Soldering Intro

Multiple Choice

Which of the following is an essential tool used in hand soldering?

• Soldering iron

• Multimeter

• Oscilloscope

• Wire stripper

Multiple Choice

What are the four key elements required for soldering?

• Iron, Solder, Flux, Component

• Iron, Copper, Lead, Wire

• Solder, Lead, Tin, Wire

• Flux, Lead, Tin, Copper

Fill in the Blanks

Electronic components are usually packaged in a discrete form with two or more connecting leads or metallic

.

Multiple Choice

Which of the following statements best describes an active component?

• A device that requires an external source to operate

• A device that stores energy

• A device that only connects circuits

• A device that does not require voltage

Multiple Choice

Which of the following are considered passive components?

• Resistor, Capacitor, Inductor

• Diode, Transistor, SCR

• Resistor, Diode, Transistor

• Capacitor, SCR, Inductor

Multiple Choice

Which of the following is NOT a function of flux during soldering?

• Remove oxide

• Prevent from re-oxidation

• Increase melting point

• Reduce surface tension

Multiple Select

Which of the following statements about the construction of cored solder is/are correct?

• Cored solder contains a core of flux inside the solder metal.

• The flux in cored solder is a mix of resins, activators, wetting agents, and corrosion inhibitors.

• Cored solder is only available in lead-based varieties.

• Both Sn-Pb and PbFree series can be used for cored solder.

Fill in the Blanks

The most commonly used solder alloy is

/Pb40.

Multiple Choice

Which of the following types of flux cores is mainly used for electronics?

• Acid core

• Rosin core

• RMA core

• RA core

Multiple Choice

Which gauge number corresponds to a solder wire diameter of 0.711 mm?

• 16

• 18

• 21

• 22

Multiple Select

Select all the correct statements about soldering irons:

• The iron tip shape should be chosen based on the application.

• All soldering irons have the same power capacity.

• Ceramic heaters are weak to impact or shock.

• Weller irons are better for Pb Free or large joints.

Fill in the Blanks

A soldering iron tip is mainly made up of a

core to ensure good heat transfer.

Multiple Choice

Which type of soldering iron tip is most suitable for precision electronics work and why?

• Bevel tip

• Chisel tip

• Conical tip

• Flat tip

Multiple Choice

Which of the following is NOT a precaution to be taken at a soldering station?

• Always keep the working table clean

• Check the Sn% of the solder

• Fix the iron holder and check the iron tip

• Leave the soldering iron on the table when not in use

Multiple Select

Which of the following are essential safety rules for soldering in the classroom?

• Always wear safety glasses

• Never touch the metal part of the soldering iron

• Do not leave a powered iron unattended

• Use your fingers to hold components

Fill in the Blanks

The correct posture when soldering should keep your eyes at least

cm above the work.

Multiple Choice

Which handling method for cored solder wire is suitable for a continuous process?

• Holding the wire 50-100mm from the end

• Holding the wire less than 2 inches from the end

• Holding the wire with both hands

• Not feeding the wire continuously

Multiple Choice

Which of the following topics is NOT listed in the contents of the Hand Soldering Training session?

• Inspection + Handling

• Soldering Iron

• Soldering Process

• Printed Circuit Board Design