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Free download in PDF Soldering Multiple Choice Questions and Answers for competitive exams. These short objective type questions with answers are very important for Board exams as well as competitive exams. These short solved questions or quizzes are provided by Gkseries.
(1)
Which of the following filler metals is used in the electrical industry?
[A]
BAG-5
[B]
BAG-3
[C]
BAG-1
[D]
None of these
(2)
Tin-zinc solders are used for joining __________
[A]
Copper
[B]
Zinc
[C]
Aluminum
[D]
Glass
(3)
Addition of ___________ increases the mechanical properties of a tin-lead solder.
[A]
Antimony
[B]
Molybdenum
[C]
Bismuth
[D]
Tellurium
(4)
__________ solders are used for glass-to-glass and glass-to-metal soldering.
[A]
Indium-tin
[B]
Tin-zinc
[C]
Lead-silver
[D]
Cadmium-zinc
(5)
A germanium atom contains
[A]
Four valence electrons
[B]
Five valence electrons
[C]
Only two electrons orbits
[D]
Four protons
Answer: Four valence electrons
(6)
_________ is the process of the solder molecules combining with the molecules of the metals being soldered.
[A]
Wetting
[B]
Desoldering
[C]
Tinning
[D]
Soldering
(7)
The ratio of DC power output to applied input AC power in the rectifier is known as __________.
[A]
Rectifier efficiency
[B]
Ripple frequency
[C]
Ripple factor
[D]
Peak Inverse Voltage
Answer: Rectifier efficiency
(8)
Which of the following filler metals is used for carbide tip brazing?
[A]
BAG-4
[B]
BAG-18
[C]
BAG-1
[D]
BAG-8
(9)
Nickel filler metals are heat resistant up to ________ in short time service.
[A]
1666oC
[B]
982oC
[C]
1204oC
[D]
None of these
(10)
Copper and aluminum can be joined by brazing when _________ alloy is used.
[A]
Aluminum-silicon
[B]
Aluminum-zinc
[C]
Copper-zinc
[D]
Copper-tellurium
(11)
The liquid temperature of the filler metal used in brazing is _________
[A]
427oC
[B]
1000oC
[C]
150oC
[D]
723oC
(12)
What is the solidus temperature of tin-lead solders?
[A]
444
[B]
297
[C]
183
[D]
None of above
(13)
Aluminum can be joined to another aluminum with the use of ________ solder.
[A]
Cadmium-silver
[B]
Lead-silver
[C]
Indium-tin
[D]
Fusible alloy
(14)
A larger resistor has __________ wattage rating.
[A]
Higher
[B]
Lower
[C]
Same
[D]
None of them
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