Answer the following statement(s) true (T) or false (F)
1. The external wiring diagram is used to locate problems and failures in the operation of the controller.
2. One of the most advantageous characteristics of the motor-generator set drive is its inherent capability to regenerate.
3. Electrically controlled, variable speed motor drives offer a wide choice of speed ranges, torque, and horsepower characteristics.
4. For some machinery with precise requirements, AC motors provide characteristics that are not available on DC motors.
5. Static DC drives utilize moving parts in the power conversion equipment that converts (rectifies) and controls the AC power.
1. FALSE
2. TRUE
3. TRUE
4. FALSE
5. FALSE
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A bond with two stretchers and a head alternating on the same course is known as a _____ stretcher garden wall bond.
A. combination B. stagger C. double D. mixed
____________________ is a clear, slightly yellowish fluid that lubricates the joint in the same manner as oil lubricates a mechanical bearing.
Fill in the blank(s) with the appropriate word(s).
In the postwar European welfare states, which new view of citizenship emerged?
a. one based on human and individual rights b. one based on individual loyalty to the state c. one based on regional rather than national affiliations d. one based on mutual and reciprocal state-citizen obligations
In an electromagnetic flow detector, a voltage is induced into the flowing substance.
Answer the following statement true (T) or false (F)