- Electronic Devices and Circuits - Section 1
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- Electronic Devices and Circuits - Section 3
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Electronic Devices and Circuits - Engineering
Q1: For a photoengraving the mask used isA master mask
B slave mask
C working mask
D photo mask
ANS:C - working mask The mask that is prepared first is called the master mask made from glass substrates covered by thin chromium film. From the master masks are prepared working masks by contact pointing and used for Photolithography which means Photo engraving. |


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