Similar to an expressway looping a city, fiber rings provide on/off ramps that can be compare to:
A) Line side interfaces B) Tributary interfaces
C) Tributary and Line interfaces D) None of the above
B
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If crankshaft endplay is higher than specified, which of the following should be used to correct the condition?
A. oversized thrust bearings B. undersized thrust bearings C. oversized main bearings D. undersized main bearings
A wood slab with a thickness of 0.05 m is subjected to a heat flux of 40?W/m2. The left and right surface temperatures of the wood slab are kept at constant temperatures of 40°?C and 20°?C, respectively. What is the thermal conductivity of the wood slab?
What will be an ideal response?
If the full temperature range of an on/off heating system is from 30 to 100 degrees and the differential gap is 5 degrees, what is the deadband?
What will be an ideal response?
What factor might make a 120/208 V 3-phase 4-wire system more economical than a 120/240 V single-phase 3-wire system?
A) The 120/240 V system requires larger neutrals. B) The neutral can serve up to 3 single-phase loads. C) Most equipment is designed for 208 V.