- 1. Power engineering is a branch of engineering that deals with the generation, distribution, and transmission of electrical power. It encompasses a wide range of technologies and disciplines related to power generation plants, electrical grids, renewable energy sources, and energy efficiency. Power engineers work on designing, installing, and maintaining systems that generate and distribute electricity efficiently and safely. They are responsible for developing innovative solutions to meet the increasing demand for electricity while also addressing environmental concerns. Power engineering plays a crucial role in ensuring a reliable and stable supply of power to industries, businesses, and households around the world.
Which type of power plant relies on the combustion of fossil fuels to generate electricity?
A) Solar power plant
B) Thermal power plant
C) Wind power plant
D) Hydroelectric power plant
- 2. Which power plant generates electricity by harnessing the energy of moving water?
A) Geothermal power plant
B) Nuclear power plant
C) Biomass power plant
D) Hydroelectric power plant
- 3. What is the purpose of a capacitor in an electrical circuit?
A) Store and release electrical energy
B) Generate electrical power
C) Convert AC to DC power
D) Regulate voltage levels
- 4. Which type of power plant uses the heat from the Earth's core to generate electricity?
A) Wind power plant
B) Solar power plant
C) Hydroelectric power plant
D) Geothermal power plant
- 5. What is the purpose of a governor in a turbine system?
A) Control the speed of the turbine
B) Store electrical energy
C) Regulate voltage levels
D) Convert mechanical energy into electrical energy
- 6. Which type of power plant uses the sun's energy to generate electricity?
A) Hydroelectric power plant
B) Thermal power plant
C) Solar power plant
D) Geothermal power plant
- 7. Which component of a power system protects the system from lightning strikes and power surges?
A) Surge arrester
B) Fuse
C) Insulator
D) Relay
- 8. Which component of a power system is responsible for disconnecting a faulty section of the network during faults?
A) Generator
B) Circuit breaker
C) Capacitor
D) Transformer
- 9. What is the purpose of an isolator switch in a power system?
A) Generate electrical power
B) Regulate voltage levels
C) Isolate electrical equipment for maintenance
D) Control frequency
- 10. Which instrument is used to measure electrical current in a circuit?
A) Voltmeter
B) Ohmmeter
C) Ammeter
D) Wattmeter
- 11. What is the typical frequency of electrical power in most regions of the world?
A) 200 Hz
B) 50 or 60 Hz
C) 10 Hz
D) 100 Hz
- 12. Which type of power plant uses the heat generated by the decay of radioactive materials to produce electricity?
A) Solar power plant
B) Nuclear power plant
C) Thermal power plant
D) Wind power plant
- 13. What is the purpose of a rectifier in a power system?
A) Store electrical energy
B) Convert AC to DC power
C) Regulate frequency
D) Generate electrical power
- 14. Which of the following is NOT considered a renewable energy source in power engineering?
A) Wind
B) Coal
C) Hydro
D) Solar
- 15. What is the unit of electrical power?
A) Ohm
B) Watt
C) Volt
D) Ampere
- 16. Which component in a gas turbine power plant compresses the air before combustion?
A) Ignitor
B) Turbine
C) Generator
D) Compressor
- 17. Which law states that the total electric flux through a closed surface is proportional to the total charge enclosed by the surface?
A) Gauss's Law
B) Ohm's Law
C) Faraday's Law
D) Ampere's Law
- 18. What is the SI unit of electrical potential difference or electromotive force?
A) Ohm
B) Ampere
C) Watt
D) Volt
- 19. What is the term for the ability of a material to carry an electric current?
A) Conductivity
B) Resistance
C) Impedance
D) Reactance
- 20. What is the process of converting mechanical energy into electrical energy in a generator called?
A) Convection
B) Radiation
C) Turbine Operation
D) Electromagnetic Induction
- 21. Which law states that the induced electromotive force in any closed circuit is equal to the time rate of change of the magnetic flux through the circuit?
A) Gauss's Law
B) Ampere's Law
C) Ohm's Law
D) Faraday's Law
- 22. What is the law that states that the total current entering a junction is equal to the total current leaving the junction?
A) Ohm's Law
B) Newton's Law
C) Kirchhoff's Current Law
D) Gauss's Law
- 23. What is the term for the continuous flow of electric charge in a circuit?
A) Voltage
B) Current
C) Resistance
D) Power
- 24. Which of the following is the most common fuel used in gas turbine power plants?
A) Coal
B) Diesel
C) Nuclear
D) Natural gas
- 25. What is the unit of electrical resistance?
A) Watt
B) Ampere
C) Volt
D) Ohm
- 26. What device is commonly used to step up or step down voltages in power systems?
A) Transformer
B) Capacitor
C) Generator
D) Rectifier
- 27. The unit 'VA' in power engineering stands for:
A) Voltage-Alter
B) Volt-Ampere
C) Variable Amperage
D) Volt-Ampere Hour
- 28. Which component in a power system is used to store electrical energy?
A) Fuse
B) Resistor
C) Motor
D) Battery
- 29. What is the SI unit of energy and work in power engineering?
A) Hertz
B) Watt
C) Newton
D) Joule
- 30. What does the term 'brownout' refer to in power systems?
A) Sudden surge in current
B) Power outage in a specific area
C) Loss of power generation
D) Drop in voltage supply
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