A. 1.2 to 2.5
B. 4.5 to 6.2
C. 7.5 to 8.5
D. 10.5 to 15.5
Related Mcqs:
- Projection welding & stud welding is categorised as the _______________ welding?
A. Pressure
B. Thermit
C. Resistance
D. Arc - 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 - Thermit welding is categorised as the ______________________ welding ?
A. Forge
B. Fusion
C. Resistance
D. Arc - 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 - In electrical resistance welding, distortion results from the use of improper________________?
A. Clamping methods
B. Electrodes
C. Current
D. Filler material - 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 - Consumable electrodes are used in the ____________________ welding?
A. Gas
B. Arc
C. Thermit
D. Resistance - Oxyacetylene reducing flame is used while carrying out welding on___________________?
A. Alloy steel
B. Grey cast iron
C. Mild steel
D. High carbon steel - Thermit welding uses the following energy source ?
A. Electrical energy
B. Chemical energy
C. Energy of high velocity electrons
D. Heat generated by friction - 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
