Actuators Overview Lecture 7

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Questions and Answers

What is the function of an actuator in a machine?

  • To convert mechanical energy into electrical energy
  • To open a valve (correct)
  • To control a hydraulic power system
  • To generate electrical energy

Which type of actuator uses compressed air to move a load along a linear path?

  • Electric actuator
  • Magnetic actuator
  • Hydraulic actuator
  • Pneumatic actuator (correct)

What type of energy does an electric actuator use to actuate a mechanical system?

  • Compressed air energy
  • Hydraulic energy
  • Electrical energy (correct)
  • Mechanical energy

Which type of DC motor uses permanent magnets to create field flux?

<p>Permanent Magnet DC Motor (B)</p>
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What is one of the advantages of a Permanent Magnet DC Motor?

<p>Works at a constant speed (D)</p>
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What type of energy does a hydraulic actuator use to facilitate mechanical operation?

<p>Hydraulic power (B)</p>
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Which type of actuator uses compressed air acting on a piston inside a cylinder to move a load along a linear path?

<p>Pneumatic actuator (D)</p>
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What is the main advantage of a series DC motor?

<p>Large amount of starting torque (C)</p>
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Which type of DC motor generates a large amount of starting torque but cannot regulate speed?

<p>Series DC Motor (A)</p>
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What type of actuator uses electrical energy to actuate a mechanical system using magnetic field?

<p>Electric actuator (C)</p>
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