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MCQ
62. Which of the following characteristic does not define a coated electrode?
Maintenance of arc
Protection frum oxygen
Protection from nitrogen
Preventing other elements into molten metal
64. If the rivets in adjacent rows are staggered and the outermost row has only one rivet, the arrangement of the rivets is called-
chain riveting
zig zag riveting
diamond riveting
criss-cross riveting
66. A riveted joint in which the number otrivets decrease from innermost to outer most row is called-
chain riveted joint
diamond rivered joint
criss-cross riveted joint
zig-zag riveted joint
70. A riveted joint in which every rivet of a row is opposite to other rivet of the outer row, is known as-
chain riveted joint
diamond riveted joint
criss-cross riveted joint
zig-zag riveted joint
73. A neutral flame is obtained by supplying-
equal volumes of oxygen and acetylene
more volume of oxygen and less volume of acetylene
more volume of acetylene and less volume of oxygen
none of the above