Power System MCQs (Part-12)

What is the primary function of a power plant?

A Store energy for future use
B Convert primary energy sources into electrical energy
C Distribute electricity to consumers
D Control voltage regulation in the grid

What is the purpose of a step-up transformer in a power system?

A Increase current levels
B Increase voltage for efficient power transmission
C Decrease voltage levels
D Store electrical energy

What is the significance of reactive power in power systems?

A Perform useful work
B Maintain voltage stability and support inductive loads
C Reduce transmission efficiency
D Store electrical energy

What is load flow analysis in power systems?

A Calculation of fault currents
B Determining voltage, current, and power flow in the system
C Analyzing frequency stability
D Designing renewable energy systems

What is the purpose of switchgear in a power system?

A Generate electricity
B Protect electrical circuits from faults
C Measure energy usage
D Monitor power quality

What is a blackout in power systems?

A A temporary reduction in voltage
B A complete power outage in a region
C A planned power shutdown for maintenance
D An increase in power demand

What does SCADA stand for?

A Smart Control and Data Analysis
B Supervisory Control and Data Acquisition
C Substation Control and Distribution Automation
D System Coordination and Device Allocation

What is a smart grid?

A A grid that operates only on renewable energy
B A power grid with advanced communication and automation technologies
C A grid designed for fossil fuel power plants
D A grid that eliminates reactive power

What is economic load dispatch?

A Balancing voltage levels across the grid
B Allocating generation to minimize costs while meeting demand
C Controlling power quality issues
D Increasing reactive power in the system

What is the purpose of power factor correction?

A Increase system frequency
B Reduce reactive power and improve efficiency
C Eliminate voltage fluctuations
D Store electrical energy

What is grid resilience?

A The grid’s ability to increase frequency during demand fluctuations
B The grid’s ability to recover quickly from disturbances or outages
C The grid’s dependency on renewable energy
D The grid’s efficiency in reducing peak loads

What is the purpose of a relay in a protection system?

A Store electrical energy
B Detect and isolate faults in the system
C Measure system efficiency
D Regulate voltage levels

What is a microgrid?

A A large-scale grid operating across multiple regions
B A localized grid that can operate independently or with the main grid
C A grid exclusively for renewable energy sources
D A temporary power backup system

What is system redundancy in power systems?

A Eliminating backup equipment to reduce costs
B Ensuring reliability by providing backup systems
C Increasing power factor
D Reducing voltage levels in the grid

What is the purpose of power factor correction?

A Increase system frequency
B Reduce reactive power and improve efficiency
C Eliminate voltage fluctuations
D Store electrical energy

What is grid resilience?

A The grid’s ability to increase frequency during demand fluctuations
B The grid’s ability to recover quickly from disturbances or outages
C The grid’s dependency on renewable energy
D The grid’s efficiency in reducing peak loads

What is the primary role of reactive power in a power system?

A Perform useful work
B Maintain voltage stability and support inductive loads
C Reduce transmission efficiency
D Store electrical energy

What is a blackout in power systems?

A A temporary reduction in voltage
B A complete power outage in a region
C A planned power shutdown for maintenance
D An increase in power demand

What is load forecasting used for in power systems?

A Measuring real-time electricity demand
B Predicting future electricity demand for optimal grid planning
C Reducing the load on renewable energy systems
D Monitoring voltage fluctuations in the grid

What is a microgrid?

A A large-scale grid operating across multiple regions
B A localized grid that can operate independently or with the main grid
C A grid exclusively for renewable energy sources
D A temporary power backup system