III. Translate the following sentences into your native language.
1. Electric current is considered to flow from a point of negative potential to a point of positive potential.
2. Poly-phase currents are produced by generators having two or more sets of windings.
3. A two-pole generator produces one cycle in making one complete turn.
4. A four-pole generator produces two cycles or 720 electrical degrees in making one complete turn.
5. In a four-pole generator, electrical degrees have twice the value of degrees of revolution.
6. Power is generally produced and transmitted in three-phase systems because they are best adapted to motors and involve the least expensive power lines.
7. The transistor is a current-operated device, whereas the vacuum tube is a voltage-operated device.
8. The signal can be amplified, recorded or modified by an electric circuit.
9. The rotor of a steam turbine consists of many-bladed fanlike wheels.
10. The transformer grew out of the experiment of Faraday.
Dostları ilə paylaş: |