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Principles Exam Prep

Quiz by Pete Roberts

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23 questions
Show answers
  • Q1
    The neutral conductor allows unbalanced 3 phase loads to operate
    safely
    unsafely
    at night
    30s
  • Q2
    Double Insulation equipment does
    is class 1
    not need an earth connection
    needs an earth
    30s
  • Q3
    Area is measured in
    meters
    Metres cubed
    m
    Square meters
    30s
  • Q4
    Ground source heat pumps extract warmth from the ground which first originated from the
    Saturn
    Jupiter
    moon
    sun
    30s
  • Q5
    A commercial or industrial property would require
    400 V 3 phase & neutral supply
    3 phase supply
    single phase supply
    single phase 400 V supply
    30s
  • Q6
    What is the frequency of the mains
    50 Hz
    25 Hz
    100 Hz
    230 Hz
    30s
  • Q7
    A device which magnetises when an electrical current flows through it is known as
    non-ferrous
    permanent magnet
    electromagnetic
    ferrous
    30s
  • Q8
    The National Grid voltage is
    400 kV
    11 kV
    132 kV
    33 kV
    30s
  • Q9
    Transformers only work on
    water
    direct current
    alternating current
    air
    30s
  • Q10
    Which of the following is correct
    voltage flows, current develops across
    current develops across
    current flows, voltage develops across
    voltage develops through
    30s
  • Q11
    Batteries prefer
    primary current
    direct current
    alternating current
    a.c.
    30s
  • Q12
    The mains is classified as
    230 V, single phase, alternating current with a frequency of 50 Hz
    230 V, single phase, alternating current with a frequency of 100 Hz
    230 V, single phase, direct current with a frequency of 50 Hz
    400 V, single phase, alternating current with a frequency of 50 Hz
    30s
  • Q13
    A transformer that boosts voltage up is known as
    step down
    step in
    step up
    step out
    30s
  • Q14
    Resistance
    aids currents
    helps current
    augments currents
    opposes current
    30s
  • Q15
    A device which uses a low power electrical signal to control a much bigger electrical supply is known as
    transistor
    transducer
    transformer
    relay
    30s

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