Electrical Machines Hysteresis loss is proportional to f3. f2. f. f1.5. f3. f2. f. f1.5. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Flux density under leading pole tips in case of generator will None of these increase decrease either increase or decrease None of these increase decrease either increase or decrease ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The armature reaction mmf in a DC machines has a form of sinusoidal. triangular. trapezoidal. rectangular. sinusoidal. triangular. trapezoidal. rectangular. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A separately-excited DC generator, running at rated speed, has 6 volts across its armature terminals with no field current. When field winding is excited with one ampere, the voltage builds up to 250 V at no load. In case field current is reduced to zero, with the speed remaining unaltered, the armature terminal voltage would be more than 6 V zero less than 6 V 6 V more than 6 V zero less than 6 V 6 V ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Two synchronous generators operating in parallel 200 MW and 400 MW respectively. The drooping characteristics of their governors are 4% and 5% from no load to full load. Consider the governors operating at 50Hz on no load. How will the machine share, if the load is 600 MW? None of these generator 2 gets over load generator 1 gets over load 200 MW and 400MW None of these generator 2 gets over load generator 1 gets over load 200 MW and 400MW ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following statements are correct ? Both 1 and 2. None of these The leakage reactance of the induction motor should be small. A small value of leakage reactance will increase the maximum power output of motor. Both 1 and 2. None of these The leakage reactance of the induction motor should be small. A small value of leakage reactance will increase the maximum power output of motor. ANSWER DOWNLOAD EXAMIANS APP
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