A 33kV feeder protected by overcurrent relay has a Plug Setting Multiplier (PSM) of 10 and a Time Multiplier Setting (TMS) of 0.3. If the fault current is 3000A and CT ratio is 400/1, what is the operating time? (Use standard IDMT curve: t = 0.14 x TMS / (PSM^0.02 - 1)) A) 0.15 seconds B) 0.62 seconds C) 1.20 seconds D) 2.50 seconds Answer: B (0.62 seconds)
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You are an SEWA project engineer. An earth fault occurs on a 415V feeder. The upstream MCCB fails to trip. What is your immediate action? A) Check the load current B) Verify earth fault loop impedance C) Replace the MCCB D) Increase the MCCB rating Answer: B (Verify earth fault loop impedance) sewa electrical engineer exam questions pdf portable
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To give you a taste of what a high-quality contains, here are three typical questions: A 33kV feeder protected by overcurrent relay has
For aspiring electrical engineers looking to secure a position at the Sharjah Electricity, Water and Gas Authority (SEWA), the path is rigorous. The SEWA Electrical Engineer exam is notoriously competitive, testing not only theoretical knowledge but also practical application in power systems, distribution, protection, and safety regulations specific to the UAE.
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According to SEWA Distribution Code, the minimum clearance between an 11kV overhead conductor and the ground over a public road is: A) 4.5 meters B) 5.5 meters C) 6.1 meters D) 7.0 meters Answer: C (6.1 meters)