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

14.28 and 9.60 ÃŽÂ©.

8.248 and 9.60 ÃŽÂ©.

8.248 and 5.54 ÃŽÂ©.

14.28 and 5.54 ÃŽÂ©.

14.28 and 9.60 ÃŽÂ©.

8.248 and 9.60 ÃŽÂ©.

8.248 and 5.54 ÃŽÂ©.

14.28 and 5.54 ÃŽÂ©.

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Electrical Machines
Armature reaction in dc motor results

open circuit.

short circuit.

increase in speed.

decrease in speed.

open circuit.

short circuit.

increase in speed.

decrease in speed.

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Electrical Machines
Reactive power generated or delivered significantly depends on

load angle.

frequency.

excitation.

both 1 and 2.

load angle.

frequency.

excitation.

both 1 and 2.

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Electrical Machines
A frog leg winding is used in a DC machine to eliminate

the use of compensating winding.

the use equalizer in lap winding.

reactance voltage produced due to communication.

the use drum winding.

the use of compensating winding.

the use equalizer in lap winding.

reactance voltage produced due to communication.

the use drum winding.

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Electrical Machines
A motor armature conductor of length 0.5 m is exposed to a flux density of 4 Wb / m2. Calculate the force experienced by the conductor, when the armature current is 5 Amp?

15 N.

Can't be determined.

20 N.

None of these.

15 N.

Can't be determined.

20 N.

None of these.

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Electrical Machines
DC motors are stopped by opening line switches and not by forcing the handle of the motor starter back to OFF position. This is due to occurance of

Both of above.

Heavy sparking at brushes.

Heavy sparking at the first stud of starting resistance steps.

None of these.

Both of above.

Heavy sparking at brushes.

Heavy sparking at the first stud of starting resistance steps.

None of these.

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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 Armature reaction in dc motor results

Electrical Machines Reactive power generated or delivered significantly depends on

Electrical Machines A frog leg winding is used in a DC machine to eliminate

Electrical Machines A motor armature conductor of length 0.5 m is exposed to a flux density of 4 Wb / m2. Calculate the force experienced by the conductor, when the armature current is 5 Amp?

Electrical Machines DC motors are stopped by opening line switches and not by forcing the handle of the motor starter back to OFF position. This is due to occurance of

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
Armature reaction in dc motor results

Electrical Machines
Reactive power generated or delivered significantly depends on

Electrical Machines
A frog leg winding is used in a DC machine to eliminate

Electrical Machines
A motor armature conductor of length 0.5 m is exposed to a flux density of 4 Wb / m2. Calculate the force experienced by the conductor, when the armature current is 5 Amp?

Electrical Machines
DC motors are stopped by opening line switches and not by forcing the handle of the motor starter back to OFF position. This is due to occurance of