Proper Use of Extension Cords and Lock-out/Tag-out System Quiz

What is the formula for Power in relation to Voltage and Current?

Power = Current - Voltage
Power = Current / Voltage
Power = Voltage / Current
Power = Voltage x Current (correct)

What is the characteristic of Alternating Current (AC)?

It flows in one direction only
It is a type of high voltage
It reverses its direction of flow periodically (correct)
It is a type of low voltage

What is the purpose of an Insulator in an Electric Circuit?

To conduct electricity efficiently
To reduce the resistance in a circuit
To increase the voltage in a circuit
To prevent current from taking unwanted paths (correct)

What is the range of resistance of the human body with dry skin?

100,000 to 800,000 ohms (A) Signup and view all the answers

What type of voltage is 660 volts or more?

High Voltage (C) Signup and view all the answers

What is the name of the electric current that flows in one direction only?

Direct Current (C) Signup and view all the answers

What is the minimum current that a human being can feel as an electric shock?

1.8 mA (C) Signup and view all the answers

What is the main factor that affects the resistance of the skin?

Moisture content of the skin (C) Signup and view all the answers

What is the approximate inner resistance of a human body?

500 to 1000 ohms (A) Signup and view all the answers

At what current does a human being experience a painful shock?

3 mA (C) Signup and view all the answers

What is the current at which a human being can still move, but may cause a secondary accident?

5 mA to 16 mA (D) Signup and view all the answers

What is the approximate current that can cause death in a few minutes if it passes through the body for a few seconds?

100 mA (D) Signup and view all the answers

What is the minimum current required to produce a slight tingling sensation in the human body?

1.8 ma (B) Signup and view all the answers

What is the primary reason for increased risk of electric shock in damp locations?

People are excellent conductors of electricity (A) Signup and view all the answers

What is the maximum current that can cause a safe 'let-go' current, but may also cause secondary accidents?

5-16 ma (D) Signup and view all the answers

What type of injury results from accidents caused by an electrical shock?

Secondary injury (A) Signup and view all the answers

What is the minimum current that can cause certain ventricular fibrillation, which can be fatal?

100 ma (B) Signup and view all the answers

What is the main purpose of a Lock-out/Tag-out system?

To control hazardous energy sources during machine maintenance (B) Signup and view all the answers

What is the recommended frequency of inspecting and testing fixed electrical installations?

Periodically, depending on the type of equipment, usage, and environment (D) Signup and view all the answers

What is the purpose of a lockout device in a Lock-out/Tag-out system?

To prevent energizing of equipment during maintenance (A) Signup and view all the answers

What is the main benefit of carrying out preventative maintenance on electrical equipment?

To prevent danger from electrical equipment (A) Signup and view all the answers

What is the purpose of a tag out device in a Lock-out/Tag-out system?

To warn employees of potential hazards (B) Signup and view all the answers

What is the importance of using the correct wire gauge and cord length for extension cords?

To prevent overheating and electrical shock (A) Signup and view all the answers

What is the primary function of the housing in an electrical device?

To prevent electrical shock to the operator in case of a malfunction (A) Signup and view all the answers

What should you do if you sense the presence of an electrical hazard or exposed conductors?

Keep your distance and stay away (B) Signup and view all the answers

What is an example of improper circuit protection?

Using improper circuit protection or fuses (A) Signup and view all the answers

What should you do immediately in case of an electrical accident?

Turn off the electrical power source (D) Signup and view all the answers

What is an example of a hazardous wiring connection?

An overloaded connection (A) Signup and view all the answers