Virtual Labs

Performance Characteristics of Gear Pump

“1.” Flow rate in gear pump:

a: Remains constant with increase in pressure Explanation

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b: Decreases with increase in pressure Explanation

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c: Increases with decrease in pressure Explanation

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d: unpredictable Explanation

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“2.” The positive displacement pumps work on this principle:

a: Liquid has dynamic action Explanation

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b: Liquid is discharged due to the positive displacement Explanation

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c: Positive velocity Explanation

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d: Positive Pressure Explanation

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“3.” Which one of the following is not a positive displacement pump?

a: Vane Pump Explanation

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b: Gear pump Explanation

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c: Centrifugal pump Explanation

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d: Screw pump Explanation

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“4.” Gear pump is most suitable to pump .

a: paint Explanation

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b: water Explanation

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c: hydrogen Explanation

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d: air Explanation

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“5.” Rotation of gears in internal gear pump is in .

a: independent of each other Explanation

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b: opposite direction Explanation

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c: same direction Explanation

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d: either same or opposite direction Explanation

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“6.” Rotation of gears in external gear pump is in .

a: independent of each other Explanation

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b: opposite direction Explanation

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c: same direction Explanation

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d: either same or opposite direction Explanation

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“7.” Internal leakage in internal gear pump is caused due to:

a: Less tolerance level between the meshing surfaces Explanation

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b: More tolerance level between the meshing surfaces Explanation

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c: No tolerance between the meshing surfaces Explanation

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d: None of these Explanation

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“8.” Relation between pressure and overall efficiency for a gear pump is:

a: Pressure increases, overall efficiency decreases Explanation

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b: Pressure increases, overall efficiency increases Explanation

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c: Overall efficiency is independent of pressure Explanation

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d: Pressure decreases, overall efficiency decreases Explanation

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“9.” Continuous discharge of liquid is achieved in gear pump by:

a: Increasing diameter of gears Explanation

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b: Decreasing size of gears Explanation

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c: Increasing number of teeth Explanation

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d: Decreasing number of teeth Explanation

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“10.” How does the fluid flow in internal gear pump?

a: Fluid enters the suction side between rotor, which is a small exterior gear and idler which is a large interior gear Explanation

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b: Fluid enters the suction side between rotor and idler which rotate in different directions Explanation

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c: Fluid enters the suction side between rotor, which is a large exterior gear and idler which is a small interior gear Explanation

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d: None of these Explanation

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