Answer the following statement(s) true (T) or false (F)
1. Contacts must be selected according to the proper load.
2. Limit switches may be momentary contact or maintained contact types.
3. Capacitive proximity sensors are designed to detect only metallic targets.
4. Inductive proximity switches operate on the eddy current principle.
5. Some reflector units have a range of 2 feet or more.
1. TRUE
2. TRUE
3. FALSE
4. TRUE
5. FALSE
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Crops with more than one genetically engineered trait are said to have _________
Fill in the blank(s) with correct word
____ law states that an induced voltage or current opposes the motion that causes it.
a. Edison’s b. Brush’s c. Fleming’s d. Lenz’s
The fluid circulated through the water coil of a geothermal heat pump system:
A) Is typically connected to the local water utility system. B) Comes from condensation water collected off the evaporator. C) Is circulated through a heat transfer loop buried in the ground. D) Is circulated through a cooling tower.
Which is an advantage of power inverters?
A. operate on diesel or gasoline B. fuel efficiency C. provide large amounts of electrical power D. good mobility