22 Questions
What is the primary function of a fuse in electrical apparatus?
To protect the circuit from overcurrent
What is the most critical factor in determining the severity of electric shock?
Intensity of current
What is the first step in treating a person who has received an electric shock?
Switching off the AC power source
What is the primary precaution to take when handling electrical equipment?
Not touching electrical equipment
What is the effect of a minor electric shock on the victim?
Fright and possible hysteria
Why is alternating current more severe than direct current in causing electric shock?
Because AC has a greater emf than DC
What is the purpose of testing apparatus before use?
To ensure the apparatus is safe to use
What should be done before investigating a fault in an electrical apparatus?
Disconnecting the apparatus from the power source
What is a common precaution to prevent earth shock in a physiotherapy department?
Ensuring water and gas pipes are out of reach
What is a risk when a person receiving treatment rests their hand on a water pipe?
They might receive an electric shock
What must the voltage be to feel a static shock?
3500 Volts
What is a purpose of ESD flooring?
To prevent and remove static electric charges
What material is NOT generally used in creating ESD flooring?
Wood
Why should a rubber mat be used under a patient's feet during treatment?
To prevent electric shock by providing insulation
What is the primary purpose of a fuse in an electrical circuit?
To stop the flow of current when it exceeds a safe level
What are the immediate steps to take when a fuse blows?
Switch off the main supply and replace the burned fuse wire with a new one of correct thickness
Why should a person avoid forming a part of the earth connection in an electrical circuit?
It can result in an earth shock
What causes a fuse to blow in an electrical circuit?
The apparatus has a high wattage
In a three-wire connection, what can result in an earth shock?
Contact between person and a live wire while connected to earth
What factor is NOT a common cause of fuse blowing?
High resistance in the apparatus
What is the result of a thicker fuse wire in the circuit?
It allows a larger intensity current than intended
How can a person unintentionally create an earth connection?
By touching a conductor connected to earth such as water pipes or radiators
This quiz covers the basics of electric shock, its applications in physiotherapy, and safety precautions to take when dealing with patients. It also explains the differences between live, neutral, and earth connections, as well as the use of fuses.
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