36) The temperature range for soldering process

40 to 100 degree celsius

180 to 250 degree celsius

300 to 500 degree celsius

600 to 900 degree celsius

Answer is:

180 to 250 degree celsius

ISRO Technician-B Welder Question Paper - 2016 (Set -1) with Answer Key

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37) Which of the following operations is known as 'sweating'?

Tinning of two surfaces to be joined, applying flux and heating.

Heating of two surfaces to be joined, to high temperature in presence of flu x.

Heating of two su rfaces at low temperatures.

Joining of two surfaces without the use of flux.

Answer is:

Tinning of two surfaces to be joined, applying flux and heating.

38) In arc welding, penetration is minimum for

DC-Electrode Positive

DC-Electrode Negative

none of the above

Answer is:

DC-Electrode Positive

39) One of the function of the electrode coating is:

To increase the welding current

To stabilize the arc

To prevent rusting

To control arc temperature

Answer is:

To stabilize the arc

40) In resistance welding, two electrodes are made of

Alu minium

Copper

Iron

Bronze

Answer is:

Copper

ISRO Technician-B Welder Question Paper - 2016 (Set -1) with Answer Key

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36) The temperature range for soldering process

180 to 250 degree celsius

ISRO Technician-B Welder Question Paper - 2016 (Set -1) with Answer Key

Related ISRO Technician-B Welder Question Paper - 2016 (Set -1) with Answer Key

37) Which of the following operations is known as 'sweating'?

Tinning of two surfaces to be joined, applying flux and heating.

38) In arc welding, penetration is minimum for

DC-Electrode Positive

39) One of the function of the electrode coating is:

To stabilize the arc

40) In resistance welding, two electrodes are made of

Copper

ISRO Technician-B Welder Question Paper - 2016 (Set -1) with Answer Key