1) Which current is used in Tungsten Inert-Gas (TIG) welding?
a. Only A.C. can be used as welding current
b. Only D.C. can be used as welding current
c. Both A.C. and D.C. can be used as welding current
d. None of the above
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Answer
Explanation
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ANSWER: Both A.C. and D.C. can be used as welding current
Explanation:
No explanation is available for this question!
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2) The process of joining two pieces of metal with a different fusible metal applied in a molten state is called as
a. welding
b. soldering
c. both a. and b.
d. none of the above
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Answer
Explanation
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ANSWER: soldering
Explanation:
No explanation is available for this question!
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3) Which of the following statements is/are true for welding process?
a. General welding equipments are very costly
b. Welding results in residual stresses and distortion of workpiece
c. Two dissimilar metals cannot be joined by welding
d. All of the above
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Answer
Explanation
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ANSWER: Welding results in residual stresses and distortion of workpiece
Explanation:
No explanation is available for this question!
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4) The metal joined is never brought to a molten stage in
a. pressure welding
b. fusion welding
c. thermit welding
d. none of the above
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Answer
Explanation
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ANSWER: pressure welding
Explanation:
No explanation is available for this question!
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5) Which of the following is an example of fusion welding?
a. Atomic hydrogen welding
b. Flash welding
c. Seam welding
d. Spot welding
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Answer
Explanation
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ANSWER: Atomic hydrogen welding
Explanation:
No explanation is available for this question!
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6) In resistance electric welding, the current passed through two joining metal pieces is
a. 230 to 440 volts, at a high amperage
b. 230 to 440 volts, at a low amperage
c. 2 to 8 volts, at a high amperage
d. 2 to 8 volts, at a low amperage
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Answer
Explanation
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ANSWER: 2 to 8 volts, at a high amperage
Explanation:
No explanation is available for this question!
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7) As compared to the arc welding, the gas welding takes
a. considerably less time for the metal to heat up
b. considerably more time for the metal to heat up
c. approximately same time for the metal to heat up as arc welding
d. unpredictable
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Answer
Explanation
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ANSWER: considerably more time for the metal to heat up
Explanation:
No explanation is available for this question!
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8) Power consumption in D.C. arc welding is
a. less than the power consumption in A.C. arc welding
b. more than the power consumption in A.C. arc welding
c. similar to the power consumption in A.C. arc welding
d. very difficult to calculate
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Answer
Explanation
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ANSWER: more than the power consumption in A.C. arc welding
Explanation:
No explanation is available for this question!
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9) Which type of arc welding is suitable for joining non-ferrous metals?
a. D.C. Arc welding
b. A.C. Arc welding
c. Both D.C. As well as A.C. Arc welding
d. None of the above
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Answer
Explanation
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ANSWER: D.C. Arc welding
Explanation:
No explanation is available for this question!
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10) The welding process by Metal Inert-Gas (MIG) welding is
a. slower than the welding process by Tungsten Inert-Gas (TIG) welding
b. faster than the welding process by Tungsten Inert-Gas (TIG) welding
c. at same speed as the welding process by Tungsten Inert-Gas (TIG) welding
d. at unpredictable speed
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Answer
Explanation
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ANSWER: faster than the welding process by Tungsten Inert-Gas (TIG) welding
Explanation:
No explanation is available for this question!
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