Resistance Welding Multiple Choice Question and Answer

  

1.       The heat generated in resistance welding is expressed by

(a)  2I²RT
(b)  I²RT
(c)   IRT²
(d)  4I²RT

2.       Which resistance welding machine is used to join pipe sections end to end

(a)    Butt welding Machine
(b)   Seam welding Machine
(c)    Projection welding Machine
(d)   Spot welding Machine

3.       The type of joint used in spot welding is

(a)    Butt welding
(b)   Lap welding
(c)    Corner welding

(d)   Edge welding

4.       In resistance welding

(a)    Heat is produce by arc
(b)   Filler metal is used
(c)    Heat is produced by passing arc

(d)   None of the above

5.       In resistance welding

(a)    No arc is produced
(b)   No Filler metal is used
(c)    Heat is produced by passing arc

(d)   All of the above 

6.       Name the resistance welding process in which two wheels are used

(a)    Butt welding Machine

(b)   Seam welding Machine

(c)    Projection welding Machine

(d)   Spot welding Machine  

7.       Spot welding process basically depends upon

(a)    Ohmic resistance
(b)   Filler metal resistance
(c)    Resistance only

(d)   Current only 

8.       What type of electrodes are used in resistance seam welding

(a)    Flat
(b)   Disc
(c)    Domed

(d)   Pointed 

9.       It is difficult to weld copper by resistance welding because of its

(a)    High ductility

(b)   High toughness

(c)    High thermal conductivity

(d)   High resistance