Electrical Machines An inverted V curve of synchronous motor shows variation of power factor and supply voltage during hunting. supply voltage and excitation current at constant load. supply voltage and field current at constant excitation. power factor and DC excitation at constant load. power factor and supply voltage during hunting. supply voltage and excitation current at constant load. supply voltage and field current at constant excitation. power factor and DC excitation at constant load. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the load current and the flux of a DC motor are held constant and voltage applied across its armature is increased by 5%, the speed of the motor will remain unchanged. depend on other factors. reduce by 5 %. increase by 5 %. remain unchanged. depend on other factors. reduce by 5 %. increase by 5 %. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The power developed by salient pole synchronous machine is/are None of these both 1 and 2 excitation power only power due to saliency or reluctance only None of these both 1 and 2 excitation power only power due to saliency or reluctance only ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a DC generator the actual flux distribution depends upon size of air gap. clearance between tips of the adjacent pole shoes. shape of the pole shoe. all of above. size of air gap. clearance between tips of the adjacent pole shoes. shape of the pole shoe. all of above. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which single phase motor is used for a refrigerator? Split phase. Capacitor run. Repulsion. Universal. Split phase. Capacitor run. Repulsion. Universal. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Two transformers with identical rating, are designed with flux densities of 1.2 and 1.4 Wb / m2 respectively. The weight of first transformer per kVA is equal to that of second transformer. less than that of second transformer. none of these. more than that of second transformer. equal to that of second transformer. less than that of second transformer. none of these. more than that of second transformer. ANSWER DOWNLOAD EXAMIANS APP
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