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Three Phase system

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51 questions
Show answers
  • Q1
    The transformer works on :________________
    AC/DC supply
    None of them
    DC supply
    AC supply
    30s
  • Q2
    The measuring unit of current is :________________
    Volt
    Ampere
    Watt
    Ohm
    30s
  • Q3
    The measuring unit of electrical voltage is :________________
    Ohm
    Volt
    Watt
    Hz
    30s
  • Q4
    The measuring unit of electrical resistance is : ________________
    Watt
    Volt
    Ampere
    Ohm
    30s
  • Q5
    The measuring unit of active power is :________________
    Hz
    V.A
    V.A.R
    Watt
    30s
  • Q6
    measuring unit of reactive power is :________________
    Volt
    Watt
    V.A.R
    V.A
    30s
  • Q7
    The measuring unit of apparent power is :________________
    V.A.R
    V.A
    Ohm
    W.Hr
    30s
  • Q8
    The measuring unit of energy is :________________
    Kw.Hr
    Volt
    V.A
    Kw
    30s
  • Q9
    The measuring unit of frequency is :________________
    r.p.m
    Hz
    Ohm
    Watt
    30s
  • Q10
    The rated value of voltage at single phase system in Bahrain is :_____________
    240 A
    240 V
    415 V
    215 V
    30s
  • Q11
    The rated value of voltage at three phase system in Bahrain is :_____________
    215 V
    380 V
    415 V
    400 V
    30s
  • Q12
    The rated value of frequency in Bahrain is :_______________
    60 Hz
    50 Hz
    60 Hz
    60 r.p.m
    30s
  • Q13
    The unit which gives us electrical power is called :________________
    Power meter
    Electrical load
    Power factor
    Power supply
    30s
  • Q14
    The unit which consumes electrical power is called :________________
    Electrical energy
    Power supply
    Power factor
    Electrical load
    30s
  • Q15
    At single phase system we can use :________________
    Both (b )and (c )
    Parallel connection
    Star connection
    Series connection
    30s

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