DC Generators The bearings used to support the rotor shafts are generally Ball bearings Magnetic bearings Needle bearings Bush bearings Ball bearings Magnetic bearings Needle bearings Bush bearings ANSWER DOWNLOAD EXAMIANS APP
DC Generators In a practical dc generator, mechanical efficiency is Less than electrical efficiency More than electrical efficiency Equal to electrical efficiency None of the listed here Less than electrical efficiency More than electrical efficiency Equal to electrical efficiency None of the listed here ANSWER DOWNLOAD EXAMIANS APP
DC Generators The commutator pitch for simplex lap winding is equal to 1 Number of pairs of poles None of the listed here Numbers of poles in the machine 1 Number of pairs of poles None of the listed here Numbers of poles in the machine ANSWER DOWNLOAD EXAMIANS APP
DC Generators Which of the following will not prevent a self excited shunt generator from building upto its full voltage? Wrong direction of rotation No residual magnetism Speed too high Open field Wrong direction of rotation No residual magnetism Speed too high Open field ANSWER DOWNLOAD EXAMIANS APP
DC Generators In case of dc machines, mechanical losses are primary function of None of the listed here Current Voltage Speed None of the listed here Current Voltage Speed ANSWER DOWNLOAD EXAMIANS APP
DC Generators In a cummulative compounded generator the shunt and series fields ______ each other. None of the listed here Sometime aid, sometime oppose Aid Oppose None of the listed here Sometime aid, sometime oppose Aid Oppose ANSWER DOWNLOAD EXAMIANS APP
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