Related Mcqs:

1. Projection welding & stud welding is categorised as the _______________ welding?

   A. Pressure
   B. Thermit
   C. Resistance
   D. Arc

2. Which of the following mainly decides the current to be employed is arc welding ?

   A. Electrode size
   B. Plate thickness
   C. Voltage across the arc
   D. Welded portion length

3. Thermit welding is categorised as the ______________________ welding ?

   A. Forge
   B. Fusion
   C. Resistance
   D. Arc

4. Saturated steam at a pressure of 25 kg/cm2 is throttled to attain 5 kg/cm2. Then the outcoming steam will be_________________?

   A. Wet
   B. Saturated
   C. Superheated
   D. None of these

5. In electrical resistance welding, distortion results from the use of improper________________?

   A. Clamping methods
   B. Electrodes
   C. Current
   D. Filler material

6. In TIG welding, thoriated tungsten electrodes are used, because it ____________________?

   A. Has higher current carrying capacity
   B. Has better electron emissivity
   C. Is stronger than ordinary tungsten
   D. Is easy to prepare

7. Consumable electrodes are used in the ____________________ welding?

   A. Gas
   B. Arc
   C. Thermit
   D. Resistance

8. Oxyacetylene reducing flame is used while carrying out welding on___________________?

   A. Alloy steel
   B. Grey cast iron
   C. Mild steel
   D. High carbon steel

9. Thermit welding uses the following energy source ?

   A. Electrical energy
   B. Chemical energy
   C. Energy of high velocity electrons
   D. Heat generated by friction

10. Elimination of brittleness resulting from welding of saw blades is done by __________________ of the welded portion ?

    A. Annealing
    B. Toughening
    C. Work hardening
    D. Tempering