Fluid Mechanics: Water Properties and Pressure

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Questions and Answers

What is the main concept that relates to the pressure of a fluid at equilibrium?

Torricelli's Law

Hydrostatic Pressure (correct)

Velocity Head

Bernoulli's Principle

What is the law that describes the relationship between the pressure and height of a fluid column?

Archimedes' Principle

Torricelli's Law (correct)

Pascal's Law

Bernoulli's Principle

What is the term used to describe the pressure of a fluid in motion due to its velocity?

Dynamic Pressure

Hydrostatic Pressure

Velocity Pressure

Velocity Head (correct)

What is the principle that relates the pressure and velocity of a fluid in motion?

Bernoulli's Principle Signup and view all the answers

What is the term used to describe the calculation of pressure loss due to friction in a fluid flow?

Calculating Pressure Loss Due to Friction Signup and view all the answers

What is the term used to describe the sum of the pressure heads in a fluid flow system?

Total Head Signup and view all the answers

What is the main focus of the Energy Release Theory?

Release of energy and its consequences Signup and view all the answers

Which theory focuses on the study of human factors that contribute to accidents?

Human Factors Theory Signup and view all the answers

What is the purpose of conducting an accident investigation?

To identify the root cause of an accident Signup and view all the answers

What is the term used to describe a sequence of events that leads to an accident?

Multilinear Events Sequencing Method Signup and view all the answers

What is the name of the theory that proposes that accidents occur due to a combination of factors?

Combination Theory Signup and view all the answers

Which of the following is a type of accident causation?

All of the above Signup and view all the answers

What is the purpose of the Fact Finding stage in an accident investigation?

To gather data and information about the accident Signup and view all the answers

Which of the following techniques is used to analyze the sequence of events leading to an accident?

Multilinear Events Sequencing Method Signup and view all the answers

What is the name of the theory that proposes that accidents occur due to the release of energy?

Energy Release Theory Signup and view all the answers

What is the purpose of the Report of Investigation?

To document the findings of the accident investigation Signup and view all the answers

What is the primary purpose of using ventilation?

To reduce the concentration of airborne contaminants Signup and view all the answers

What type of ventilation is used to remove contaminants from a specific area?

Local (Exhaust) Ventilation Signup and view all the answers

What is the formula to calculate the volumetric air flow?

Q = A × V Signup and view all the answers

What is the unit of measurement for static pressure?

Inches of water Signup and view all the answers

What is the purpose of a canopy hood?

To capture contaminants from a specific area Signup and view all the answers

What is the formula to calculate the capture velocity for a plain opening hood?

Vc = Q / A Signup and view all the answers

What is the purpose of a duct in ventilation?

To transport air from the fan to the hood Signup and view all the answers

What is the formula to calculate the static pressure of the fan (SPh)?

SPh = P × V Signup and view all the answers

What is the purpose of a pitot tube?

To measure the air flow velocity Signup and view all the answers

What is the formula to calculate the room air changes?

AC = Q / V Signup and view all the answers

Study Notes

Hydrostatics and Hydraulics

Hydrostatic pressure is a key concept in fluid mechanics
Torricelli's Law states that the pressure of a fluid at equilibrium is proportional to the height of the fluid column
Head pressure is the pressure of a fluid due to its height or elevation
Velocity head is the pressure of a fluid due to its motion or velocity
Velocity pressure at constant laminar velocity can be calculated using the formula: ΔP = ρ * g * h
Flow rates and pressure drops are important concepts in hydraulic systems
Bernoulli's Principle states that the pressure of a fluid decreases as its velocity increases
Key information to remember on hydrostatics and hydraulics includes understanding pressure, flow rates, and velocity

Ventilation

Ventilation is used to remove contaminants from the air and provide a healthy working environment
Types of ventilation include general ventilation, dilution ventilation, and local (exhaust) ventilation
General concepts of ventilation include calculating volumetric air flow, static pressure, velocity pressure, and total pressure
Principles of air movement include contaminant generation, purge rates, and steady-state concentration
Local exhaust ventilation includes canopy hoods, down draft hoods, enclosure hoods, and receiving hoods
Ventilation measurement equipment includes pitot tubes, rotating vane anemometers, and thermal anemometers
Key information to remember on ventilation includes understanding types, concepts, and measurement equipment

Accident Causation and Investigation Techniques

Domino Theory suggests that a series of events can lead to an accident
Heinrich's Axioms of Industrial Safety state that accidents are preventable and that safety is a line responsibility
Human Factors Theory suggests that human error is a major contributor to accidents
Accident and Incident Theory includes the epidemiological theory, systems theory, energy release theory, and behavior theory
The Modern Causation Model includes operating errors, systems defects, command errors, safety program defects, and safety management errors
Seven Avenues include safety management error countermeasures, safety program defect countermeasures, and command error defect countermeasures
Accident investigation procedures include purpose, investigation procedures, fact-finding, and interviews
Problem-solving techniques include the scientific method, gross hazard analysis, job safety analysis, and failure modes and effects analysis
Key information to remember on accident causation and investigation techniques includes understanding theories, models, and procedures.

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Description

This quiz covers the properties of water and pressure related concepts, including hydrostatic pressure, Torricelli's Law, and head pressure. Test your knowledge of fluid mechanics!