Synchronous Motors Hunting Quiz
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Questions and Answers

What is hunting in a synchronous motor?

  • Oscillation of the rotor about its steady state position (correct)
  • Sudden stoppage of the rotor
  • Steady rotation of the rotor
  • Increase in the electromagnetic torque
  • What is the condition of equilibrium in a synchronous motor?

  • When the rotor is stationary
  • When the load torque is zero
  • When the rotor speed is maximum
  • When the electromagnetic torque developed is equal and opposite to the load torque (correct)
  • What happens to the rotor speed when there is a sudden increase in the load torque of a synchronous motor?

  • The equilibrium of the motor is disturbed and the speed changes (correct)
  • The rotor speed increases
  • The rotor speed decreases
  • The rotor speed remains constant
  • What does the difference torque $( au_{e}- au_{l})$ represent in the synchronous motor equation?

    <p>The change in speed of the motor</p> Signup and view all the answers

    What does a constant value of torque angle (δ) indicate in a synchronous motor?

    <p>The rotor of the synchronous motor runs at synchronous speed</p> Signup and view all the answers

    What is hunting in a synchronous motor?

    <p>Oscillation of the rotor about its steady state position</p> Signup and view all the answers

    What does the condition of equilibrium in a synchronous motor refer to?

    <p>When the electromagnetic torque developed is equal and opposite to the load torque</p> Signup and view all the answers

    What does the difference torque $( au_{e}- au_{l})$ represent in the synchronous motor equation?

    <p>The torque difference causing a change in the motor speed</p> Signup and view all the answers

    What does a constant value of torque angle (δ) indicate in a synchronous motor?

    <p>The phase relationship between the stator and rotor magnetic fields</p> Signup and view all the answers

    What happens to the rotor speed when there is a sudden increase in the load torque of a synchronous motor?

    <p>The rotor speed decreases due to the difference torque</p> Signup and view all the answers

    What is hunting in a synchronous motor?

    <p>Oscillation of the rotor about its steady state position</p> Signup and view all the answers

    What is the condition known as 'steady state condition' in a synchronous motor?

    <p>When the electromagnetic torque developed is equal and opposite to the load torque</p> Signup and view all the answers

    What happens to the equilibrium of a synchronous motor when there is a sudden change in the load torque?

    <p>It is disturbed</p> Signup and view all the answers

    What does the difference torque $( au_{e}- au_{l})$ represent in a synchronous motor?

    <p>The change in speed of the motor</p> Signup and view all the answers

    What is the effect of a sudden increase in the load torque of a synchronous motor?

    <p>It changes the speed of the motor</p> Signup and view all the answers

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