Electrical Machines The material used for commutator brushes is mostly carbon. copper. cast iron. mica. carbon. copper. cast iron. mica. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 230 V dc series generator is driven at its rated speed. The no-load voltage across its armature terminals would be somewhat less than 230 V 230 V 6 V somewhat more than 230 V somewhat less than 230 V 230 V 6 V somewhat more than 230 V ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The leakage reactance of a 3-phase alternator is determined by performing short circuit and slip tests. open circuit and zero power factor tests. zero power factor and slip tests. open circuit and short circuit tests. short circuit and slip tests. open circuit and zero power factor tests. zero power factor and slip tests. open circuit and short circuit tests. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Maximum power developed by a synchronous motor depends on excitation and load angle supply voltage, load angle and excitation supply voltage and excitation supply voltage and load angle excitation and load angle supply voltage, load angle and excitation supply voltage and excitation supply voltage and load angle ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The emf induced in a conductor rotating in a bipolar field is None of these DC. AC. both of above. None of these DC. AC. both of above. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The short circuit test on a transformer is conducted to obtain copper losses. hysteresis loss. eddy current loss. core loses only. copper losses. hysteresis loss. eddy current loss. core loses only. ANSWER DOWNLOAD EXAMIANS APP
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