Power Generation, Operation, And Control: Quiz!

80 Questions | Total Attempts: 309

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Power Generation, Operation, And Control: Quiz!

The world today runs on electricity and machines. There is an increased demand for power, which has also led to rising in different sources. Some of the sources are good for the environment, whereas others are not. Take this trivia quiz and see what you know about power generation, operation, and control in the world today. All the best!


Questions and Answers
  • 1. 
    A combined-cycle generator has a heat rate of
    • A. 

      7000

    • B. 

      9000

    • C. 

      12500

    • D. 

      14000

  • 2. 
    Inadvertent interchange is the difference between the net actual interchange and net scheduled interchange.
    • A. 

      True

    • B. 

      False

  • 3. 
    Inadvertent interchange is the difference between forecast and actual energy interchanged.
    • A. 

      True

    • B. 

      False

  • 4. 
    Systems are operating in Parallel. System A schedules 100MW into B. B does not reduce generation as A schedules, What happens?
    • A. 

      Frequency in B increases

    • B. 

      Voltage in A Goes down

    • C. 

      Voltage in B Goes up

    • D. 

      Frequency in A increases

  • 5. 
    Ln power system stability, the use of the equal-area criterion involves
    • A. 

      Power vs time

    • B. 

      Power vs power angle

    • C. 

      Time vs.power angle

    • D. 

      Power Angle

    • E. 

      Machine angle vs.time

  • 6. 
    The angle between the source and the load voltages of a transmission system is called
    • A. 

      Power angle

    • B. 

      Phase angle

    • C. 

      Transmission angle

    • D. 

      Load angle

  • 7. 
    Power flows between interconnected system from a _____
    • A. 

      Leading power angle

    • B. 

      Lagging power angle

    • C. 

      Higher voltage to the lower voltage

    • D. 

      Lower voltage to higher voltage

  • 8. 
    Maximum power flows when the power transfer angle is zero.
    • A. 

      True

    • B. 

      False

  • 9. 
    Which is a way of increasing real power flow:
    • A. 

      Changing the phase angle with phase-shifting transformers

    • B. 

      Changing generation patterns relative to the line terminals

    • C. 

      Changing the impedance of the line with series capacitors

    • D. 

      All of the above

  • 10. 
    In interconnected systems power flows from the system with the:
    • A. 

      Greater leading power angle

    • B. 

      Greater System voltage

    • C. 

      Lesser leading power angle

    • D. 

      Lesser system voltage

  • 11. 
    What is common between demand factor and diversity factor?
    • A. 

      Maximum demand

    • B. 

      Peak load

    • C. 

      Connected load

  • 12. 
    The Department's heart rate for the newly combined cycle in BTU is:
    • A. 

      7000

    • B. 

      9000

    • C. 

      11500

    • D. 

      14000

  • 13. 
    What is automated using the automatic controls of power stations?
    • A. 

      Full control of the station

    • B. 

      The emergency protection system

    • C. 

      All of the above

  • 14. 
    LADWP'S average load is:
    • A. 

      3500

    • B. 

      4000

    • C. 

      4250

    • D. 

      4500

  • 15. 
    Spinning reserve is an unloaded generation which is synchronized and capable of serving additional demand in ___ minutes.
    • A. 

      5

    • B. 

      10

    • C. 

      15

    • D. 

      20

  • 16. 
    The departments operating reserve is:
    • A. 

      30% of load

    • B. 

      5% of capacity plus regulation

    • C. 

      30% of capacity

    • D. 

      Single failure contingency plus regulation

  • 17. 
    Which type of reliability indices is for momentary interruptions?
    • A. 

      SAIFI

    • B. 

      SAIDI

    • C. 

      CAIDI

    • D. 

      MAIFI

  • 18. 
    Maximum power flows when the power transfer angle is____
    • A. 

      90

    • B. 

      30

    • C. 

      45

    • D. 

      0

  • 19. 
    They cancel some of the inductive reactance of a line, therefore, decreasing impedance. This enables more real power to flow. They are used primarily to improve system stability.
    • A. 

      Shunt Reactors

    • B. 

      Shunt Capacitors

    • C. 

      Series Capacitors

  • 20. 
    During light loads, the capacitive charging current may cause the excessive voltage at the receiving end of a transmission line. These are switched in and out of service to absorb excess VARS during lightly loaded periods.
    • A. 

      Shunt Reactors

    • B. 

      Shunt Capacitors

    • C. 

      Series Capacitors

  • 21. 
    Switching these into service compensates for this effect by adding Var load to the system. They are also attached to the tertiary windings of a transformer bank. 
    • A. 

      Shunt Reactors

    • B. 

      Shunt Capacitors

    • C. 

      Series Capacitors

  • 22. 
    If a line is heavily loaded, the inductive Var losses may cause the insufficient voltage at the receiving end of a transmission line. These compensate for this effect. In the morning when customer loads are increasing they are swithced into service to supplies VARS. 
    • A. 

      Shunt Reactors

    • B. 

      Shunt Capacitors

    • C. 

      Series Capacitors

  • 23. 
    Turning these on adds voltage to the system, and therefore they are placed as close to the load as practical.
    • A. 

      Shunt Reactors

    • B. 

      Shunt Capacitors

    • C. 

      Series Capacitors

  • 24. 
    Responds only to frequency changes. It does not respond to power flow changes on tie lines. This mode is used only on an isolated system since it could lead to overloading ties lines while correcting frequency in all interconnected systems.
    • A. 

      Area line bias

    • B. 

      Tie line bias with frequency control (Tie line bias control)

    • C. 

      Flat line bias (Flat tie line control)

    • D. 

      Frequency line bias (Flat frequency control)

  • 25. 
    It uses frequency and tie-line power flow to calculate ACE. A more descriptive term for this control mode is a constant net interchange with frequency bias.
    • A. 

      Area line bias

    • B. 

      Tie line bias with frequency control (Tie line bias control)

    • C. 

      Flatline bias (Flat tie line control)

    • D. 

      Frequency line bias (Flat frequency control)

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