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 Ω.
 8.248 and 9.60 Ω.
 14.28 and 9.60 Ω.
  14.28 and 5.54 Ω.

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Electrical Machines
A compound dc generator is delivering full load current at a terminal voltage of 230 V. Its series-field winding gets short circuited. If its terminal voltage 1. becomes more than 230 V, it is overcompounded generator 2. becomes more than 230 V, it is differentially compounded generator 3. becomes less than 230 V, it is overcompounded generator 4. becomes less than 230 V, it is differentially compounded generator 5. becomes less than 230 V, it is level compounded generator From these, the correct answer is

 1, 4, 5
 2,3
 2, 3, 5
 1, 4

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Electrical Machines
Flashing of DC generator means

None of these
  creation of residual magnetism by a DC source.
  increasing flux density by providing extra ampere-turns in field.
 neutralization of residual magnetism.

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