Tag: devices used to protect from shock of electric current

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Questions Related to devices used to protect from shock of electric current

Multiple choice physics when current flows precaution with the electrical circuit precautions to be taken while dealing with current electrical safety devices used to protect from shock of electric current

Mark the appropriate answer(options includes safety precautions to be used while using electricity)

  1. If water or a chemical is spilled onto equipment, shut off power at the main switch or circuit breaker and unplug the equipment.

  2. Equipment producing a tingle should be disconnected and reported promptly for repair.

  3. Do not rely on grounding to mask a defective circuit nor attempt to correct a fault by insertion of another fuse or breaker, particularly one of larger capacity

  4. All of these
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Safety precautions to be used while using electricity:

  1. If water or a chemical is spilled onto equipment, shut off power at the main switch or circuit breaker and unplug the equipment. Very logical. NEVER try to remove water or similar from equipment while energized. After all, it’s stupid to do so.
  2. Equipment producing a “tingle” should be disconnected and reported promptly for repair. 
  3. Do not rely on grounding to mask a defective circuit nor attempt to correct a fault by insertion of another fuse or breaker, particularly one of larger capacity.

Multiple choice physics when current flows precaution with the electrical circuit precautions to be taken while dealing with current electrical safety devices used to protect from shock of electric current

Options contains safety precaution to be used while using electricity. Mark the appropriate one.

  1. Never use metallic pencils or rulers, or wear rings or metal watchbands when working with electrical equipment

  2. When it is necessary to handle equipment that is plugged in, be sure hands are dry and, when possible, wear nonconductive gloves, protective clothes and shoes with insulated soles.

  3. Minimize the use of electrical equipment in cold rooms or other areas where condensation is likely.

  4. All of these
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Safety precaution to be used while using electricity:

  1. Never use metallic pencils or rulers, or wear rings or metal watchbands when working with electrical equipment. This rule is very easy to forget, especially when you are showing some electrical part pointing with metallic pencil. Always be aware. 
  2. When it is necessary to handle equipment that is plugged in, be sure hands are dry and, when possible, wear non-conductive gloves, protective clothes and shoes with insulated soles. Remember: gloves, clothes and shoes. 
  3. Minimize the use of electrical equipment in cold rooms or other areas where condensation is likely. If equipment must be used in such areas, mount the equipment on a wall or vertical panel.

Multiple choice physics when current flows precaution with the electrical circuit precautions to be taken while dealing with current electrical safety devices used to protect from shock of electric current

Which of the following are safety precaution to be taken while using electricity. Mark correct answer

  1. Know the wire code of your country.

  2. Always check all your GFCIs once a month

  3. Always use a circuit breaker or fuse with the appropriate current rating

  4. All of these
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Some precaution to be taken while using electricity:

  1. Know the wire code of your country.
  2. Always check all your GFCI’s once a month. A GFCI (Ground Fault Circuit Interrupter) is a RCD (Residual Current Device). They have become very common in modern homes, especially damp areas like the bathroom and kitchen, as they help avoid electrical shock hazards. It is designed to disconnect quickly enough to avoid any injury caused by over current or short circuit faults.
  3. Always use a circuit breaker or fuse with the appropriate current rating.

Multiple choice physics when current flows precaution with the electrical circuit precautions to be taken while dealing with current electrical safety devices used to protect from shock of electric current

Below are some safety precautions to be taken while using electricity. Select most appropriate option.

  1. Working outside with underground cabling can be dangerous

  2. Always put a cap on the hot/live wire while working on an electric board or service panel

  3. Take care while removing a capacitor from a circuit

  4. All of these
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Some safety precautions to be taken while using electricity:

  1. Try putting a cap on the live wire while working on circuit panels. The cap acts as an insulation and help in preventing any electric shock.
  2. We should be always careful when removing a capacitor from a circuit.
  3. Working outside with underground cabling can be dangerous. So we should be careful when working with underground cable.

Multiple choice physics when current flows precaution with the electrical circuit precautions to be taken while dealing with current electrical safety devices used to protect from shock of electric current

Which of the following is to be used as safety precaution while using electricity.

  1. Drain capacitors before working near them and keep the short circuit on the terminals during the work to prevent electrical shock.

  2. Never touch another persons equipment or electrical control devices unless instructed to do so.

  3. Enclose all electric contacts and conductors so that no one can accidentally come into contact with them.

  4. All of these
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Safety precaution while using electricity:

  1. Drain capacitors before working near them and keep the short circuit on the terminals during the work to prevent electrical shock. 
  2. Never touch another person’s equipment or electrical control devices unless instructed to do so. Don’t be too smart. Don’t try your luck. 
  3. Enclose all electric contacts and conductors so that no one can accidentally come into contact with them. If applicable do it always, if not be very careful.

Multiple choice physics when current flows precaution with the electrical circuit precautions to be taken while dealing with current electrical safety devices used to protect from shock of electric current

Which of the following are safety precaution to be taken while using electricity. Select correct answer.

  1. Always use appropriate insulated rubber gloves and goggles while working on any branch circuit or any other electrical circuit.

  2. Never try repairing energized equipment

  3. Never use an aluminium or steel ladder if you are working on any receptacle at height in your home

  4. All of these
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The safety precaution to be taken while using electricity:

  1. Always use appropriate insulated rubber gloves and goggles while working on any branch circuit or any other electrical circuit.
  2. Never try repairing energized equipment. Always check that it is de-energized first by using a tester. When an electric tester touches a live or hot wire, the bulb inside the tester lights up showing that an electrical current is flowing through the respective wire. Check all the wires, the outer metallic covering of the service panel and any other hanging wires with an electrical tester before proceeding with your work.
  3. Never use an aluminium or steel ladder if you are working on any receptacle at height in your home. An electrical surge will ground you and the whole electric current will pass through your body. Use a bamboo, wooden or a fiberglass ladder instead.

Multiple choice physics when current flows precaution with the electrical circuit precautions to be taken while dealing with current electrical safety devices used to protect from shock of electric current

Fire can be caused by

  1. Breakage of cables

  2. Overheating of line wires

  3. Poor insulation of wires

  4. All
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

There are two major dangers while using electricity. They are 
A) A fire 
B) An electric shock. 
A fire is caused due to overheating of line wired (or cable) for various reasons such as break if insulation or short circuiting,etc to avoid it ,one must use wires (or cables) of current carrying capacity higher than the total current which can flow through the circuit  When using all the appliances at the same time.

Multiple choice physics when current flows precaution with the electrical circuit precautions to be taken while dealing with current electrical safety devices used to protect from shock of electric current

What are the possible risk when an electrical appliance is used in wet places?

  1. The fuse blows

  2. The user gets an electric shock

  3. Fire occurs

  4. Appliance gets over heated
Reveal answer Fill a bubble to check yourself
B,C Correct answer
Explanation

User will get shock as water is good conductor of electricity .When water gets into the appliance, it may get into contact with live wire and conduct the charge out of live wire to user.

It can cause fire ,as water is good conductor of current.It can cause short circuit and very high current can cause heating or fire.

Multiple choice physics when current flows precaution with the electrical circuit precautions to be taken while dealing with current electrical safety devices used to protect from shock of electric current

To avoid electric shock:

  1. The insulation of wires must be of good quality

  2. Insulation should be checked from time to time

  3. The appliances must have its metallic case earthed

  4. All
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

To avoid electric shock 

$\rightarrow$ The insulation of wires must be of good quality 
$\rightarrow$ Insulation should be checked from time to time 
$\rightarrow$ The appliances must have its metallic case earthed 

Multiple choice physics effects of electric current precaution with the electrical circuit precautions to be taken while dealing with current devices used to protect from shock of electric current

Wires used in homes are usually covered with materials like plastic or rubber. This is done to

  1. Prevent rusting

  2. Make handling easier

  3. Prevent shocks & short circuits

  4. Make them look beautiful
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Insulators are used in electrical equipment to support and separate electrical conductors without allowing current through themselves.

therefore it prevent us from shocks and short circuits.