Which of the following statements are true regarding rated lamp life? Select all that apply.
A) For fluorescent, it's the time when a group of lamps' output depreciates to 70% of initial value.
B) For incandescent, it's the time elapsed when 50 percent of a group of lamps remain burning.
C) For LED, it's the time elapsed when 70 percent of a group of lamps remain burning.
B) For incandescent, it's the time elapsed when 50 percent of a group of lamps remain burning.
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Tiny animals that drift or swim weakly in the ocean are known by what general name?
What will be an ideal response?
A garden hose with the water valve shut and the nozzle closed sits in the sun, full of liquid water. Initially, the water is at 10°C and 6 bar. After some time the temperature of the water rises to 40°C. Owing to the increase in temperature and pressure and the elasticity of the hose, the internal diameter of the hose increases by 0.35%. Estimate the final pressure of the water in the hose.
Which ratite is native to Australia?
A. ostrich B. emu C. rhea D. kiwi
Technician A assumes a replacement part is good just because it is new. Technician B says that sometimes recent repair work will be the cause of a complaint. Which technician is correct?
A) Technician A only B) Technician B only C) Both technicians A and B D) Neither technician A nor B