WELDING - Quiz

1) Which type of soldering iron copper tip is heated by a forge?

Transformer type electric soldering iron Electric soldering iron Soldering iron (hatchet type) General purpose electric soldering iron

2) What is the application of fine solder?

Soldering brass & copper Galvanized iron sheets Sheet metal application Heaters and general electrical work

3) Which inorganic flux is used in the form powder or mixed with water to clean the iron or steel surfaces?

Ammonium chloride Zinc chloride Phosphoric acid Hydrochloric acid

4) What is the maximum permitted gap between the two joining surface in brazing?

0.06 mm 0.07 mm 0.08 mm 1.00 mm

5) What is the melting temperature of brazing filler rods used to braze in iron and its alloys?

840 Degree Centigrade to 920 Degree Centigrade 850 Degree Centigrade to 940 Degree Centigrade 860 Degree Centigrade to 950 Degree Centigrade 880 Degree Centigrade to 960 Degree Centigrade