Electrical Machines The principle of dynamically induced emf is utilized in generator. thermocouple. choke. transformer. generator. thermocouple. choke. transformer. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Armature reaction in DC generators will result in open circuit. increase in slip. reduction in generated emf. short circuit. open circuit. increase in slip. reduction in generated emf. short circuit. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Field divertor method of speed control of a DC series motor gives speed above rated one due to reduction of Line current. Armature current. None of above. Field current. Line current. Armature current. None of above. Field current. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A shunt generator has a critical field resistance of 300 Ω at a speed of 800 rpm if the speed is raised to 1000 rpm the critical field resistance is 150 Ω. 145 Ω. 375 Ω. 225 Ω. 150 Ω. 145 Ω. 375 Ω. 225 Ω. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines No load test of 3-phase induction motor gives which of the following? constant loss both A and B variable loss None of these constant loss both A and B variable loss None of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For small value armature current Ia the torque developed by a DC series motor is proportional to 1/Ia. Ia2. Ia. √Ia. 1/Ia. Ia2. Ia. √Ia. ANSWER DOWNLOAD EXAMIANS APP
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