What is done to counteract armature reaction?

What will be an ideal response?


To counteract this effect, commutating poles are often inserted between the main field poles.

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PROBLEM 2.33 An axial centric force of magnitude P ? 450 kN is applied to the composite block shown by means of a rigid end plate. Knowing that h ? 10 mm, determine the normal stress in (a) the brass core, (b) the aluminum plates.

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?Why is the water pressure on water cooled torches kept below 35 psi (241 kg/mm2)?

A. ?To limit the amount of water that is wasted. B. ?To slow the flow of water through the gun. C. ?Higher pressures produce higher water flows, and that can cool the welding too much so it would be harder to get a stable arc. D. ?Higher water pressures can burst the hoses.

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Congress charged the Environmental Protection Agency (EPA) to protect which of the following parts of the environment?

a. land c. water systems b. air d. all of the above

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A spherical radius is dimensioned with the abbreviation SR preceding the numerical value.

Answer the following statement true (T) or false (F)

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