DC Generators Magnetic field in a D.C. generator is produced by None of these Permanent magnets Both (A) and (B) Electromagnets None of these Permanent magnets Both (A) and (B) Electromagnets ANSWER DOWNLOAD EXAMIANS APP
DC Generators If the value of shunt field resistance of a shunt generator is greater than the critical resistance, the generator will Excite to one half of full voltage Fail to excite Excite to full voltage None of the listed here Excite to one half of full voltage Fail to excite Excite to full voltage None of the listed here ANSWER DOWNLOAD EXAMIANS APP
DC Generators The armature of a dc machine is made of ______ Cast steel Soft iron Silocon steel Wrought iron Cast steel Soft iron Silocon steel Wrought iron ANSWER DOWNLOAD EXAMIANS APP
DC Generators The bearings used to support the rotor shafts are generally Ball bearings Magnetic bearings Bush bearings Needle bearings Ball bearings Magnetic bearings Bush bearings Needle bearings ANSWER DOWNLOAD EXAMIANS APP
DC Generators The field winding of a dc shunt machine usually caries _______ of the rated current of the machine. Less than 0.5 % 15 to 25% 2% to 5% More than 20% Less than 0.5 % 15 to 25% 2% to 5% More than 20% ANSWER DOWNLOAD EXAMIANS APP
DC Generators In a cummulative compounded generator the shunt and series fields ______ each other. Aid None of the listed here Sometime aid, sometime oppose Oppose Aid None of the listed here Sometime aid, sometime oppose Oppose ANSWER DOWNLOAD EXAMIANS APP
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