200+ câu Trắc nghiệm Tiếng Anh chuyên ngành kỹ thuật điện có đáp án - Phần 2
25 câu hỏi
A source c.m.f of 5V provides a current of 5A for Iminute. How much energy is provided in this time?
250J
150J
1.5kJ
25J
Chọn đáp án C
A resistance of 5k ohm has a conductance of?
25
0.2kS
0.2mS
2mS
Chọn đáp án C
A conductor has a resistance of 10 2. It's conductance is:
0.1 S
10 S
0.1 mS
1S
Chọn đáp án A
What is the unit of electromotive force?( sức điện động)
Coulomb
Volt
Ohm
Ampere
Chọn đáp án B
What does the "potential difference" mean? (dịnh nghĩa của hiệu điện thế?)
A change in resistance between two points in an electric circuit.
A change in power between two points in an electric circuit.
A change in electric current between two points in an electric circuit.
A change in electric potential between two points in an electric circuit.
Chọn đáp án D
What is the power factor? (hệ số công suất là gì?)
The ratio of apparent power to reactive power.
The ratio of apparent power to active power.
The ratio of reactive power to apparent power.
The ratio of active power to apparent power.
Chọn đáp án D
Cân 10 What is the unit of mutual inductance? (Điện cảm)
Farad
Siemens
Ohm
Henry
Chọn đáp án D
What is the rated frequency of Vietnam electric power system?
32 GW
400 V
500 kV
50 Hz
Chọn đáp án D
Câu12:A substation is a part of an electrical ........, transmission, and distribution system
generator
generating
generation
power plant
Chọn đáp án C
Power grid Includes particular installations, substations, lines or cables for transmitting and ...... of electricity.
generating (phát ra)
distribution (sự phân phối)
distributing (phân phối)
generation (sự phát ra)
Chọn đáp án B
An electric grid or power grid is interconnected network for electricity from producers to consumers.
generating (phát điện)
changing (biến đổi điện)
delivering (cung cấp điện)
consuming (tiêu thụ điện)
Chọn đáp án C
Which equipment is used to produce electricity? (thiết bị dùng để sản xuất điện)
A transformer
A motor
A cable
A generator (máy phát điện)
Chọn đáp án D
.....convert the energy stored in the fuel (mainly coal, oil, natural gas, enriched uranium) or renewable energies (water, wind, solar) into electric energy.
Transformers
Consumers
Substations
Power plants
Chọn đáp án D
Cogenerators are facilities that utilize heat for electricity and for....another form of useful thermal energy (steam or hot water).
Distributing
maintaining
consuming
generating
Chọn đáp án D
Conventional generators produce electricity at a....that is a multiple of the rotation speed of the machine
power
voltage
current
frequency
Chọn đáp án D
Where electricity is generated?
In transmission lines
In transmission substations
In distribution substations
ln power plants
Chọn đáp án D
What are the norminal voltages of the transmission system in Vietnam?
22 kV, 35 kV
6kV, 10 kV
220 V, 380 V
220 kV, 500 kV
Chọn đáp án D
Generation, transmission and distribution system are parts of .....
a consumer
a power plant
a substation
an electric power system
Chọn đáp án D
What is the electric power system?
Lines and transformers
Transmisstion systems
Loads
A very large network that links power plants to loads
Chọn đáp án D
Generators provide nearly all of the....for electric power grids.
frequency
current
voltage
power
Chọn đáp án C
Generation of electricity is a process whereby electrical energy is obtained from other form of ......
Oil
Fuel
Energy
Water
Chọn đáp án A
Generation of form of energy. is a process whereby electrical energy is obtained from some other
heat
fuel
electricity
steam
Chọn đáp án A
A battery of e.m.f of 12 V supplies a current of 10 A for 6 minutes. How much energy is supplied in this time?
12 VAh
720 VAh
7200 VAh
20 VAh
Chọn đáp án A
A current of 5 A flows through a a conductor and 10 W dissipated. What voltage exists across the ends of the conductor?
2V
50 V
0,5 V
0.2 V
Chọn đáp án A
A conductor has a conductance of 0.1 S. It's resistance is:
10Ω
1Ω
0.1 Ω
1mΩ
Chọn đáp án A
