Electrical Machines Which type of single phase induction motor is having the highest power factor at full load ? Split phase type. Capacitor start. Capacitor run type. Shaded pole type. Split phase type. Capacitor start. Capacitor run type. Shaded pole type. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a three phase slip-ring induction motor, brushes are connected to DC supply. equalizing coils. 3 - Φ AC supply. external star-connected resistors. DC supply. equalizing coils. 3 - Φ AC supply. external star-connected resistors. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In travelling cranes for swing action which motor is preferred? Reluctance motor. AC slip ring IM. DC series motor. Capacitor type induction motors. Reluctance motor. AC slip ring IM. DC series motor. Capacitor type induction motors. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What is the emf generated by a 4 pole Lap connected DC Motor rotating at 1500 rpm having 1000 conductors and useful flux per pole is 0.4 mWb. 20 volts. 40 volts. 10 volts. 30 volts. 20 volts. 40 volts. 10 volts. 30 volts. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Minimum allowable resistivity of power transformer insulating oil is generally taken as 4 X 1012 Ω - cm at 27°C and 0.4 X 1012 2 X 1012 Ω - cm at 27°C and 0.2 X 1012 1 X 1012 Ω - cm at 27°C and 0.1 X 1012 3 X 1012 Ω - cm at 27°C and 0.3 X 1012 4 X 1012 Ω - cm at 27°C and 0.4 X 1012 2 X 1012 Ω - cm at 27°C and 0.2 X 1012 1 X 1012 Ω - cm at 27°C and 0.1 X 1012 3 X 1012 Ω - cm at 27°C and 0.3 X 1012 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In induction motors, there is large decrease in maximum power factor when the dispersion coefficient is ________________. remains same. decreased. increased. kept constant to certain value. remains same. decreased. increased. kept constant to certain value. ANSWER DOWNLOAD EXAMIANS APP
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