DEFECTS IN WELDING (CAUSES) Improper welding parameter and wrong welding procedure introduce the welding defects in welded Joints. A defective welding Joint may fall under service condition and can...
Multiple Choice Questions: 1. First material known to be used by man: (a) Cotton (b) Bronze (c) Iron (d) Rock 2. First metal known to be used by man:(a) Iron (b) Bronze (c) Silver (d) Aluminium 3. Which...
The term “refrigeration” is used to denote maintenance of a system or body at a temperature lower than that of its surroundings. The system maintained at the lower temperature is known as refrigerated...
VCR stands for Vapour Compression Refrigeration System. It is a refrigeration system in which cooling is obtained with the help of refrigerant. It consist of four major components such as Compressor, Condenser,...