The electromechanical control counter is similar to the electromechanical reset timer, except that the synchronous motor of the timer is replaced by a stepping motor. The stepping motor advances one step each time it is ____________________.
Fill in the blank(s) with the appropriate word(s).
deenergized
You might also like to view...
Black smoke from the exhaust is caused by:
A. Oil entering the combustion chamber B. A rich air/fuel ratio C. A lean air/fuel ratio D. Coolant entering the combustion chamber
In reining patterns, the average score is:
a. 10 c. 70 b. 50 d. 100
Officials from the City of Galveston and State of Texas gathered to celebrate the start of a beach restoration project that involves dumping sand and adding antierosion structures. The first cost of the project is $30 million with annual maintenance estimated at $340,000. If the restored/expanded beaches attract visitors who will spend $6.2 million per year, what is the conventional B/C ratio at the social discount rate of 8% per year? Assume the State wants to recover the investment in 20 years.
What will be an ideal response?
A sphere of ice, 5 cm in diameter, is exposed to 65 km/h wind with 15 percent relative humidity. Both the ice sphere and air are at ? 1°C and 90 kPa. Predict the rate of evaporation of the ice in g/h by use of the following correlation for single spheres: Sh = [4.0 + 1.21 (ReSc)2/3]0.5. Data at ? 1°C and 90 kPa: , kinematic viscosity (air) = 1.32 × 10?7 m2/s, vapor pressure (H2O) = 0.56 kPa and density (ice) = 915 kg/m3.
What will be an ideal response?