- 1. Power systems refer to the complex network of generation, transmission, distribution, and utilization of electrical energy. They play a crucial role in supplying electricity to support modern societies and industries. Power plants, substations, transformers, and transmission lines are key components of power systems. The efficiency, reliability, and safety of power systems are paramount to ensure continuous and stable electricity supply. Advances in technology, such as smart grids and renewable energy integration, are transforming traditional power systems and paving the way for a sustainable and resilient energy future.
What is the main purpose of a power system?
A) To transmit and distribute electrical energy
B) To generate renewable energy
C) To store energy in batteries
D) To convert kinetic energy into electricity
- 2. Which component is responsible for converting mechanical energy into electrical energy in a power system?
A) Transformer
B) Inverter
C) Generator
D) Circuit breaker
- 3. What is the standard frequency used in most power systems around the world?
A) 100 Hz
B) 30 Hz
C) 50 Hz or 60 Hz
D) 70 Hz
- 4. What does AC stand for in AC power systems?
A) Alternating Current
B) Always Connected
C) Active Current
D) Artificial Current
- 5. In a power system, what is the purpose of a step-up transformer?
A) To convert AC to DC
B) To decrease voltage for household use
C) To regulate frequency
D) To increase voltage for long-distance transmission
- 6. What is the unit of electrical power?
A) Ampere
B) Volt
C) Watt
D) Ohm
- 7. What type of fault occurs when two or more conductors accidentally come into contact?
A) Ground Fault
B) Overload
C) Short Circuit
D) Open Circuit
- 8. Which type of power system enables two-way flow of electricity and information?
A) Islanded System
B) Smart Grid
C) Grid-tied System
D) Microgrid
- 9. What type of power is expressed by the product of voltage and current in a circuit?
A) Real Power
B) Apparent Power
C) Complex Power
D) Reactive Power
- 10. What is the primary function of a switchgear in a power system?
A) To regulate frequency
B) To generate electricity
C) To store energy
D) To control, protect, and isolate electrical equipment
- 11. Which device is commonly used in power systems to change the voltage levels for transmission?
A) Transformer
B) Inverter
C) Generator
D) Circuit breaker
- 12. What is the SI unit of electrical resistance?
A) Ampere
B) Volt
C) Watt
D) Ohm
- 13. In power systems, what do transmission lines primarily carry?
A) Water
B) Natural gas
C) Internet data
D) Electricity
- 14. Which type of power system operates independently from the main power grid?
A) Microgrid
B) Smart Grid
C) Grid-tied System
D) Islanded System
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