Answer the following statement(s) true (T) or false (F)
1. A product consists of structures and a set of functional connections.
2. A function tree is the hierarchical structure showing the functions and their sub-functions.
3. A function structure shows the flow of material, energy and signal.
4. If technical elements are arranged in a novel combination forming a system that satisfies a societal need, that combination is a conceptual design.
1. True
2. True
3. True
4. True
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A technician should use a charging scale to weigh charged refrigerant _____.
a. only when a system holds less than one pound b. on every occasion, regardless of the method used c. only if the customer requests it d. when zeotropic refrigerants are being charge
Un relé de sobrecarga de estado sólido programable se puede programar para seleccionar la clase de disparo específica según el motor que se use y su aplicación. La clase de disparo que se usa en la mayoría de los motores de uso general clasificados por la NEMA es:
a. Clase 01. b. Clase 10. c. Clase 20. d. Clase 30.
What is the difference between drywall and wetwall?
What will be an ideal response?
DC drives give the DC motor which of the following characteristics?
A. controlled acceleration and deceleration B. high starting horsepower C. high running horsepower D. good speed regulation E. all of the above