Basics in Advanced Machining : Practice MCQ Questions & Answers with Explanations

In Electron beam machining, long production times are required due to the generation of vacuum in the chamber for machining purpose.

The capital equipment cost of the Electron beam machining is high compared to other machining processes.

In Electron beam machining, no limitation is imposed by work piece hardness, ductility, and surface reflectivity.

The main advantages of Electron beam machining are high drilling rates, no mechanical distortion, high accuracy and repeatability.

The tolerances obtained in Electron beam machining is about ± 10 % of the depth of cut.

The frequency of the pulse range between 0.1 and 16000 Hz in Electron beam machining.

Value of the pulse time of beam ranges from 4 to 64000 µs.

Value of the beam energy used for breaking bonds or cross linking them range from 10 to 20kV.

Number of holes produced range from 104 to 105 per second in perforation using EBM.

The depth to diameter ratio in Electron beam machining will vary between 1:1 and 1:15.

Value of the maximum depth that can be drilled using Electron beam machining is about 10 mm.

The maximum value of diameter that can be drilled using Electron beam machining is about 1.5 mm.

Drilling, perforation of thin sheets, slotting and integrated circuit fabrication are some of the applications of Electron beam machining.