# A three phase breaker is rated at 2000 MVA, 33 kV, its making current is...

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A three phase breaker is rated at 2000 MVA, 33 kV, its making current is

(A) 70 kA (B) 89 kA (C) 49 kA (D) 35 kA

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A 3-phase circuit breaker is rated at 1250 A, 2000 MVA, 33 kV, 4s. Its making current capacity will be   (a) 35 kA (b) 89 kA (c) 79 kA (d) 69 kA

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A three phase transformer can be used in emergency at reduced rating of 58% to deliver three phase power when it is connected (a) in star-delta (b) delta-star (c) star-star (d) delta-delta

A three phase transmission line delivers a load of 5 MW at 0.8 power factor lagging. Resistance of each conductor is 0.5 ohm / km. Receiving end voltage is 33 kV. If the line loss is not to exceed 10%, determine the length of the line.  (A) 7 km (B) 27.9 km (C) 56.8 km (D) 13.9 km

The sending and receiving end voltages of a three phase transmission line at 100 MW load are equal at 230 KV. The phase line impedance is j14 ohm. Calculate the maximum steady state power that can be transmitted over the line.  (A) 3778.5 MW (B) 2234.56 MW (C) 1784.19 MW (D) 512.37 MW

How many insulator disc used for 33 kV transmission voltage line?

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An alternator is connected to a bus. For a symmetrical fault at the bus, the fault level is 60 MVA. If another alternator is connected to the same bus, the new fault level will be (1) 120 MVA (2) 60 MVA (3) 30 MVA (4) 15 MVA