The primary method of varying the speed on a DC shunt motor is to adjust the voltage and current on the field winding or the _____.

a. rheostat
b. armature
c. controller
d. stator key


b. armature

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When handling older rats, you should be careful and talk so that they will relax

Indicate whether the statement is true or false

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The factoring method can not be used to solve all quadratic equations.

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

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The flat area behind the damper (above the sloped back of the firebox) is called the ____ shelf.

A. ash B. hearth C. smoke D. chimney

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Refer to the figure. Assume 2" PVC. Find e-e of pipe L

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

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