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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