200+ câu Trắc nghiệm Tiếng Anh chuyên ngành kỹ thuật điện có đáp án - Phần 3

Generators provide nearly all of the ………. for electric power grids.

A current of 5 A flows through a conductor and 10 W dissipated. What voltage exists across the ends of the conductor?

Calculate the capacitive reactance value of a 220nF capacitor at a frequency of 1kHz.

An electrical substation plays an important role in the electrical system as it acts as a bridge in transferring the electricity from the power plant to......

“The sum of I one, I two, and I three equals I four” is the full expression of

The consumer in the ....... electrical distribution system will be in darkness if feeder or transformer are failured.

What are the norminal voltages of the transmission system in Vietnam?

Ring network is fed by more than one..........

What is the power factor? (hệ số công suất là gì?)

The unit of chargeis

Which one is the classic energysources used in electrical power generation.

The unit of the reactive poweris

The most common conductor in use for transmission today is ..........

........... is a device designed to detect the faults in the power system.

Ohmis the unit of

Earth ....... at a substation can cause a ground potential rise

Power grid includes particular installations, substations, lines or cables for transmittingand …… of electricity.

Câu 12 :Ampereis the unit of

one kilowatt hour of electrical energy is the same as……..

Generation of electricity is a process whereby electrical energy is obtained from other form of ......

One of the fuctions of a substation is to? (chức năng của trạm biến áp)

The instantaneous values of a sinusoidal waveform is given by the formula :

Write out R 2 + 15Ω = R 1 in full

Substations may be owned by a large industrialor ....... customer.

A substation is a part of an electrical ......., transmission,and distributionsystem.