Electrical Safety

1. Which of the following is not a primary electrical hazard?

• A. Shock & Burns

• B. Explosion

• C. Arc flash & arc blast

• D. None of the above

2. Which of the following is a 1st line defense to prevent electrical incident?

• A. Circuit breaker

• B. Arc flash PPE

• C. Voltage Detector

• D. Fault tree analysis

3. Which of the following is the element no. of SMS for Electrical Safety Standard?

• A. OHS – 07 

• B. OHS – 12 

• C. OHS – 12 F

• D. OHS – 08 

4. Voltage of 30 V rms or 60 V Dc is considered as safe.

• A. True

• B. False

5. Which of the following can be considered as ‘safe value of current?

• A. 15 ma

• B. 10 ma

• C. 5 ma

• D. 20 ma

6. Which of the following is the colour of the “Neutral” in a three-core cable? 

• A. Black

• B. Red

• C. Blue

• D. Yellow

7. Which of the following substances is considered to be a good conductor of electricity? 

• A. Cold water

• B. Distilled water

• C. Warm water

• D. Milk 

8. Which gas is produced during storage battery charging?

• A. Hydrogen 

• B. Oxygen 

• C. Nitrogen

• D. None of the above

9. Purpose of earthing is for protecting

• A. Instruments

• B. Equipment 

• C. Human life

• D. All the above 

10. Short circuit can occur due to which of the following?

• A. Faulty construction of circuit  

• B. Worn insulation 

• C. Faulty connection 

• D. All the above