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 ωt)

Y = Vm Sin(ωt +240°) & B = Vm Sin(ωt +120°)

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

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

Y = Vm Sin(ωt +240°) & B = Vm Sin(ωt +120°)

Y = Vm Sin(ωt +90°) & B = Vm Sin(ωt -90°)

What is the phase current in phase Y and in phase B out of R-Y-B when

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 ωt)
A.	Y = Vm Sin(ωt +60°) & B = VmSin(ωt +120°)
B.	Y = Vm Sin(ωt +120°) & B = VmSin(ωt+240°)
C.	Y = Vm Sin(ωt +240°) & B = Vm Sin(ωt +120°)
D.	Y = Vm Sin(ωt +90°) & B = Vm Sin(ωt -90°)
Answer» C. Y = Vm Sin(ωt +240°) & B = Vm Sin(ωt +120°)

Discussion

No Comment Found

Related MCQs

Steady state direct axis reactance is greater than subtransient direct axis reactance and transient direct axis reactance.
Which of the following reactance is eliminated first in synchronous generator just after the symmetrical fault?
If Xl is leakage reactance, Xf is reactance due to field winding, Xdw is reactance due to damper winding and Xa is armature winding reactance then reactance of synchronous generator in subtransient state is due to which of the following?
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 ωt)
In a synchronous generator for how much time transient period of symmetrical short circuit current lasts?
WHICH_OF_THE_FOLLOWING_REACTANCE_IS_ELIMINATED_FIRST_IN_SYNCHRONOUS_GENERATOR_JUST_AFTER_THE_SYMMETRICAL_FAULT??$
Steady_state_direct_axis_reactance_is_greater_than_subtransient_direct_axis_reactance_and_transient_direct_axis_reactance.$
If Xl is leakage reactance, Xf is reactance due to field winding, Xdw is reactance due to damper winding and Xa is armature winding reactance then reactance of synchronous generator in subtransient state is due to which of the following?
In case of synchronous generator the reactants is constant.
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 ‚âà√¨‚àö¬¢t)$

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 ωt)

Discussion

No Comment Found

Related MCQs

Reply to Comment