A. Alloy steel
B. Grey cast iron
C. Mild steel
D. High carbon steel
Related Mcqs:
- Oxyacetylene reducing flame is used while carrying out welding on___________________?
A. Alloy steel
B. Grey cast iron
C. Mild steel
D. High carbon steel - Projection welding & stud welding is categorised as the _______________ welding?
A. Pressure
B. Thermit
C. Resistance
D. Arc - Thermit welding is categorised as the ______________________ welding ?
A. Forge
B. Fusion
C. Resistance
D. Arc - While the oxy-acetylene flame produces a temperature of 3200°C, the temperature produced by oxy-hydrogen flame is about _____________ °C ?
A. 1800
B. 2000
C. 2400
D. 3000 - Pipelines carrying various utilities in chemical industries are identified by their colour codes. The color of pipeline carrying steam is__________________?
A. Black
B. Silver grey
C. Green
D. Yellow - Oxygen cylinders used for autogenous (cutting/welding) purposes are ___________________?
A. Seamless & made of steel
B. Heat treated before use
C. Made by sand casting
D. Welded steel cylinders - 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 - Thermit welding uses the following energy source ?
A. Electrical energy
B. Chemical energy
C. Energy of high velocity electrons
D. Heat generated by friction - 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 - Preheating before welding is done to____________________?
A. Make the plate softer
B. Burn oil & grease sticking to plate surfaces
C. Avoid plate distortion
D. Prevent cold cracks
