- 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 store energy in batteries
C) To convert kinetic energy into electricity
D) To generate renewable energy
- 2. Which component is responsible for converting mechanical energy into electrical energy in a power system?
A) Circuit breaker
B) Generator
C) Transformer
D) Inverter
- 3. What is the standard frequency used in most power systems around the world?
A) 30 Hz
B) 70 Hz
C) 100 Hz
D) 50 Hz or 60 Hz
- 4. What does AC stand for in AC power systems?
A) Always Connected
B) Alternating Current
C) Active Current
D) Artificial Current
- 5. In a power system, what is the purpose of a step-up transformer?
A) To regulate frequency
B) To decrease voltage for household use
C) To increase voltage for long-distance transmission
D) To convert AC to DC
- 6. What is the unit of electrical power?
A) Volt
B) Ohm
C) Watt
D) Ampere
- 7. In power systems, what do transmission lines primarily carry?
A) Natural gas
B) Water
C) Internet data
D) Electricity
- 8. Which device is commonly used in power systems to change the voltage levels for transmission?
A) Inverter
B) Transformer
C) Circuit breaker
D) Generator
- 9. What is the SI unit of electrical resistance?
A) Ohm
B) Watt
C) Ampere
D) Volt
- 10. Which type of power system operates independently from the main power grid?
A) Islanded System
B) Microgrid
C) Smart Grid
D) Grid-tied System
- 11. What is the primary function of a switchgear in a power system?
A) To generate electricity
B) To control, protect, and isolate electrical equipment
C) To regulate frequency
D) To store energy
- 12. What type of fault occurs when two or more conductors accidentally come into contact?
A) Open Circuit
B) Short Circuit
C) Overload
D) Ground Fault
- 13. Which type of power system enables two-way flow of electricity and information?
A) Smart Grid
B) Microgrid
C) Grid-tied System
D) Islanded System
- 14. What type of power is expressed by the product of voltage and current in a circuit?
A) Apparent Power
B) Real Power
C) Reactive Power
D) Complex Power
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