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Electronics Mechanic
SOLDERING DE SOLDERING AND VARIOUS SWI
Set 4
Set 4
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Q4483
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Which soldering instrument has hot air blowing facility?
A
Soldering iron
B
Soldering station
C
Wave soldering machine
D
Temperature controlled soldering iron
Q4484
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What is produced by the power supply connected soldering iron?
A
Fire
B
Heat
C
Cool air
D
Water vapour
Q4485
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What is the purpose of flux in soldering electronic circuit components?
A
Form the oxide layer
B
Reduce the solder cooling time
C
Increase the melting temperature of solder
D
Dissolve the oxide layer on the metal surface
Q4486
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Which gauge number of rosin-cored solder is suitable for soldering medium sized joints?
A
16 gauge rosin cored
B
18 gauge rosin cored
C
22 gauge rosin cored
D
24 gauge rosin cored
Q4487
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How the flux residue is removed after soldering a joint?
A
Water
B
Petrol
C
Organic flux
D
Isopropyl alcohol
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