1. reduces the short circuit current
2. improves system stability
3. decreases system stability
4. increases the short circuit current
improves system stability
1. magnetizing inrush current
2. unbalanced operation
3. lightning
4. switching over voltages
switching over voltages
1. dangerously high voltage might develop across the secondary
2. the ferromagnetic core may develop residual magnetism
3. the reflected impedance may prevent the flow of current in the primary, circuit
4. none of these
dangerously high voltage might develop across the secondary
1. primary protection
2. back up protection
3. simultaneous protection
4. remote protection
primary protection
1. 61.73 MVAr
2. 55.56 MVAr
3. 45.0 MVAr
4. 40.5 MVAr
40.5 MVAr
1. 1.5'V, 3 W
2. 1.35 V, 3 W
3. 1.5 V, 2.43 W
4. 1.35 V, 2.34
1.35 V, 2.34
1. mho relay
2. reactance relay
3. impedance relay
4. all are equally affected
impedance relay
1. R2 and R3 should be chosen as variables
2. R2 and C4 should be chosen as variables
3. R4and C4 should be chosen as variables
4. R3and C4 should be chosen as variables
R4and C4 should be chosen as variables
1. decreasing the length Of Potentiometer wire
2. increasing the length of potentiometer, wire
3. decreasing the current in potentiometer, wire
4. decreasing the resistance in the rheostat in series with the battery.
decreasing the current in potentiometer, wire
1. 1 volt
2. 1.25 volt
3. 2.5 volts
4. 4 volts
4 volts