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The efficiency of modern steam turbines is about

Recent questions tagged arc

1 answer 3 views

Write the purpose of coal and ash handling unit. Also write different activities that arc carried out in this unit.

asked Sep 8, 2018 by Shimroz123
1 answer 21 views

The arc temperature in Oil Circuit Breaker may reach up to_______.  (A) 5,000° K (B) 8,000° K (C) 10,000° K (D) None of the above

asked May 8, 2018 in Switchgear And Protection by Shimroz123
1 answer 17 views

Arc resistance  (1) increases with increase in arc current (2) decrease with increase in arc current (3) is independent of arc current (4) is independent of arc length

asked May 1, 2018 in Utilization of electrical energy by Shimroz123
1 answer 30 views

For arc welding current range is usually  (1) 10 to 15 A (2) 30 to 40 A (3) 50 to 100 A (4) 100 to 350 A

asked Apr 30, 2018 in Utilization of electrical energy by Shimroz123
1 answer 14 views

Identify the correct combination of respective Electric arc welding and Electric resistance welding methods :  (A) Butt welding and Seam welding  (B) Hydrogen shielding and Projection welding  (C) Seam welding and Coated electrode welding  (D) Coated electrode welding and Hydrogen shielding

asked Apr 30, 2018 in Utilization of electrical energy by Shimroz123
1 answer 14 views

The arc voltage in a circuit breaker is :

asked Apr 29, 2018 in Utilization of electrical energy by Shimroz123
1 answer 10 views

The supply for arc welding is : 

asked Apr 29, 2018 in Utilization of electrical energy by Shimroz123
1 answer 28 views

Which of the following is used in a circuit breaker as the medium in which the arc forms? A) Insulating gas B) Insulating oil C) Vacuum D) All the above

asked Apr 29, 2018 in Electrical Engineering by Shimroz123
1 answer 15 views
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