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: Decrease with increase in pressure Explanation

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c: Decrease with increase in pressure Explanation

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d: unpredictable Explanation

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2) The positive displacement pumps work on the principle of:

a: Dynamic action of liquid 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 Pumpanswer1 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 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 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 decrease, overall efficiency decreases Explanation

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9) Continuous discharge of liquid is achieved in Gar 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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