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Questions and Answers
The hydraulic pump converts hydraulic energy into mechanical energy.
The hydraulic pump converts hydraulic energy into mechanical energy.
False (B)
The pump creates a partial vacuum at its outlet.
The pump creates a partial vacuum at its outlet.
False (B)
A centrifugal pump is an example of non-positive displacement pump.
A centrifugal pump is an example of non-positive displacement pump.
False (B)
Positive displacement pumps have high-pressure capability up to 12,000 psi.
Positive displacement pumps have high-pressure capability up to 12,000 psi.
Positive displacement pumps have small changes in efficiency throughout the design pressure range.
Positive displacement pumps have small changes in efficiency throughout the design pressure range.
Pumps operate on the principle whereby a partial vacuum is created at the pump inlet due to the internal operation of the pump.
Pumps operate on the principle whereby a partial vacuum is created at the pump inlet due to the internal operation of the pump.
Gear pumps can have fixed or variable displacement.
Gear pumps can have fixed or variable displacement.
The displacement volume of a pump is denoted by the symbol VD.
The displacement volume of a pump is denoted by the symbol VD.
Volumetric efficiency, ηυ, for positive displacement pumps is typically close to 100%.
Volumetric efficiency, ηυ, for positive displacement pumps is typically close to 100%.
A small clearance must be maintained between the gear teeth tip and pump housing to avoid any leakage.
A small clearance must be maintained between the gear teeth tip and pump housing to avoid any leakage.
Positive displacement pumps have high volumetric efficiency.
Positive displacement pumps have high volumetric efficiency.
Centrifugal pump is an example of a positive displacement pump.
Centrifugal pump is an example of a positive displacement pump.
The hydraulic pump converts mechanical energy into hydraulic energy.
The hydraulic pump converts mechanical energy into hydraulic energy.
Positive displacement pumps do not have small changes in efficiency throughout the design pressure range.
Positive displacement pumps do not have small changes in efficiency throughout the design pressure range.
The pump creates a partial vacuum at its inlet to permit atmospheric pressure to force the fluid into the pump.
The pump creates a partial vacuum at its inlet to permit atmospheric pressure to force the fluid into the pump.
Gear pumps can have both fixed and variable displacement capabilities, as mentioned in the text?
Gear pumps can have both fixed and variable displacement capabilities, as mentioned in the text?
Positive displacement pumps typically have a volumetric efficiency close to 100%, as per the text?
Positive displacement pumps typically have a volumetric efficiency close to 100%, as per the text?
Piston pumps can have both fixed and variable displacement capabilities, according to the text?
Piston pumps can have both fixed and variable displacement capabilities, according to the text?
The theoretical flow rate of a gear pump is based on volumetric displacement and pump speed, as mentioned in the text?
The theoretical flow rate of a gear pump is based on volumetric displacement and pump speed, as mentioned in the text?
Vane pumps can be of both unbalanced and balanced types, as per the text?
Vane pumps can be of both unbalanced and balanced types, as per the text?
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