Vocabulary

gramme-ring winding – грамм-кольцевая обмотка

to be several electrical degrees apart – быть смещенным на несколько электрических градусов

for purely local use – только для местного использования

merely – только

to lie in slots – укладывать в пазы

form-wound – с шаблонной обмоткой

lap-wound – с петлевой обмоткой

wave-wound – с волновой обмоткой

pronounced advantages – явные преимущества

5. Make up word combinations. Translate them and find them in the text.

Generated poles

Slip surface

gramme-ring insulation

connection field

three- phase force

local alterna­tor

radical proportional

stationary in series

inner voltage

pronounced reluctance

rotating change

high-voltage gen­erator

centrifugal rings

slower advantages

polyphase winding

adjacent conductors

connected points

directly use

6. Check your comprehension of the text by finding the right variant of questions:

1. The generated voltage is amplified and then appears across the brushes by means of _____

a) the commutator b) the amplifier c) the brushes

2. The number of brushes can differ depending on the number of _____and the connection points on the armature.

a) sliding contacts b) drum windings c) slip rings

3. Voltage is induced in stationary conductors by rotating _____.

a) a magnetic field b) an armature c) a shaft

4. The sides of each coil lie in slots under _____.

a) field poles b) opposite poles c) adjacent poles

5. A wave winding on an alternator will produce _____voltage as a lap winding having the same number of coils.

a) higher b) the same c) lower

6. Only _____ slip rings are required to provide direct current in the rotating field, while at least _____ would be required for a rotating armature. Since

a) two, three b) three, two c) one, three

7. As more armature copper is required for greater capacity, deeper _____ are also required.

a) winding b) rings c) slots

8. The number of _____, or frequency, is directly proportional to the speed of the rotor.

a) cycle per second b) revolution per minute c) net voltage per coil

9. Coils of the same phase are usually connected _____ in order to obtain the high voltages generated.

a) in shunt b) in parallel c) in series