Review for Quiz BOSH
Electrical Safety and Basics Quiz
Test your knowledge on essential electrical safety concepts and principles! This quiz covers fundamental topics that are crucial for understanding electrical systems and their safe operation.
- Learn about electrical measurements and current flow.
- Understand the importance of grounding and insulation.
- Explore the effects of electric shock and safety precautions.
Essential and considered as among the basic needs of everybody
Water
Electricity
Air
Rock
In order for electrons to move between two points, a potential difference must exist The potential difference between two points in a circuit is measured in terms of volts.
Voltage
Resistance
Current
The flow of electrons is also governed by the resistance offered by the conducting materials It is measured in Ohms.
Voltage
Resistance
Current
The _____ flow in a circuit is measure in terms of amperes One ampere, by definition, is the flow of 6 28 x 1018 electrons per second past a given point in a circuit
Voltage
Resistance
Current
The greater the ________, the greater the flow of water through the pipe.
Pipe Resistance
Hydraulic Pressure
The greater the resistance, the lesser the flow of water.
Pipe Resistance
Hydraulic Pressure
Is a common hazard encountered by people involved in the installation, maintenance, and operation of electrical equipment Electric
Electric Shock
Burn
Fire
That flows through the human body The amount of current that flows to the body depends on voltage of the circuit and insulating quality
Path the current takes
Duration of current flow.
Amount of current
The _________ takes through the body affects the degree of injury A
Path the current takes
Duration of current flow.
Amount of current
The longer the current flows through the body, the more devastating the result can be.
Path the current takes
Duration of current flow.
Amount of current
The flow of electric charge that does not change direction
Alternating current
Direct current
The flow of electric charge whose magnitude and direction changes periodically This can cause a person to maintain an involuntary grip on the live metal or conductor and prolong the current flow
Alternating current
Direct current
Which is defined as “very rapid uncoordinated contractions of the ventricles of the heart resulting in loss of synchronization between heartbeat and pulse beat"
Ventricular Allimation
Ventricular Exlusionarity
Ventricular Fibrillation
Ventricular Revolution
Based on the research of Charles F Dalziel professor at the University of California, the effects of alternating current 60 Hz) on the human body are generally accepted to be as follows
Charles F Dalziel
Charles D Guzman
Charles E. Little
Charles A. Domingo
Grounding or earthing is any means of absorbing any leakage current and making it flow directly to earth by using an electrical conductor
Use Double Insulating Materials
Use of grounding system
Use Appropriate Disconnecting Means
Proper Maintenance of Portable Power Tools
Insulating materials have extremely high resistance values, virtually to prevent flow of electric current through it.
Use Double Insulating Materials
Use of grounding system
Use Appropriate Disconnecting Means
Proper Maintenance of Portable Power Tools
The necessity to use flexible cables to supply electricity to the tools introduces hazards Such cables are often misused and abused resulting in damaged insulation and broken or exposed conductors
Use Double Insulating Materials
Use of grounding system
Use Appropriate Disconnecting Means
Proper Maintenance of Portable Power Tools
Means grounding the neutral point iron terminal of electrical circuits on power transformer of electrical system.
System Grounding
Equipment Grounding
Grounding of a non charged metal part of electrical equipment.
System Grounding
Equipment Grounding
In the event of abnormal conditions such as faults or when excess current flows, the fuse would blow and protect the circuit or apparatus from further damage.
Circuit Breaker
Earth Leakage Circuit Breaker
Fuse
A _________ has several advantages for excess current circuit protection.
Circuit Breaker
Earth Leakage Circuit Breaker
Fuse
Majority of electric shock injuries occur when the body acts as conductor between line and earth
Circuit Breaker
Earth Leakage Circuit Breaker
Fuse
Is a continuous electrical discharge between two electrodes with a visible discharge of light
Spark
Ark
is a very short duration electric discharge across two electrodes with a visible discharge of light
Spark
Ark
An Earth leakage circuit breaker ( is a safety device used in electrical installations with high earth impedance to prevent shock.
Earth leakage circuit breaker ( is
The_____________ is a fast acting circuit breaker designed to shut off electric power in the event of a ground fault within as little as 1 40 of a second It
Ground fault circuit interrupter,
How much electricity is enough to cause death?
It depends entirely on the amount of current flowing thru the body At 10 milli amperes, the body experiences involuntary grip or the person cannot let go of the conducting material At 20 mA, the body may already experience ventricular fibrillation leading to death
Why do birds standing on high tension wires do not get electrocuted?
In order for an animal or person be electrocuted, the electricity should have electric current path within the body or a closed circuit path for the electricity The bird happens to be standing only on the wire without causing itself to create a circuit path
What can you say about the practice of replacing a busted fuse with any type of conductive material to continue the electrical supply?
The fuse is a protective device to prevent overload Replacing it with other than the rated fuse with another type of conductor will defeat its purpose for protection This practice will create the overload to the circuit that will cause damage to the electrical installation and in worst cases cause fire
What is the purpose of the third conductor of common plugs/third hole in other outlets? How come it is okay to only use the two holes or remove the third wire?
ς� It is actually required for these kinds of electrical systems to have a ground wire or the third wire This wire or conductor is for the ground electrical path The ground electrical path is for the protection of the user or the equipment itself Removing the wire/conductor may cause damage to the equipment or cause electrical shock to the user
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