Electrical Machines Minimum allowable resistivity of power transformer insulating oil is generally taken as 1 X 1012 Ω - cm at 27°C and 0.1 X 1012 4 X 1012 Ω - cm at 27°C and 0.4 X 1012 2 X 1012 Ω - cm at 27°C and 0.2 X 1012 3 X 1012 Ω - cm at 27°C and 0.3 X 1012 1 X 1012 Ω - cm at 27°C and 0.1 X 1012 4 X 1012 Ω - cm at 27°C and 0.4 X 1012 2 X 1012 Ω - cm at 27°C and 0.2 X 1012 3 X 1012 Ω - cm at 27°C and 0.3 X 1012 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In shaded pole induction motors, the flux moves from ------------- region to ----------------- region respectively? unshaded, shaded shaded, shaded shaded, unshaded unshaded, unshaded unshaded, shaded shaded, shaded shaded, unshaded unshaded, unshaded ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In salient pole synchronous machine, if direct axis reactance and quadrature axis reactance is equal, then power developed due to reluctance is infinite value maximum zero any of the above infinite value maximum zero any of the above ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For an ideal transformer the winding should have maximum resistance on primary side and least resistance on secondary side no ohmic resistance on either side minimum resistance on primary side and maximum resistance on secondary side equal resistance on primary and secondary side maximum resistance on primary side and least resistance on secondary side no ohmic resistance on either side minimum resistance on primary side and maximum resistance on secondary side equal resistance on primary and secondary side ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A synchronous motor will deliver maximum power when load angle is equal to internal angle θ. load angle is 45°. load angle is 0°. input power factor is unity. load angle is equal to internal angle θ. load angle is 45°. load angle is 0°. input power factor is unity. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Essential conditions for two DC generators are connecting for parallel operation is/are both A and B. terminal voltage should be same. rating of generators should be same. polarities should be same. both A and B. terminal voltage should be same. rating of generators should be same. polarities should be same. ANSWER DOWNLOAD EXAMIANS APP
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