18 Questions
What is the condition for maximum power transfer in a circuit?
Load resistance is equal to the source resistance
What is the advantage of the Float Zone method in silicon crystal growth?
Higher purity of the silicon crystal
What type of etching process uses a chemical reaction between etchant gases to attack the material surface?
Chemical Dry Etching
Which of the following is an example of a bottom-up approach for preparing nanomaterials?
Dip pen nano-lithography
Which of the following is NOT a type of lithography technique?
Microfluidic lithography
What is the relationship between the melt and the growing crystal in the Czochralski method?
The crystal is partially submerged in the melt
What is the primary mechanism of material removal in EDM?
Mechanical abrasion
How does the capacitance in an RC circuit affect the EDM process?
It affects the discharge energy and duration
What is the minimum requirement for a material to be machined using EDM?
It should be a conductor
What is the percentage of supply voltage that the discharge voltage should be for maximum power delivery in an RC relaxation circuit?
72%
In what type of environment is electron beam machining possible?
In a vacuum
What is the full form of EBM in advanced machining processes?
Electron Beam Machining
What is the estimated energy required to vaporize tungsten?
3 x 10^4 joules/cm3
Which type of photoresist is typically used for high-resolution patterns in microstructure fabrication?
Positive photoresist
What is the primary purpose of lithography in microstructure fabrication?
To transfer a pattern onto the substrate
In plasma-assisted etching, what is the role of the mask?
To define the areas that will be etched away
What does the Maximum Power Transfer Theorem state?
Maximum power is transferred when the load resistance is equal to the source resistance
How many groups of variables can be formed from a dimensionally homogeneous equation with n variables and m primary dimensions?
n - m
Solve a series of engineering problems, including estimating the time required to drill a through hole and forming non-dimensional parameters from a dimensionally homogeneous equation. Test your skills in physics and mathematics.
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