Electrical Machines If terminal voltage of one 1000 rpm shunt motor is reduced to half the speed of the motor will be 500 rpm 250 rpm 2000 rpm 1000 rpm 500 rpm 250 rpm 2000 rpm 1000 rpm 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 200 MW and 400MW generator 1 gets over load generator 2 gets over load None of these 200 MW and 400MW generator 1 gets over load generator 2 gets over load ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A large series motor is never started without some mechanical on it because otherwise it will Produce sparking at brushes. Draw too much current. Develop excessive speed and damage itself. Open fuse or circuit breaker. Produce sparking at brushes. Draw too much current. Develop excessive speed and damage itself. Open fuse or circuit breaker. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In DC machines internal characteristics are plotted between Vt vs Ia Eg vs Ia Eg vs load current Vt vs load current Vt vs Ia Eg vs Ia Eg vs load current Vt vs load current ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the mechanical angle α between the stator and rotor poles increases, then the stator current Increases. Remains unchanged. Decreases. None of above. Increases. Remains unchanged. Decreases. None of above. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a DC Shunt Motor the speed can be increased by Decreasing the field current. Increasing the armature current. Increasing the field current. Increasing the field current. Decreasing the field current. Increasing the armature current. Increasing the field current. Increasing the field current. ANSWER DOWNLOAD EXAMIANS APP
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