Electrical Machines A 3 - Φ slip ring motor has short-circuited rotor. wound rotor. double cage rotor. any of the above. short-circuited rotor. wound rotor. double cage rotor. any of the above. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A three phase induction motor has a synchronous speed of 1500 rpm the machine runs at 1460 rpm at a particular load. The slip at this load is ___________. 5 %. 1.5 %. 2.67 %. 30 %. 5 %. 1.5 %. 2.67 %. 30 %. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Consider the following statements regarding dc machines : 1. possible resistance of shunt-field winding is 1 Ω 2. possible resistance of series-field winding is 1 Ω 3. electrographite brushes are used for 230 V, 10 A machines 4. Copper-graphite brushes are used for 230 V, 10 A machines 5. Possible armature-circuit resistance is 1 Ω From these, the correct statements are 2, 3 , 5 2, 4 ,5 1, 3, 5 1, 4 2, 3 , 5 2, 4 ,5 1, 3, 5 1, 4 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A differentially compound motor under high-over-load conditions will behave like a / an cummulative compound motor. series motor. AC synchronous motor. shunt motor. cummulative compound motor. series motor. AC synchronous motor. shunt motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Poles of DC machine are often laminated to reduce pulsation loss. reduce armature reaction. dissipate more heat. reduce iron weight. reduce pulsation loss. reduce armature reaction. dissipate more heat. reduce iron weight. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following pairs is/are correct? semi closed slot-----leakage flux is moderate open slot----- leakage flux is less All of these closed slot----- leakage flux is high semi closed slot-----leakage flux is moderate open slot----- leakage flux is less All of these closed slot----- leakage flux is high ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS