Material of construction of the electrode used in the electric resistance welding is___________________?

Related Mcqs:

1. The material used for coating the welding electrode is termed as the___________________?

   A. Flux
   B. Slag
   C. Protective layer
   D. Binder

2. Filler material used in welding should have _________________ as compared to the parent metal to be welded ?

   A. Lower melting temperature
   B. Same melting temperature
   C. Same composition
   D. Both ‘B’ & ‘C’

3. ______________________ is used as a material of construction for the blade of power saw ?

   A. Wrought iron
   B. Stainless steel
   C. Mild steel
   D. High speed steel

4. Which of the following is the most suitable material of construction for the condenser tubes, where the cooling medium is brine (salty water) ?

   A. Aluminium
   B. Copper
   C. Titanium
   D. Stainless steel

5. Laser welding is widely employed in the __________________ industries ?

   A. Electronic
   B. Structural
   C. Process
   D. Heavy

6. In an amorphous material, atoms defy any definite atomic structure and exist in random pattern just like in liquid. Which of the following is an amorphous material ?

   A. Tin
   B. Lead
   C. Zinc
   D. Glass

7. The main type of sludge gas evolved during sewage treatment in Imhoff tank is___________________?

   A. CO2
   B. CH4
   C. CO
   D. H2

8. Entropy change for an irreversible process taking system and surrounding together is___________________?

   A. 0
   B. > 0
   C. < 0
   D. None of these

9. During a reversible isothermal expansion of an ideal gas, the entropy change is___________________?

   A. +ve
   B. 0
   C. -ve
   D. ∞

10. For a constant pressure reversible process, the enthalpy change (ΔH) of the system is___________________?

    A. Cv.dT
    B. Cp.dT
    C. ∫ Cp.dT
    D. ∫ Cv.dT