Hydraulic Machines MCQs with answers Page - 1

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Q. A hydraulic accumulator normally consists of

  • (A) two cylinders, two rams and a storage device
  • (B) a cylinder and a ram
  • (C) two co-axial rams and two cylinders
  • (D) a cylinder, a piston, storage tank and control valve

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Q. A hydraulic intensifier normally consists of

  • (A) two cylinders, two rams and a storage device
  • (B) a cylinder and a ram
  • (C) two co-axial rams and two cylinders
  • (D) a cylinder, a piston, storage tank and control valve

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Q. A turbine pump is basically a centrifugal pump equipped additionally with

  • (A) adjustable blades
  • (B) backward curved blades
  • (C) vaned diffusion casing
  • (D) inlet guide blades

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Q. According to fan laws, at constant pressure, the speed capacity and power vary

  • (A) directly as the air or gas density
  • (B) inversely as square root of density
  • (C) inversely as density
  • (D) as square of density

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Q. According to fan laws, at constant speed and capacity, the pressure and power vary

  • (A) directly as the air or gas density
  • (B) inversely as square root of density
  • (C) inversely as density
  • (D) as square of density

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Q. According to fan laws, at constant weight of air or gas, the speed, capacity and pressure vary

  • (A) directly as the air or gas density
  • (B) inversely as square root of density
  • (C) inversely as density
  • (D) as square of density

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Q. According to fan laws, for fans having constant wheel diameter, the air or gas capacity varies

  • (A) directly as fan speed
  • (B) square of fan speed
  • (C) cube of fan speed
  • (D) square root of fan speed

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Q. According to fan laws, for fans having constant wheel diameter, the pressure varies

  • (A) directly as fan speed
  • (B) square of fan speed
  • (C) cube of fan speed
  • (D) square root of fan speed

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Q. According to fan laws, for the fans having constant wheel diameters, the power demand varies

  • (A) directly as fan speed
  • (B) square of fan speed
  • (C) cube of fan speed
  • (D) square root of fan speed

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Q. Air vessels in reciprocating pump are used to

  • (A) smoothen flow
  • (B) reduce acceleration to minimum
  • (C) increase pump efficiency
  • (D) save pump from cavitation

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