DC Machines and Transformers Quiz
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Questions and Answers

In a series DC motor, what is the relationship between torque and armature current?

  • T ∝ √Ia
  • T ∝ Ia^2 (correct)
  • T ∝ 1/Ia
  • T ∝ Ia

    • What type of applications are series DC motors suitable for?

  • Low starting torque
  • Constant speed operations
  • High starting torque and heavy torque overloads (correct)
  • Low power consumption

    • In a compound DC motor, what happens to the speed when there is an increase in the strength of the series field?

  • The speed increases (correct)
  • The speed decreases
  • The speed fluctuates
  • The speed remains constant

    • What is the relationship between voltage, speed, and flux in a DC motor?

    <p>V ∝ ωm ∝ Φ</p> Signup and view all the answers

    How does the no-load speed of a shunt DC motor vary with the strength of the shunt field?

    <p>No effect on speed</p> Signup and view all the answers

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