Electrical Machines DC machine windings are full pitched either of these None of these short pitched full pitched either of these None of these short pitched ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following methods are used to control the speed of DC motors is field current control supply voltage control All of these armature circuit resistance control field current control supply voltage control All of these armature circuit resistance control ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Equalizer rings are used in which of the followings? both 1 and 2 None of these lap winding wave winding both 1 and 2 None of these lap winding wave winding ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The low voltage winding of a 400/230 V single phase 50 Hz transformer is to be connected to keep the magnetization current at the same level in both the cases the voltage at 25 Hz should be 460 V 65 V 230 V 115 V 460 V 65 V 230 V 115 V ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Swinburne's test is applicable to DC Shunt motor. DC series motor. DC compound motor. DC shunt and level Compound motor. DC Shunt motor. DC series motor. DC compound motor. DC shunt and level Compound motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Maximum allowable tan - delta (tanδ) of dielectric dispassion factor of power transformer insulating oil is generally taken as 0.5 at 90°C. 3 at 90°C. 1 at 90°C. 2 at 90°C. 0.5 at 90°C. 3 at 90°C. 1 at 90°C. 2 at 90°C. ANSWER DOWNLOAD EXAMIANS APP
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