What are the steps involved in physically testing a fan clutch?

What will be an ideal response?


1. First, with the engine off, turn the fan by hand. There should be a slight resistance, but the fan should turn without roughness, which would indicate a bad bearing.
2. Rock the fan up and down to see if it is too loose.
3. If there is a buildup of greasy dirt in the bearing areas of the clutch, the silicone fluid has probably leaked out. If the bearing in the clutch fails, replace the clutch; otherwise, the resulting imbalance will ruin the water pump.

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the figure below, the cost-effective way to abate 4 units would be



A) For Firm 1 to abate 2 unit and Firm 2 to abate 2 units.
B) For Firm 1 to abate 1 unit and Firm 2 to abate 3 units.
C) For Firm 1 to abate 4 unit and Firm 2 to abate 0 units.
D) For Firm 1 to abate 3 unit and Firm 2 to abate 1 unit.

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If the primary coil is energized in a transformer, what happens in the secondary coil if it is connected into a closed circuit?

A. nothing until it too is powered up B. current flow is induced C. nothing until the secondary circuit is open D. nothing until primary coil de-energizes

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Steel nails coated with ____ are called galvanized nails.

a.copper c.aluminum b.zinc d.nickel

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? Identify and state the historical significance of Frances Perkins.

What will be an ideal response?

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