The working principle of a DC machine is when electric current flows through a coil within a magnetic field, and then the magnetic force generates a torque that rotates the dc motor. The DC machines are classified into two types such as DC generator as well as DC motor.
Answer:
both technologies offer a cleaner alternative to internal combustion engines, and both use electric motors powered by electrochemical device.
Explanation:
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Answer: i think it can be good and bad it depends. i consider it art sometimes. I think eco-art should gain popularity but i think when it dose it will be slow.
Explanation:
Answer:
b)false
Explanation:
As we know that
Volume flow rate Q
Q = A x V
For constant volume flow rate,if velocity will increase then automatically area will decrease and vice versa.
Generally nozzle are used to increase the velocity and diffuser are used to decrease the exit velocity of flow.
So by increasing the cross sectional area of the restriction ,the velocity of the flow will decrease.