Выписать из текста предложения в пасивной форме, определить время
ALTERNATING CURRENT
Alternating current (AC) is an electric current which periodically reverses
direction, in contrast to direct current (DC) which flows only in one direction.
Alternating current is the form in which electric power is delivered to businesses
and residences, and it is the form of electrical energy that consumers typically use
when they plug kitchen appliances, televisions and electric lamps into a wall
socket. A common source of DC power is a battery cell in a flashlight. The
abbreviations AC and DC are often used to mean simply alternating and direct, as
when they modify current or voltage.
Тhe number of cycles per second is the frequency of an alternating current.
Тhere are two frequencies: the standard for Europe is 50 cycles per second while
the standard for the USA is 60 cycles per second. А standard frequency has а great
advantage since different systems сan bе interconnected.
Выписать из текста предложения в пасивной форме, определить время
Объяснение:
Выписать из текста предложения в пасивной форме, определить время
ALTERNATING CURRENT
Alternating current (AC) is an electric current which periodically reverses
direction, in contrast to direct current (DC) which flows only in one direction.
Alternating current is the form in which electric power is delivered to businesses
and residences, and it is the form of electrical energy that consumers typically use
when they plug kitchen appliances, televisions and electric lamps into a wall
socket. A common source of DC power is a battery cell in a flashlight. The
abbreviations AC and DC are often used to mean simply alternating and direct, as
when they modify current or voltage.
Тhe number of cycles per second is the frequency of an alternating current.
Тhere are two frequencies: the standard for Europe is 50 cycles per second while
the standard for the USA is 60 cycles per second. А standard frequency has а great
advantage since different systems сan bе interconnected.
Выписать из текста предложения в пасивной форме, определить время
Объяснение:
We weren’t very hungry but we were cold. While we were walking with my umbrella, we found a coin. It was not a normal coin, it was a strange coin. We did not continue walking. We were a bit nervous. What should we do? Maybe, we had to put the coin where we had found it. We did this. We were walking on the street, when a tall man asked us for the coin. We told him that the coin were at the beginning of the street. We knew what happened, so we continued walking.