SOLDERING DE SOLDERING AND VARIOUS SWI - Practice Mode

1) How many types of soldering is used for joining metal surfaces?

Two Five Four Three

Correct Answer: Two

2) What is the full form of the abbreviation SPDT used in switches?

Single Phase Dual Throw Single Pole Single Throw Single Pole Double Throw Shared Pole Double Throw

Correct Answer: Single Pole Double Throw

3) Which ratio of tin-lead combination is used for electronic component soldering work?

40:60 20:40 60:40:00 63:37:00

Correct Answer: 60:40:00

4) When does the rosin flux melts in a soldering process?

After the solder melts When the solder is melting During the solder is melting When the solder is heated

Correct Answer: When the solder is heated

5) What is the additional advantage of rosin flux used for soldering electronic components?

It is non-conductive It is good conductor It is a chemical paste Inorganic acid in nature

Correct Answer: It is non-conductive

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