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LIVE EXAMINATION FLUID MECHANICS (03-04-2019 to 04-04-2019)

Quiz by Wincentre Classes

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10 questions
Show answers
  • Q1
    A Pelton wheel is ideally suited for
    Low head and low discharge
    Medium head and medium discharge
    High head and high discharge
    High head and low discharge
    30s
  • Q2
    The channel which carries water away from the power house after it has been passed through the turbine is :
    Main canal
    Penstock
    Tail-race
    Regulator
    30s
  • Q3
    The ratio of quantities of liquid discharged from pump to that passing through impeller at unit time is known as
    Volumetric efficiency
    Overall efficiency
    Mechanical efficiency
    Manometric efficiency
    30s
  • Q4
    In a hydro electric scheme which of the following is used to carry water from storage reservoir to the power house?
    Draft Tube
    Forebay
    Intake Structure
    Penstock
    30s
  • Q5
    Which of the following statement is INCORRECT?
    Modern Francis turbines are inward mixed flow reaction turbines
    Francis turbines operate under medium heads and require medium quantity of water.
    The head acting on the Francis turbine is fully transformed into kinetic energy leaving no pressure head
    In Francis turbine, the difference of pressure between the guide vanes and the runner creates the reaction pressure.
    30s
  • Q6
    The valve which allows water to flow only in one direction and prevents it from flowing back is known as
    Reflux valve
    Non-return valve
    Both reflux and non return valve
    Gate valve
    30s
  • Q7
    In a reciprocating pump, negative slip occurs when
    All of these
    Length of the suction pipe is more
    Delivery head is low
    Pump speed is high
    30s
  • Q8
    In a reciprocating pump the rotator motion of the crank converts into......... motion of the plunger
    Reciprocating motion
    Circular motion
    Oscillating motion
    None of these
    30s
  • Q9
    What is the maximum theoretical possible suction head for centrifugal pump
    760 mm
    760m
    10.33 m
    12.4 m
    30s
  • Q10
    The mercury does not wet the glass. This is due to the property of the liquid known as
    Cohesion
    Adhesion
    Viscosity
    Surface tension
    30s

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