List two ways to classify hydroponic systems and give two examples for each

What will be an ideal response?


• Substrate systems (sand, gravel)
• Bare root systems (nutrient film technique, aeroponic)

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In severe cases of overheating, zinc in a brazing alloy may start to burn with a(n) ____ flame.

A. orangish B. whitish C. orangish-whitish D. reddish

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Convert AC power to DC power using _____.

a. diacs b. NPN transistors c. rectifier diodes d. triacs

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Battery ____________________ is sulfuric acid and water.

Fill in the blank(s) with the appropriate word(s).

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The SIDI high pressure fuel pump uses a single-barrel piston plunger that is driven by ________

A) A square-lobed cam B) An electric motor C) A three-lobed cam D) A single flat sided cam

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