Electrical Machines Transformer cooling and insulating oil must be of low BDV. low viscosity. low resistivity. high viscosity. low BDV. low viscosity. low resistivity. high viscosity. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The current drawn by the armature of DC motor is directly proportional to The torque required. The voltage across the terminals. The speed of motor. None of above. The torque required. The voltage across the terminals. The speed of motor. None of above. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In which of the following generators negative voltage regulation can occur? both B and C over compound generator shunt generator series generators both B and C over compound generator shunt generator series generators ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What is the mechanical power developed by a DC series motor is maximum? None of above. Back emf is equal to half the applied voltage. Back emf is equal to zero. Back emf is equal to applied voltage. None of above. Back emf is equal to half the applied voltage. Back emf is equal to zero. Back emf is equal to applied voltage. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A delta/star transformer is connected in parallel to a star/delta transformer. The turn ratio former is x times latter, the x is 1/√3 1/3 3 √3 1/√3 1/3 3 √3 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines When maximum flux density is constant, the eddy current losses are proportional to f f2 V2 V f f2 V2 V ANSWER DOWNLOAD EXAMIANS APP
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