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