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What will happen to speed-torque characteristics of an induction motor is the rotor resistance is increased?
If Rotor resistance is increased torque is increased
Why induction motor current increase when load increase?
The slip is proportional to the load torque in an induction motor. This can also be seen as a reduction in speed causing extra current to be induced in the rotor to supply the increased torque.
Why current will reduces after motor runs in constant?
Because the slip angle between magnetic fields decreases as the rotor comes up to speed.
Why do you use induction generators in wind generation rather than synchronous generators?
If you use synchronous generator... you need rotor to rotate always in synchronous speed... practically it s not possible always to produce that speed by air flow... Air flow always varies...But using induction generator, you need to get speed to make slip as positive value.. it is always possible...so induction generator is best one..
What are the functions of slip ring carbon brush external resistor in an alternalting EMF generator?
good question the use of slipring carbon brush is to give excitement to the generator , as the carbon brosh contact the rotor slip the rotaion and the speed of the generator increases we can say as an external force by anonrafee blueroz_27@yahoo.com
What will happen to speed-torque characteristics of an induction motor is the rotor resistance is increased?
If Rotor resistance is increased torque is increased
What changes to an electric generator are required to increase frequency?
To increase the frequency output of an electric generator, the speed of rotation needs to be increased. This can be achieved by either increasing the mechanical input driving the generator, such as through a higher rotational speed or by adjusting the number of rotor poles in the generator. These changes will result in the generator producing electricity at a higher frequency.
What are the indications and causes of overloades generator?
The speed and terminal voltage drastically reduces
Why speed of the induction motor falls when load is increased?
As the load increases, the speed reduces to deliver the increased torque required.
How does the helicopter fly up and down?
The main rotor speed is reduced or increased
How does the speed of the rotor affect the amount of lift?
The speed of the rotor directly affects the amount of lift generated by a rotorcraft. As the rotor spins faster, it creates more lift by generating greater airflow over the rotor blades, allowing the aircraft to climb or maintain altitude. Conversely, decreasing the rotor speed reduces lift, potentially causing the aircraft to descend.
Difference between induction motor and induction generator?
in case of induction motor the rotor speed is less than synchronous speed giving positive slip but in case of generator the rptor speed is greater than synchronous speed giving negative slip.......
How do you raise generator voltage?
A generator's terminal voltage can be raised by increasing the field current. This will result in an increased load on the generator, which will slow it down unless the governor kicks in to keep the generator at speed.
Why induction motor current increase when load increase?
The slip is proportional to the load torque in an induction motor. This can also be seen as a reduction in speed causing extra current to be induced in the rotor to supply the increased torque.
How does EGT and gas generator speed in a free power turbine with a constant speed propeller behave when power setting is increased?
As power setting is increased in a free power turbine with a constant speed propeller, EGT (exhaust gas temperature) will rise due to increased fuel flow and combustion in the engine. Gas generator speed will also increase to maintain power output and drive the propeller at a constant speed. The engine and propeller system will work together to balance power output and propeller speed.
Why current will reduces after motor runs in constant?
Because the slip angle between magnetic fields decreases as the rotor comes up to speed.
What happens if input to a generator is increased where it is synchronised to a powergrid whose Mw is fixed?
When input to generator increased when it is synchronised, speed of alternator get disturbed which inturn leads to the change in frequency,when frequency gets change synchronization is no long.
