In determining the fire-resistance rating of an assembly through ASTM E119 test, which of the following properties of the assembly are investigated?
A) Occurrence of cracks in assembly during the fire
B) Change of color of assembly during the fire
C) Structural integrity during the fire
D) (a) and (b)
E) (a) and (c)
E) (a) and (c)
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Expanded perlite is commonly called _____.
a. wool b. rock c. chalk d. perlite
To properly install heat-shrink insulators, _____.
a. slip the insulator over the connector and apply heat for a few seconds b. apply heat for a few seconds and then install the insulator c. tape the insulator in place before applying heat d. use PVC cement on the insulator before applying any heat
The male budgerigars have ____________________ ceres, and the females have pink or brown ceres
Fill in the blank(s) with correct word
The voltage that is set for the desired speed of the motor is called the ____.
A. feedback signal B. error signal C. reference signal D. sawtooth signal