MENSURATION - Practice Mode
1) What is the area of a right angled triangle having a base 10 cm and height 5 cm?
Explanation:
Vertical Position (3F Or 3G)
In vertical position welding, the axis of the weld is approximately vertical.
When welding is done on a vertical surface, the molten metal has a tendency to run downward and pile up.
The flow of metal can be controlled by pointing the flame upward at a 45 degree angle to the plate, and holding the rod between the flame and the molten puddle (see above).
The manipulation of the torch and the filler rod keeps the metal from sagging or falling and ensures good penetration and fusion at the joint.
Both the torch and the welding rod should be oscillated to deposit a uniform bead. The welding rod should be held slightly above the centerline of the joint, and the welding flame should sweep the molten metal across the joint to distribute it evenly.
2) What is the primeter of scalene. Triangle having sides of 40mm, 20mm and 28mm?
3) What is the area of an equilateral triangle of side 450 mm?
4) What is the area of a circle of diameter 50 cm?
Explanation:
Helmet should be worn during overhead welding.