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C - External gear pump

D - Internal gear pump

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Question 4:
Both lobe and gear pump types are recommended for applications in which abrasive fluids are pumped.
A - True
B - False
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Question 5:
If a screw pump has three rotors and takes suction at each end of the pump, the driving power for the two idler rotors is provided by:
A - An external timing chain that is driven by the central rotor
B - An external gear drive that is turned by a gasoline engine
C - Direct contact with the central power rotor
D - Liquid pressure between the two idler rotors and the power rotor
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Question 6:
A flexible tube pump is also called a:

A - Rotary plunger pump
B - Sliding vane pump
C - Shuttle block pump
D - Peristaltic pump
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Question 7:
A relief valve should be installed on the discharge side of a rotary pump to:

A - Prevent the pump driver from stalling
B - Prevent damage to the pump due to excessive temperatures
C - Protect the pump against excessive pressure
D - Protect the pump against excessive wear
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Question 8:
In an external gear pump, the:

A - Larger gear causes the smaller gear to turn faster causing increased pressure
B - Liquid trapped between the gear teeth and casing is forced toward the discharge
C - Leakage allows the fluid to progress from one gear to the next causing increased pressure
D - Gears turn in the same direction and squeeze the liquid between them
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Question 9:
Which pump consists of a housing containing two gears:

A - Sliding Vane Pump
B - External Gear Pump
C - Internal Gear Pump
D - Three Lobe Pump
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Question 10:
The type of rotary pump that has a series of hinged vanes is the:

A - Three lobe pump
B - Sliding vane pump
C - Rotary plunger pump
D - Swinging vane pump

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Question 11:
The type of rotary pump that uses external synchronizing gears is the:
A - External gear pump
B - Shuttle block pump
C - Three lobe pump
D - Sliding vane pump

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Question 12:
As the rotor moves in a sliding vane pump, the vanes are ____________, creating a void at the suction port. As the void ___________, the liquid is discharged from the pump.
A - retracted, diminishes
B - forced out, increases
C - forced out, diminishes
D - retracted, diminishes
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Question 13:
The internal gear pump has an externally-cut gear, which:
A - Meshes with an externally-cut gear on one side of the casing
B - Is positioned at the bottom and an idler or driven gear at the top
C - Is positioned at the top and an idler or driven gear at the bottom
D - Meshes with an internally-cut gear on one side of the casing
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Question 14:
When the rotor revolves in a universal joint pump, four sets of flat surfaces open and close for a pumping action of:
A - One discharge per revolution
B - Four discharges per revolution
C - Two discharges per revolution
D - None of the above
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Question 15:
When a rotary pump is in operation:
A - The flow of liquid is in pulses and quite irregular
B - The flow of liquid is smooth and continuous
C - The discharge pressure tends to pulsate as the rotating parts intermesh
D - Centrifugal force pushes the liquid to the outside of the rotating parts causing pressure accumulation
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Question 16:
The type of rotary pump in which the gears are separated by a crescent shaped partition is the:
A - External gear pump
B - Shuttle block pump
C - Internal gear pump
D - Universal joint pump
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Question 17:
An external gear pump can prime itself by discharging the air trapped in the casing if:
A - The clearance at the ends of the gears, between the gears and the casing is small and the suction lift is at maximum
B - The clearance at the ends of the gears, between the gears and the casing is wide and the suction lift is not too great
C - The clearance at the ends of the gears, between the gears and the casing is small and the suction lift is not too great
D - There is no clearance at the ends of the gears, between the gears and the casing and the discharge valve is closed
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Question 18:
If your plant was handling flows that contained a high amount of solids, the best type of rotary pump to use in that process flow would be a/an:
A - Three lobe pump
B - Two lobe pump
C - Internal gear pump
D - External gear pump
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Question 19:
The rotating lobes of a lobe pump are kept in synchronous motion because:
A - The smaller lobe is used to drive the larger lobe for improved pump power
B - External synchronizing gears drive the lobes
C - The central lobe turns at a constant speed, keeping the outer lobes synchronized
D - The largest lobe is always used to drive the smaller lobe
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Question 20:
To prevent excessive pressure, rotary pumps should be started with:
A - The discharge valve closed
B - The discharge valve open
C - The suction valve closed
D - Both suction and discharge valves closed
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Question 21:

Which pump uses external synchronizing gears:

A - External Gear Pump
B - Sliding Vane Pump
C - Internal Gear Pump
D - Three Lobe Pump
_______________________________________________

Question 22:
In a sliding vane pump, the rotor is:
A - Positioned at the top and an idler or driven gear at the bottom
B - Located between two idler rotors
C - Centrally mounted in the pump cavity
D - Eccentrically mounted in the pump cavity
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Question 23:
In a three-rotor screw pump, the liquid is:
A - Drawn into the middle of the rotor
B - Pushed from the suction side of the pump to the discharge side
C - Drawn into one end of the rotor
D - Drawn into both ends of the rotor
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Question 24:

What pump has a cylindrical rotor turning in a concentric casing:

A - Flexible tube pump


Date: 2016-01-05; view: 776


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