The result of slip test on a 3-phase, 20 KVA, 400 V, 50 Hz connected salient pole alternator is given below- Phase value: Vmax = 100 V, Vmin = 96 V, Imax = 10 A and I min = 7 A. The direct and quadranature axis reactances are respectively

Electrical Machines
The result of slip test on a 3-phase, 20 KVA, 400 V, 50 Hz connected salient pole alternator is given below- Phase value: Vmax = 100 V, Vmin = 96 V, Imax = 10 A and I min = 7 A. The direct and quadranature axis reactances are respectively

8.248 and 5.54 ÃŽÂ©.

8.248 and 9.60 ÃŽÂ©.

14.28 and 5.54 ÃŽÂ©.

14.28 and 9.60 ÃŽÂ©.

8.248 and 5.54 ÃŽÂ©.

8.248 and 9.60 ÃŽÂ©.

14.28 and 5.54 ÃŽÂ©.

14.28 and 9.60 ÃŽÂ©.

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Electrical Machines
A 230 V dc series generator is driven at its rated speed. The no-load voltage across its armature terminals would be

6 V

230 V

somewhat less than 230 V

somewhat more than 230 V

6 V

230 V

somewhat less than 230 V

somewhat more than 230 V

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Electrical Machines
A 200 V DC machine supplies 20 A at 200 V as a generator. The armature resistance is 0.2 Ω. If the machine is now operated as a motor at same terminal voltage and current but with the flux increased by 10%, the ratio of motor speed to generator speed is

0.87

0.96

1.06

0.95

0.87

0.96

1.06

0.95

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Electrical Machines
In a lap winding dc machine number of conductors are 100 and number of parallel paths are 10. Find the average pitch

1

10

50

100

1

10

50

100

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Electrical Machines
Capacitor start capacitor run provides

high staring torque only.

none.

high power factor only.

high staring torque and high power factor.

high staring torque only.

none.

high power factor only.

high staring torque and high power factor.

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Electrical Machines
Two generators operating in parallel with rating 50MW and 100MW respectively. Both their respective governor settings are identical as 4%, consider same no load frequency. How will the machine share a common load of 100 MW

50 MW and 50 MW respectively

any of the above

66.67 MW and 33.33 MW respectively

33.33 MW and 66.67 MW respectively

50 MW and 50 MW respectively

any of the above

66.67 MW and 33.33 MW respectively

33.33 MW and 66.67 MW respectively

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Electrical Machines

Electrical Machines The result of slip test on a 3-phase, 20 KVA, 400 V, 50 Hz connected salient pole alternator is given below- Phase value: Vmax = 100 V, Vmin = 96 V, Imax = 10 A and I min = 7 A. The direct and quadranature axis reactances are respectively

Electrical Machines A 230 V dc series generator is driven at its rated speed. The no-load voltage across its armature terminals would be

Electrical Machines A 200 V DC machine supplies 20 A at 200 V as a generator. The armature resistance is 0.2 Ω. If the machine is now operated as a motor at same terminal voltage and current but with the flux increased by 10%, the ratio of motor speed to generator speed is

Electrical Machines In a lap winding dc machine number of conductors are 100 and number of parallel paths are 10. Find the average pitch

Electrical Machines Capacitor start capacitor run provides

Electrical Machines Two generators operating in parallel with rating 50MW and 100MW respectively. Both their respective governor settings are identical as 4%, consider same no load frequency. How will the machine share a common load of 100 MW

Electrical Machines
The result of slip test on a 3-phase, 20 KVA, 400 V, 50 Hz connected salient pole alternator is given below- Phase value: Vmax = 100 V, Vmin = 96 V, Imax = 10 A and I min = 7 A. The direct and quadranature axis reactances are respectively

Electrical Machines
A 230 V dc series generator is driven at its rated speed. The no-load voltage across its armature terminals would be

Electrical Machines
A 200 V DC machine supplies 20 A at 200 V as a generator. The armature resistance is 0.2 Ω. If the machine is now operated as a motor at same terminal voltage and current but with the flux increased by 10%, the ratio of motor speed to generator speed is

Electrical Machines
In a lap winding dc machine number of conductors are 100 and number of parallel paths are 10. Find the average pitch

Electrical Machines
Capacitor start capacitor run provides

Electrical Machines
Two generators operating in parallel with rating 50MW and 100MW respectively. Both their respective governor settings are identical as 4%, consider same no load frequency. How will the machine share a common load of 100 MW