8. Submerged arc process is characterised by
A. deep penetration
B. high welding current
C.exceptionally smooth beads
D. all of the above

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9. Unlike TIC welding, MIG welding
A. requires no flux
B. uses consumable electrodes
C. provides complet protection from atmospheric contamination
D. requires no post-weld cleansing

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10. MIG welding process is becoming increasingly popular in welding industry mainly because of
A. its easy operation
B. its high metal deposit rate
C. its use in both ferrous and non-ferrous metals
D. both and

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11. Spot welding process basically depends on
A. ohmic resistance
B. generation of heat
C. application of forgin pressure
D. both and

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12. In the process of electroslag welding theoretically there is no upper limit to the
A. thickness of weld bead
B. rate of metal deposit
C. slag bath temperature
D. rate of slag consumption

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13. The characteristics of drive for crane hoisting is
A. smooth movement
B. precise control
C. fast speed control
D. all of the

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14. Motors preferred for rolling mill drive is
A. d.c. motors
B. a.c. slip ring motors with speed control
C. both and above
D. none of the above

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