What is the phase current in phase Y and in phase B out of R-Y-B when sudden short circuit to all three phases occurs at no load? It is given that after fault current in phase R is equal (Vm Sin t)

Question

What is the phase current in phase Y and in phase B out of R-Y-B when sudden short circuit to all three phases occurs at no load? It is given that after fault current in phase R is equal (Vm Sin  t)

TuteeHUB · Accepted Answer

Y = V_m Sin( t +240 ) & B = V_m Sin( t +120 )

TuteeHUB · Answer

Y = Vm Sin( t +60 ) & B = VmSin( t +120 )

TuteeHUB · Answer

Y = Vm Sin( t +120 ) & B = VmSin( t+240 )

TuteeHUB · Answer

Y = Vm Sin( t +240 ) & B = Vm Sin( t +120 )

TuteeHUB · Answer

Y = Vm Sin( t +90 ) & B = Vm Sin( t -90 )

1.	What is the phase current in phase Y and in phase B out of R-Y-B when sudden short circuit to all three phases occurs at no load? It is given that after fault current in phase R is equal (Vm Sin t)
A.	Y = V<sub>m</sub> Sin( t +60 ) & B = V<sub>m</sub>Sin( t +120 )
B.	Y = V<sub>m</sub> Sin( t +120 ) & B = V<sub>m</sub>Sin( t+240 )
C.	Y = V<sub>m</sub> Sin( t +240 ) & B = V<sub>m</sub> Sin( t +120 )
D.	Y = V<sub>m</sub> Sin( t +90 ) & B = V<sub>m</sub> Sin( t -90 )
Answer» C. Y = V<sub>m</sub> Sin( t +240 ) & B = V<sub>m</sub> Sin( t +120 )

What is the phase current in phase Y and in phase B out of R-Y-B when sudden short circuit to all three phases occurs at no load? It is given that after fault current in phase R is equal (Vm Sin t)

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