What will happen to the Rockwell steel ball penetrator, if it it used for testing hard steels?
A) It will become embedded in the specimen B) It will flatten and become inaccurate
C) It will roll and cause the specimen to fly out D) None of the above
B
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Answer the following statement(s) true (T) or false (F)
1. The brush polarity in a separately excited generator cannot be changed by reversing the rotation of the armature or the direction of the field current. 2. If both the armature direction and the direction of the field current change, the brush polarity remains the same. 3. The magnitude of the voltage depends on the rate at which the flux is cut. 4. Field control of the output voltage is accomplished by varying the total resistance of the field circuit with a field rheostat. 5. Brush polarity changes when the field current is zero.
What difference does it make if you use the absolute or relative scale in the weighting function? Which one would you recommend and why?
What will be an ideal response?
The approximate percentage of shrinkage for steel is 3/16 of an inch per foot.
Answer the following statement true (T) or false (F)
Identify what connects or binds the courses of each of the following wall materials:
Timbers: Precast concrete wall units: Stone: