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WorksheetsPower Factor Correction Quiz
Total questions: 15
Worksheet time: 8mins
What is the definition of power factor?
The ratio of active power to apparent power
The ratio of active power to reactive power
The percentage of electricity wasted
The total power delivered by the utility company
What does a power factor of 0.72 indicate?
72% of power is used for useful work
72% efficiency in the system
72% of power is wasted
72% of reactive power is consumed
What type of power does reactive power generate?
Useful work
Magnetic fields
Electricity
Heat
What is the typical uncorrected industrial power factor?
1.0
0.95
0.8
0.9
What happens if the power factor is not corrected?
Increased efficiency
Reduced current flow
Increased capital expenditure
Lower electricity bills
What is one disadvantage of a low power factor?
Reduced load handling capability
Increased voltage regulation
Lower maximum demand charges
Improved power quality
What component is used in an automatic power factor correction system?
Resistors
Inductive coils
Capacitor banks
Transformers
What is the purpose of a reactive power control relay?
To increase current flow
To manage reactive power
To control voltage levels
To measure active power
What is one benefit of using a power factor correction unit for end users?
Increased voltage flickering
Reduction in electric bill
Higher system losses
Increased reactive power demand
How often should the cleanliness of the power factor correction equipment be checked?
Once every six months
Once a month
Every week
Once a year
What should be done before accessing the terminals of the capacitors?
Wait 5 minutes
Disconnect the power supply
Short-circuit the terminals
Wait 10 minutes
What is the effect of a power factor of 0.7 on current consumption?
Requires less current
Requires the same current
Requires more current
Requires half the current
What is the main purpose of power factor correction?
To reduce voltage
To improve efficiency
To increase reactive power
To increase current
What should be controlled every six months in the maintenance of PF correction systems?
Capacitor charge
Air filter cleanliness
Surface condition
Ambient temperature
What is the main advantage of improving the power factor of an installation?
It allows for the use of smaller transformers.
It requires more frequent maintenance.
It reduces the efficiency of the installation.
It reduces the efficiency of the installation.
