Question And Answer of Electrical Welding | Electrical Engineering Questions
There are mcq's type question and answer are provided related to electrical welding which is more important for GATE examination and all type of electrical related competitive exams.
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Question And Answer of Electrical Welding | Electrical Engineering Questions |
(A) 743 watts
(B) 744 watts
(C) 746 watts
(D) 748 watts
Ans. (C) 746 watts
Q.1
During resistance welding heat produced
at the joint is proportional to
(a)IR
(b)kVA
(c)current
(d)voltage
Ans.
(a)IR
Q.2
Grey iron is usually welded by______
welding
(a)gas
(b)arc
(c)resistance
(d)MIG
Ans.
(a)gas
Q.3
The metal surfaces, for electrical resis-
tance welding must be____
(a)lubricated
(b)cleaned
(c)moistened
(d)rough
Ans.
(b)cleaned
Q.4
In a welded joint poor fusion is due to
which of the following?
(a)Improper current.
(b)High welding speed
(c)Uncleansed metal surface
(d)Lack of flux
Ans.
(a)Improper current.
Q.5
For arc welding,D.C.is produced by
which of the following?
(a)Motor-generator set
(b)Regulator
(c)Transformer
(d)None of the above
Ans.
(a)Motor-generator set
Q.6
_____welding process uses consumable
electrodes.
(a)TIG
(b)MIG
(c)Laser
(d)All of the above
Ans.
(b)MIG
Q.7
Which of the following equipment is
generally used for arc welding?
(a)Single phase alternator
(b)Two phase alternator
(c)Three phase alternator.
(d)Transformer
Ans.
(d)Transformer
Q.8
Which of the following is not an inert
gas?
(a)Argon
(b)Carbon dioxide
(c)Helium
(d)All of the above
Ans.
(b)Carbon dioxide
Q.9
Electronic components are joined by
which of the following methods?
(a)Brazing
(b)Soldering
(c)Seam welding
(d)Spot welding
(e)None of the above
Ans.
(b)Soldering
Q.10
Resistance welding cannot be used for
(a)dielectrics
(b)ferrous materials
(c)non-ferrous metals
(d)any of the above
Ans.
(a)dielectrics
Q.11
Electric arc welding process produces
temperature up to
(a)1000C
(b)1500C
(c)3500C
(d)5550C
Ans.
(d)5550C
Q.12
Increased heat due to shorter arc is
harmful on account of
(a)under-cutting of base material
(b)burn through
(c)excessive porosity
(d)all of the above
Ans.
(d)all of the above
Q.13
Arc blow results in which of the follow-
ing?
(a)Non-uniform weld beads
(b)Shallow weld puddle giving rise to
weak weld
(c)Splashing out of metal from weld
puddle
(d)All of the above defects
Ans.
(d)All of the above defects
Q.14
In seam welding
(a)the work piece is fixed and disc
electrodes move
(b)the work piece moves but rotating
electrodes are fixed
(c)any of the above
(d)none of the above
Ans.
(c)any of the above
Q.15
In arc welding major personal hazards
are
(a)flying sparks
(b)weld spatter
(c)harmful infrared and ultra-violet
rays from the arc
(d)all of the above
Ans.
(d)all of the above
Q.1
During resistance welding heat produced
at the joint is proportional to
(a)IR
(b)kVA
(c)current
(d)voltage
Ans.
(a)IR
Q.2
Grey iron is usually welded by______
welding
(a)gas
(b)arc
(c)resistance
(d)MIG
Ans.
(a)gas
Q.3
The metal surfaces, for electrical resis-
tance welding must be____
(a)lubricated
(b)cleaned
(c)moistened
(d)rough
Ans.
(b)cleaned
Q.4
In a welded joint poor fusion is due to
which of the following?
(a)Improper current.
(b)High welding speed
(c)Uncleansed metal surface
(d)Lack of flux
Ans.
(a)Improper current.
Q.5
For arc welding,D.C.is produced by
which of the following?
(a)Motor-generator set
(b)Regulator
(c)Transformer
(d)None of the above
Ans.
(a)Motor-generator set
Q.6
_____welding process uses consumable
electrodes.
(a)TIG
(b)MIG
(c)Laser
(d)All of the above
Ans.
(b)MIG
Q.7
Which of the following equipment is
generally used for arc welding?
(a)Single phase alternator
(b)Two phase alternator
(c)Three phase alternator.
(d)Transformer
Ans.
(d)Transformer
Q.8
Which of the following is not an inert
gas?
(a)Argon
(b)Carbon dioxide
(c)Helium
(d)All of the above
Ans.
(b)Carbon dioxide
Q.9
Electronic components are joined by
which of the following methods?
(a)Brazing
(b)Soldering
(c)Seam welding
(d)Spot welding
(e)None of the above
Ans.
(b)Soldering
Q.10
Resistance welding cannot be used for
(a)dielectrics
(b)ferrous materials
(c)non-ferrous metals
(d)any of the above
Ans.
(a)dielectrics
Q.11
Electric arc welding process produces
temperature up to
(a)1000C
(b)1500C
(c)3500C
(d)5550C
Ans.
(d)5550C
Q.12
Increased heat due to shorter arc is
harmful on account of
(a)under-cutting of base material
(b)burn through
(c)excessive porosity
(d)all of the above
Ans.
(d)all of the above
Q.13
Arc blow results in which of the follow-
ing?
(a)Non-uniform weld beads
(b)Shallow weld puddle giving rise to
weak weld
(c)Splashing out of metal from weld
puddle
(d)All of the above defects
Ans.
(d)All of the above defects
Q.14
In seam welding
(a)the work piece is fixed and disc
electrodes move
(b)the work piece moves but rotating
electrodes are fixed
(c)any of the above
(d)none of the above
Ans.
(c)any of the above
Q.15
In arc welding major personal hazards
are
(a)flying sparks
(b)weld spatter
(c)harmful infrared and ultra-violet
rays from the arc
(d)all of the above
Ans.
(d)all of the above
