Electrical Workshop 2: Circuit Protection
29 Questions
1 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What is the primary function of a control system?

  • To reduce the cost of the machine
  • To increase the efficiency of the machine
  • To provide protection for the operator and persons in the vicinity (correct)
  • To provide power to the machine

    • What is the main difference between a single-phase and a three-phase system?

  • The type of machine being powered
  • The number of lines required
  • The amount of power required (correct)
  • The type of electrical circuit used

    • What is the purpose of fuses and circuit breakers?

  • To protect the circuit from overloads (correct)
  • To increase the power of the machine
  • To reduce the cost of the machine
  • To provide protection for the operator

    • What is the name of the type of electrical circuit that requires only two lines?

    <p>Single-phase system</p> Signup and view all the answers

    What is the function of overload relays?

    <p>To protect the motor</p> Signup and view all the answers

    What are mechanical and electrical safeguards used for?

    <p>To protect the operator and persons in the vicinity</p> Signup and view all the answers

    What type of diagram is used to show the physical layout of components and their wire connections?

    <p>Wiring diagram</p> Signup and view all the answers

    What is the purpose of the M contacts in the holding circuit?

    <p>To keep the circuit energized when the start pushbutton is released</p> Signup and view all the answers

    What is shown in Figure 1, but not in the ladder diagram?

    <p>The physical location of the M contacts</p> Signup and view all the answers

    What is the purpose of the start-stop pushbutton station?

    <p>To start and stop the motor</p> Signup and view all the answers

    What is the term used to describe the circuit formed by the M contacts and the start pushbutton?

    <p>Holding circuit</p> Signup and view all the answers

    What type of installation is a wiring diagram commonly used in?

    <p>Motor control installations</p> Signup and view all the answers

    What is the primary focus of schematic diagrams?

    <p>Electrical sequence of components</p> Signup and view all the answers

    What state are schematics drawn to show components in?

    <p>De-energized or off state</p> Signup and view all the answers

    What happens to a normally open contact when its controlling coil energizes?

    <p>It closes</p> Signup and view all the answers

    What happens to the contacts controlled by a coil when it is de-energized?

    <p>They return to their normal state</p> Signup and view all the answers

    What determines which contacts are controlled by a coil?

    <p>Label or number of the coil and contact</p> Signup and view all the answers

    What is the consequence of the float switch closing?

    <p>The buzzer and warning light are connected in parallel</p> Signup and view all the answers

    What type of diagram is commonly used in educational materials?

    <p>Pictorial diagram</p> Signup and view all the answers

    What is the purpose of pictorial diagrams in motor control circuits?

    <p>To provide a detailed view of circuit components</p> Signup and view all the answers

    What style of diagram is the top part of the diagram in Figure below?

    <p>Connection diagram</p> Signup and view all the answers

    What is the purpose of ladder diagrams in motor control circuits?

    <p>To show the sequence of circuit operations</p> Signup and view all the answers

    What is the document number of the learning module ESW2 ELECTRICAL WORSHOP 2?

    <p>REF-OAP-INT-SSD</p> Signup and view all the answers

    What is the primary purpose of three-phase systems in industries?

    <p>To provide a large amount of power</p> Signup and view all the answers

    How many current-carrying conductors are used in a three-phase system?

    <p>Three</p> Signup and view all the answers

    What is the phase shift in the voltage and current waveforms between the three conductors?

    <p>120°</p> Signup and view all the answers

    What is the characteristic of a balanced three-phase load?

    <p>Its current values cancel each other out</p> Signup and view all the answers

    How are unbalanced three-phase loads mainly connected?

    <p>In Wye configuration</p> Signup and view all the answers

    What is always true about a motor in a three-phase circuit?

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

    More Like This

    Use Quizgecko on...
    Browser
    Open
    Browser
    Browser