Soldering is a process in which two or more metal items are joined together by melting and flowing a filler metal into the joint, the filler metal having a relatively low melting point. Solder is an alloy of 50% Lead & 50% Tin.
Soldering is distinguished from brazing by use of a lower melting-temperature filler metal; it is distinguished from welding by the base metals not being melted during the joining process. In a soldering process, heat is applied to the parts to be joined, causing the solder to melt and be drawn into the joint by capillary action and to bond to the materials to be joined by wetting action. After the metal cools, the resulting joints are not as strong as the base metal, but have adequate strength, electrical conductivity, and water-tightness for many uses.
7) Solder is an alloy of
Answer is:
Lead and Tin
Explanation:
Related ISRO Technician-B Fitter Question Paper - 2016 (Set - 1) with Answer Key
Answer is:
Diamond
Explanation:
Diamond is the hardest naturally occurring substance found on Earth. But it is not the hardest substance. Wurtzite boron nitride (synthetic) and lonsdaleite (which comes from meteorites) are both harder.
Answer is:
660 degree celsius
Explanation:
Melting point of Aluminium is approximately 660 degree celsius.
Answer is:
Feeler gauge
Explanation:
Feeler gauges are used:
– To check the gap between the mating parts
– To check and set the spark plug gaps
– To set the clearance between the fixture (setting block) and the cutter/tool for machining the jobs
– To check and measure the bearing clearance, and for many other purposes where a specified clearance must be maintained.
