Safety

Multiple Choice Questions Related with Electrical Safety.

 

#1. In arc welding voltage required to maintain the arc is in the range of….?

incorrect

current range;60 to 600A

#2. Danger 440V’ plates are…?

#3. Which motor should not be used for centrifugal pumps?

#4. A domestic mixer uses …. motor?

#5. Filament lamp operate at power factor of …..?

#6. Which motor used in electric traction?

#7. Ground resistance should be designed such that it is…?

#8. Ground resistance should be designed such that it is…?

#9. The conductor used in wiring should be of…?

#10. Current transformer uses…?

#11. Grid synchronization failure can cause….?

#12. Which circuit breaker is used for 1.5 T air conditioner?

#13. When connected to bypass a prrotective circuit is known as…?

#14. Which of the following is used as the heating unit of an electric kettle?

#15. What should be the height of a single pole switch?

#16. The type of earthing suitable for sandy areas is….?

#17. How can the speed of a table fan be controlled?

#18. Earthing wires are usually made from…?

#19. According to N.E rule the colour code for the neutral wire is….?

#20. As per indian electricity standard, What is the allowable voltage variation in low or medium voltage supply?

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