# Multispot welding process is

1.  seam welding

2.  projection welding

3.  thermit welding

4.  percussion welding

4

projection welding

Explanation :
No Explanation available for this question

# A continuous spot welding process is

1.  seam welding

2.  projection welding

3.  thermit welding

4.  percussion welding

4

seam welding

Explanation :
No Explanation available for this question

# If two pieces of different metals are to be by projection welding , then the projection be made on the metal piece having

1.  higher conductivity

2.  lower conductivity

3.  same conductivity

4.  none of the above

4

higher conductivity

Explanation :
No Explanation available for this question

# Welding process used for joining bars is

1.  spot welding

2.  projection welding

3.  seam welding

4.  none of these

4

seam welding

Explanation :
No Explanation available for this question

# Seam welding used for metal sheets have thickness in the range

1.  0.025 to 3 mm

2.  3 to 6 mm

3.  6 to 10 mm

4.  more than 10 mm

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0.025 to 3 mm

Explanation :
No Explanation available for this question

# In projection welding, diameter of the projection as compared to thickness of the sheet approximately

1.   half

2.  equal

3.  1.5 times

4.  double

4

equal

Explanation :
No Explanation available for this question

# Welding of steel structures on site of a building is done by

1.  spot welding

2.  projection welding

3.  seam welding

4.  are welding

4

seam welding

Explanation :
No Explanation available for this question

# Welding of steel structures on site of a building is done by

1.  spot welding

2.  projection welding

3.  seam welding

4.  are welding

4

seam welding

Explanation :
No Explanation available for this question

# In arc welding, the temperature of heat of are is in the range

1.  10000C to20000C

2.  2000 0C to 40000 C

3.  40000 C to 60000 C

4.  6000 0C to 70000 C

4

40000 C to 60000 C

Explanation :
No Explanation available for this question

# In arc welding, current used is

1.  A.C. current of high frequency

2.  A.C current of low frequency

3.  D.C. current

4.  all of these

4