1. high impedance to carrier frequency but low impedance to power frequency
2. low impedance to both carrier and power frequency
3. high impedance to both carrier and power frequency
4. low impedance to carrier frequency but high impedance to power frequency
high impedance to both carrier and power frequency
1. dδ/dt>0,dP/dδ>0
2. dδ/dt=0,dP/dδ>0
3. dδ/dt
4. dδ/dt
dδ/dt<0,dP/dδ=0
1. Zero
2. 10 MW
3. 30 MW
4. 50 MW
10 MW
1. 400 kV
2. 500 kV
3. 320 kV
4. 417 kV
500 kV
1. 0.8Ω
2. 0.0032Ω
3. 0.03125Ω
4. 32.0Ω
32.0Ω
1. 2.5
2. 5.0
3. 10.0
4. 35.0
35.0
1. leading VARS (QR) goes to the load for any values of VS and VR
2. leading VARS (QR) goes to the load ONLY for VS =VR
3. lagging VARS (QR) goes to the load for any values of VS and VR
4. lagging VARs (QR) goes to the load ONLY for VS = VR
lagging VARS (QR) goes to the load for any values of VS and VR
1. star-star
2. delta-delta
3. star-delta
4. delta - star with neutral grounded
delta-delta
1. 25Ω
2. 250Ω
3. 5000Ω
4. 1000Ω
5000Ω
1. reactance relay
2. directional impedance relay
3. impedance relay
4. mho relay
mho relay