What is a backfire and how is it caused?
What will be an ideal response?
Backfire is a loud snap or popping noise that generally blows out the flame of a torch. It may be
caused by touching the tip against the work, overheating, incorrect torch adjustment, a loose tip, a dirty
tip, or damaged valves.
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Almost all small engines are cooled by ____________________
Fill in the blank(s) with correct word
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What is an assembly print?
What will be an ideal response?
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The negative feedback path in a Wein-bridge oscillator
A) controls the bandwidth B) controls fC C) controls fr D) controls gain
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If three 75 W lamps are connected in parallel across a 125 V source, IT equals ________
A) 180 mA B) 1.8 A C) 18 A D) 18 mA
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