Which metal can be a fire hazard when being machined?
A) Titanium B) Beryllium C) Magnesium D) Babbit
C
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The building activity, like most human activities, has a negative impact on the environment. A metric that measures the impact of a building product on the environment is called environmental product declaration (EPD). This metric is provided by the manufacturer of the product and is prepared in one of the following two ways:
(i) By the manufacturer without an independent third-party validation, called ISO Type II EPD, also called self-declared EPD . (ii) By an independent third party specializing in EPD preparation, called ISO Type III EPD . Which of the two EPDs is given greater weighting in LEED v4 rating system? Note: ISO is an acronym for International Standards Organization.
Common injuries suffered by workers during assembly/disassembly operations are _____.
a. electrocutions b. heat stroke and exhaustion c. pinching and crushing d. exposure to hazardous substances
How do you test the drainage of a potential site for a vegetable garden?
What will be an ideal response?
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.