Before practicing stringer and weave beads using welding coupons made of 1/4" to 3/4" thick mild steel, use
a wire brush or grinder to _____.
a. shape the edges
b. create numerous grooves
c. roughen the surface
d. remove heavy mill scale or corrosion
d
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Assume an isolation transformer has a primary voltage of 120 V and a secondary voltage of 500 V. The turns ratio is 1:____.
a. 0.231 b. 1 c. 2.36 d. 4.17
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In a 2-ton capillary tube system, the unit does not develop full capacity. Head pressure is low and suction pressure is low. What is the problem?
What will be an ideal response?
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What does fast moving smoke indicate?
a. incomplete combustion b. very hot fire c. hot synthetic fuel content d. poorly ventilated fire
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Graph g [n] for the signals in Figure E.17.
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