Production Technology Objective Questions and Answers

141. The gas torch is usually lighted by a friction lighter because

142. Metals like copper and brass can be welded by

143. Positive pressure type torch works on

144. In forehand gas welding operation, the angle between the torch and work is kept around

145. For welding overhead joints in horizontal plane, following technique of gas welding is used

146. The surface cracks in the weldment of non-magnetic alloys can be inspected by

147. The surface and sub-surface cracks in non-magnetic alloys can be inspected by

Mechanical Engineering Objective Questions { Production Technology }