Which of the circuits listed below is not deployed in the access network
A) SONET OC-12 B) DS1 C) DS3
D) Ethernet E) ISDN PRI F) DWDM
Indicate whether the statement is true or false
F
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These lines are used to identify alternate positions of moving parts, adjacent positions of related parts, or repetitive features.
a. cutting plane lines b. chain lines c. phantom lines d. break lines
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)
A resistor is color-coded red, red, violet, orange, and brown. What are the value and tolerance of this resistor?
A. 227,000 W±1% B. 227 kW±10% C. 2273 W±1% D. 227 W± 31%
A high temperature differential (more than 2 degrees) between return air temperature at the grille and the return air temperature at the unit indicates:
A) Clogged liquid line. B) Dirty evaporator coil. C) Return air leakage. D) Low refrigerant charge.