Question 1: Low speed synchronous machines are often driven by which of the following turbines?
- hydro - turbines
- steam turbines
- Gas turbines
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BASIC
NEC 2023
Synchronous Generator Practice Questions
Free Online Practice quiz test on Synchronous Generator objective questions
TOPICS COVERED
Electrical Practice Questions
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This Synchronous Generator Practice Questions has 12 questions with detailed answers and NEC references. Take the full test, review every wrong answer, and look up the NEC article it references before moving on.
Tip: Work through Ohm's Law problems on paper — don't just read the answers, calculate them yourself.
- Topics covered: Voltage, current, resistance, Ohm's Law, series/parallel circuits, and electrical safety.
- Passing score: Aim for 90%+ on basic theory — these fundamentals underpin every advanced topic.
- Questions: 12 multiple-choice, one correct answer each
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TimeSynchronous Generator Practice Questions — Question List
Question 2: In rotating armature synchronous machines ..............
- The armature winding is on rotor and field winding is on stator
- The armature winding is on stator and field winding is on rotor
- Both armature and field winding is on stator
- Both armature and field winding is on rotor
Question 3: EMF method is used to measure ................... of synchronous Generator.
- voltage regulation
- induced EMF
- Terminal Voltage
- Short Circuit current
Question 4: Which of the following is the speed of the 2 pole 60 Hz synchronous machine?
- 3600 rpm
- 7200 rpm
- 1800 rpm
- 1000 rpm
Question 5: Which of the following turbines are most efficient at higher generator speed?
- Steam Turbines
- Water Turbines
- Gas Turbines
Question 6: In synchronous generator the terminal voltage .......................
- lags the current by 90 degrees
- leads the current by 90 degrees
- lags the current by 45 degrees
- leads the current by 45 degrees
Question 7: When an inductive load is added to synchronous generator , which following will be observed?
- The phase voltage will increase slightly
- The phase voltage will decrease slightly
- The phase voltage will be constant
Question 8: A synchronous generator with a no-load frequency of 62 Hz with a droop of 2MW/Hz connected to a 2MW load with a power factor of 0.8. What is the operating frequency of synchronous generator?
- 62 Hz
- 61 Hz
- 60 Hz
- 59 Hz
Question 9: The governor of a synchronous machine controls ..............
- Operating frequency of machine
- No -Load Frequency of the machine
- Operating voltage of the machine
- No-Load Voltage of the machine
Question 10: When the synchronous generator is connected to grid without proper synchronization, then ............................ will flow in the system.
- Very large current
- very large reactive power
- very large real power
- very large voltage
Question 11: In synchronization the frequency of the incoming machine must be slightly lower than running machine (system).
- True
- False
Question 12: The slip of a synchronous machine ranges between zero and unity.
- True
- False
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