Electrical Machines Oil is provided in an oil filled transformer for both cooling and insulation. insulating. cooling. lubrication. both cooling and insulation. insulating. cooling. lubrication. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines When the rotor of a 3 phase induction motor is blocked then the slip is 0.3. 1. 0.54. 0.7. 0.3. 1. 0.54. 0.7. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In which transformer, the tertiary winding is used? Delta - star Star - star Delta - delta Star - delta Delta - star Star - star Delta - delta Star - delta ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Universal motor have which of the following application? Lift. Food mixer. Domestic pump. Traction. Lift. Food mixer. Domestic pump. Traction. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Maximum allowable tan - delta (tanδ) of dielectric dispassion factor of power transformer insulating oil is generally taken as 1 at 90°C. 3 at 90°C. 0.5 at 90°C. 2 at 90°C. 1 at 90°C. 3 at 90°C. 0.5 at 90°C. 2 at 90°C. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A synchronous machine has P number of poles, find the relation between electrical angular momentum (ωe) and mechanical angular momentum (ωm)? ωe = P/2*ωm ωe = ωm ωe = P*ωm ωe = 2/P*ωm ωe = P/2*ωm ωe = ωm ωe = P*ωm ωe = 2/P*ωm ANSWER DOWNLOAD EXAMIANS APP
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