Electrical Machines
In case of DC Shunt Motor electromagnetic torque developed is

 Proportional to the armature current.
 Inversely proportional to the armature current.
 None of above.
 Proportional to the square of armature current.

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Electrical Machines
The results of a slip test for determining direct axis (Xd) and quadrature axis (Xq) reactances of a star connected salient pole alternator are given below Phase values: Vmax = 108 V ; Vmin = 96 V Imax = 12 A ; Imin = 10 A Hence the two reactances will be

 Xd = 10.8Ω and Xq = 8Ω
 Xd = 9Ω and Xq = 9.6Ω
 Xd = 8Ω and Xq = 10.8Ω
 Xd = 9.6Ω and Xq = 9Ω

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