Blog

Adding an output sensor and a comparison (summing) junction converts an open-loop architecture into a closed-loop architecture.

An open-loop system can correct for a disturbance that is injected between its controller and the plant.

A lawn-sprinkler timer that waters every morning for 20 minutes, regardless of soil moisture, is a closed-loop system.

The three primary objectives of control-system analysis and design are _____.

The main penalties for adding feedback to a control system are increased cost and complexity, such as the additional sensors and comparison hardware.

Which approaches are identified for estimating project costs? Select all that apply.

Basado en los siguientes enunciados, exprese cuál es verdadero (V) o falso (F). a) Si la fuerza neta sobre un cuerpo es cero, su aceleración es cero. b) Un cuerpo que se mueve con velocidad constante necesariamente tiene una fuerza neta distinta de cero. c) La segunda ley de Newton se expresa mediante

Scenario: A retailer has requested 35 possible features for a new ecommerce system. The requests are maintained in a prioritized list that can change as business needs evolve. Question: What is this prioritized list called, and which Scrum role is responsible for prioritizing it?

Which statements correctly describe approaches for developing a Work Breakdown Structure? Select all that apply.

Scenario: A systems analyst is gathering requirements for a new hospital information system. Instead of selecting employees randomly, the analyst deliberately chooses several nurses, physicians, and IT specialists who have extensive experience with the current system and are knowledgeable about its problems. Question: What sampling method is the analyst using, and what two characteristics of this sampling method distinguish it from random sampling?