Describe a thermistor.
What will be an ideal response?
a resistor whose resistance changes with temperature change
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What are timers and counters?
What will be an ideal response?
Outside of their suitability for use in wet locations, flexible cords with the letter W in the type designation are also ____________________.
Fill in the blank(s) with the appropriate word(s).
Saturated water vapor at 25°C (Psat = 3.17 kPa) flows in a pipe that passes through air at 25°C with a relative humidity of 40 percent. The vapor is vented to the atmosphere through a 9-mm internal-diameter tube that extends 10 m into the air. The diffusion coefficient of vapor through air is 2.5 × 10?5 m2/s. The amount of water vapor lost to the atmosphere through this individual tube by diffusion is
(a) 1.7?×?10?6 kg (b) 2.3?×?10?6 kg (c) 3.8?×?10?6 kg (d) 5.0?×?10?6 kg (e) 7.1?×?10?6 kg
No crane or other heavy equipment should be operated within ____ feet of energized electrical transmission lines.
A. 25 B. 20 C. 15 D. 10