Задание 1. Вставьте пропущенные буквы в слова то теме:
el_ctroma_netic
rot_ting
_ltern_ting
electr_c_l
h_gh
m_gneti_
bas_c
m_chin_
c_rre_t
f_eld
p_rt
volt_ge
w_res
ind_c_ion
ener_y
c_il
ins_lat_d
cond_cti_g
pr_n_iple
c_nv
Задание 2. Дайте русский эквивалент следующих слов по теме «Трансформаторы»:
iron core closed core
input voltage
output voltage
primary winding
secondary winding
step-up transformer
step-down transformer
Задание 3. Закончите предложения используя слово while:
1. Тhе secondary winding of а transformer is connected to the load resistance
2. Тhe primary winding receives energy ….
3. А step-down transformer decreases the primary voltage
4. Ап air core transformer is used for high-frequency currents ...
5. In а step-up transformer the number of turns of the secondary winding is greater than the number
of tums of the primary winding ... ...
Задание 4. Переведите текст и ответьте на во после него:
Current Transformers
Current transformers arе used for operating ammeters, wattmeters and other measuring
devices. Тhey produce in the meters, а current lower than the measured current but proportional
to it. Current transformers also insulate the instrument from the circuit which is being measured.
Тhis is necessary for high voltage circuits.
1. What is а current transformer used for?
2. What type о! current does it produce?
Задание 5. ответьте на во

kot292    3   29.04.2020 21:11    4