Trade Theory Quiz
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Questions and Answers

What is essential to receive communication by Email besides a computer and internet connection?

  • Web browser
  • Email account (correct)
  • Social media account
  • Mobile phone

    • Which of the following skills is necessary for career growth and sustainability?

  • Networking
  • Building new skills (correct)
  • Public speaking
  • Time management

    • What concept describes the belief in one's capability to achieve dreams?

  • Self esteem
  • Self confidence
  • Self belief (correct)
  • Self motivation

    • What is the main purpose of using emojis in communication?

    <p>When words are insufficient</p> Signup and view all the answers

    What is defined as doing business in a way that does not harm the environment or community?

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

    What percentage do words account for in face-to-face communication?

    <p>7%</p> Signup and view all the answers

    What does the acronym 'KISS' stand for in a PowerPoint presentation?

    <p>Keep Information Short and Simple</p> Signup and view all the answers

    Which of the following best describes the role of a speaker's note during a presentation?

    <p>To remind the presenter of key points</p> Signup and view all the answers

    What is the main reason A.C drives are preferable for high-speed operations?

    <p>They have no brushes and commutation.</p> Signup and view all the answers

    Which circuit is crucial for maintaining oscillations in an oscillator circuit?

    <p>Positive feedback</p> Signup and view all the answers

    Which type of feedback network is utilized in an automatic voltage stabilizer?

    <p>Voltage divider network</p> Signup and view all the answers

    What instrument is specifically designed to measure insulation resistance in a 3-phase induction motor?

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

    Which method is employed for speed control in food mixture motors?

    <p>Series field tapping method</p> Signup and view all the answers

    What device protects against overload and short circuit in a panel board?

    <p>Miniature circuit breaker</p> Signup and view all the answers

    What material is commonly used in the production of solar cells?

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

    Which instrument is utilized to test the armature winding for short and open circuits?

    <p>External Growler</p> Signup and view all the answers

    What is the purpose of damper winding in a synchronous motor at starting?

    <p>To produce a high magnetic field to maintain a constant speed</p> Signup and view all the answers

    What is the synchronous speed of a 3-phase induction motor having 6 poles at a frequency of 50 Hertz?

    <p>1000 rpm</p> Signup and view all the answers

    Which electronic circuit generates an A.C signal without input?

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

    What is the formula to calculate the back EMF in a DC motor?

    <p>Eb = φZNP/60 A</p> Signup and view all the answers

    How many parallel paths are there in duplex lap winding in the armature of a 4 pole D.C motor?

    <p>2</p> Signup and view all the answers

    Which type of DC motor is commonly used for constant speed drives?

    <p>DC shunt motor</p> Signup and view all the answers

    Which application requires only DC?

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

    Which quantity can be measured by a CRO (Cathode Ray Oscilloscope)?

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

    Study Notes

    Trade Theory

    • AC drives are better for high-speed operation because they don't use brushes and commutation.
    • Positive feedback is essential for oscillations in oscillator circuits.
    • Voltage divider networks are used in automatic voltage stabilizers.
    • A megger is used for measuring insulation resistance in 3-phase induction motors.
    • Series field tapping method is used in food mixer motors' speed control.
    • Miniature circuit breakers protect panel boards from overload and short circuits.
    • Sensors are avoided in panel board assemblies.
    • An external growler is used to test armature windings for short and open circuits.
    • A growler is a type of instrument to test armature windings.
    • Silicon is used in solar cells.
    • La = (V - Eb) / Ra is the formula for calculating current taken by a DC shunt motor armature.
    • DC 3-wire system is indicated by the red, blue, and black colored conductors.
    • Televisions use automatic stepped voltage stabilizers.
    • Rolling machines in industries often use multi-motor electric drives.
    • A multimeter is used to check short circuit faults in electronic circuits in voltage stabilizers.
    • PVC covered copper wire is used for rewinding submersible pumps.
    • AC drives are commonly used in process plants due to their maintenance-free and long lifespan.
    • LC filters are used to remove voltage spikes in rectifier circuits.
    • LCDs on basic operator panels of DC drives show monitored parameters.
    • IGBTs act as DC bus switching devices in VF drives.
    • Thermal power generation is a conventional form of power generation.
    • Boron is used to make p-type semiconductors.
    • ACSR stands for Aluminum Conductor Steel Reinforced.

    Electrician 2nd Year Modal Paper-1 - Page 2

    • Fleming's right-hand rule determines current direction in DC motors.
    • Fleming's right-hand rule is also used for finding magnetic field direction.
    • Electro-chemical equivalent is the mass of a liberated substance from an electrolyte by one coulomb of electricity.
    • Slip controllers are used for eddy current drives.
    • Damper windings in synchronous motors provide a high initial magnetic field for maintaining consistent speed at startup.
    • Synchronous motors act as power factor correctors by varying their field excitation.
    • Oscillator circuits generate AC signals without an input signal.
    • Inverters are used to convert DC to AC.
    • Electroplating applications require only DC.
    • Calculating pitch factor (Kp) involves winding and stator slot and pole details.
    • Slot distance calculation for ceiling fans depends on slot, pole, and coil counts.
    • Synchronous speed of a 3-phase induction motor with 6 poles and 50 Hz is 1000 rpm.
    • Alternators with 6 poles running at 1000 rpm have a 50 Hz supply frequency.
    • Alternators with 4 poles and a 50 Hz supply frequency operate at 1500 rpm
    • Pitch factor calculation uses winding and pole pitch.
    • DC series motors provide constant speed drives.
    • Parallel paths in duplex lap windings of a 4-pole DC motor are 2.
    • Parallel paths in duplex lap windings of a 4-pole DC generator are 8.

    Electrician 2nd Year Modal Paper-1 - Page 3

    • Resistors in 4-point starters limit current in NVC.
    • Dynamic balancing is a method for balancing armatures.
    • Oscilloscopes (CROs) measure frequency.
    • Cyclo converters are frequency converters.
    • Selling price (S.P.) is an expanded form.
    • Lubricants reduce friction in machine parts.
    • Profit/gain is expressed in percentage.
    • A thermostatic switch regulates heat in an automatic iron.
    • Porcelain clay is used for line insulators.
    • Technology advances lead to changes in work processes.
    • Email and internet connection are essential in modern communication.
    • Skills and self-belief contribute to career growth and sustainability.
    • Misunderstandings arise from poor communication.
    • Input/output devices (excluding keyboards) are being discussed.
    • Keeping a balance between mental and physical activities, such as hobbies, is important.
    • Speakers' notes provide presenters with information they might want to cover in their presentation.

    Electrician 2nd Year Modal Paper-1 - Page 4

    • Senior female employee presides over the ICC within an organization.
    • Effective networking requires consistent contact with your contacts.
    • Sustainable business practices avoid negatively impacting the environment and community.
    • Respect should be shown while speaking at workplaces.
    • Emojis can substitute for insufficient verbal communication.
    • MS Power Point is a computer presentation software program.
    • Technology has significantly transformed workplaces.
    • Nonverbal communication includes gestures, facial expressions, and eye contact.
    • Basic computer requirements for IT work exist.
    • PowerPoint presentations should keep information short and simple (KISS).
    • Effective communication involves attentive listening and clear speaking.
    • Area houses' pricing is related to area location and construction.
    • Merchants profit calculation is given.
    • Rainwater harvesting helps prevent water shortages.
    • "Good condition" describes road quality.
    • Business cards help provide appropriate business information.

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    Electrician 2nd Year Modal Paper-1 PDF

    Description

    Test your knowledge on various aspects of trade theory, focusing on electrical engineering concepts and applications. This quiz covers topics like AC drives, voltage stabilizers, and insulation resistance measurement in induction motors. Enhance your understanding of electrical components and their functionalities.

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