 of sheared area. If the punching takes time 1/10 of a second and the speed of the flywheel varies from 160 to 140 rpm, determine the mass of the flywheel having radius of gyration of 1 m.
In a semiconductor it is observed that three-quarters of the current is carried by electrons and one quarters by holes. If the drift speed is three times that of the holes, what is the ratio of electrons to holes?
Which type of holes can be drilled using Nd-YAG laser?