What are coil clearing contacts?
What will be an ideal response?
ANSWER: Many latching type relays and contactors contain contacts that are used to prevent continuous power being supplied to the coil after it has been energized. These contacts are generally called coil clearing contacts.
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The ____________________ of the amplifier is controlled by the ratio of resistor R2 to resistor R1.
Fill in the blank(s) with the appropriate word(s).
When did diesels become commonplace in farm machinery?
What will be an ideal response?
One way to at least partially deal with forecasting problems associated with environmental
uncertainty is to
a. develop plans over several time horizons. b. do sales forecasting first, followed by other forecasts. c. develop an absolute forecasting index. d. express forecasts as a range of values. e. All of the above.
About what percentage of all human existence occurred during prehistoric times?
a. 52.5 percent b. 67.5 percent c. 85.5 percent d. 97.5 percent