ECA TEST - 1

Answer the following questions in 50 minutes:

1) Write the steps involved in PCB fabrication ---------------------(4)

2) Describe the process of Dip Soldering in detail-------------------(4)

3) What is Surface Mount Technique? Explain its uses.-------------(4)

4) Differentiate between Thick and Thin film technology.-----------(4)

5) Draw the diagram of common cathode seven segment LED display.

State its working principle.-------------------------------------(4)

6) Draw a neat sketch of General Purpose Relay and label different

parts.-----------------------------------------------------------(4)

All the BEST!!!