The positive, negative and zero sequence per unit impedance of two generators connected in parallel are X1 = 0.12 pu, X2 = 0.096 pu and X0 = 0.036 pu. For LG fault at generator terminals (with 1 pu voltage) the positive sequence current will be

Power Systems
The positive, negative and zero sequence per unit impedance of two generators connected in parallel are X1 = 0.12 pu, X2 = 0.096 pu and X0 = 0.036 pu. For LG fault at generator terminals (with 1 pu voltage) the positive sequence current will be

8.936 pu

10.936 pu

7.936 pu

9.936 pu

8.936 pu

10.936 pu

7.936 pu

9.936 pu

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Power Systems
The use of high speed circuit breakers

decrease system stability.

improves system stability.

increased the short circuit current.

reduces the short circuit current.

decrease system stability.

improves system stability.

increased the short circuit current.

reduces the short circuit current.

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Power Systems
The value of off diagonal elements is

sum of admittances connected at bus j

which is connected between bus i and bus j with positive sign

which is connected between bus i and bus j with negative sign

sum of admittances connected at bus i

sum of admittances connected at bus j

which is connected between bus i and bus j with positive sign

which is connected between bus i and bus j with negative sign

sum of admittances connected at bus i

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Power Systems
Rating of fuse wire is expressed in

Ampere.

Watts.

ÃŽÂ©.

Mho.

Ampere.

Watts.

ÃŽÂ©.

Mho.

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Power Systems
The voltage regulation of a line at full load 0.8 power factor is 11. A long transmission line under no load conditions, for a good voltage profile needs

shunt capacitor at receiving end

shunt resistance at receiving end

All of these

shunt reactor at receiving end

shunt capacitor at receiving end

shunt resistance at receiving end

All of these

shunt reactor at receiving end

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Power Systems
The daily energy produced in thermal power station is 720 MWh at a load factor of 0.6. What is the maximum demand of the station?

720 MW

30 MW

72 MW

50 MW

720 MW

30 MW

72 MW

50 MW

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Power Systems

Power Systems The positive, negative and zero sequence per unit impedance of two generators connected in parallel are X1 = 0.12 pu, X2 = 0.096 pu and X0 = 0.036 pu. For LG fault at generator terminals (with 1 pu voltage) the positive sequence current will be

Power Systems The use of high speed circuit breakers

Power Systems The value of off diagonal elements is

Power Systems Rating of fuse wire is expressed in

Power Systems The voltage regulation of a line at full load 0.8 power factor is 11. A long transmission line under no load conditions, for a good voltage profile needs

Power Systems The daily energy produced in thermal power station is 720 MWh at a load factor of 0.6. What is the maximum demand of the station?

Power Systems
The positive, negative and zero sequence per unit impedance of two generators connected in parallel are X1 = 0.12 pu, X2 = 0.096 pu and X0 = 0.036 pu. For LG fault at generator terminals (with 1 pu voltage) the positive sequence current will be

Power Systems
The use of high speed circuit breakers

Power Systems
The value of off diagonal elements is

Power Systems
Rating of fuse wire is expressed in

Power Systems
The voltage regulation of a line at full load 0.8 power factor is 11. A long transmission line under no load conditions, for a good voltage profile needs

Power Systems
The daily energy produced in thermal power station is 720 MWh at a load factor of 0.6. What is the maximum demand of the station?