Aux 1 Unit 5 Q5

1 / 10

Which of the following is a common application for gear pumps?

C) Pumping corrosive chemicals

D) Pumping large solids

A) Pumping highly viscous fluids like oils

B) Pumping air in pneumatic systems

2 / 10

In a gear pump, how is the fluid pressure generated?

D) By increasing the speed of the gears

B) By the reduction of the volume between the gear teeth and casing as the gears rotate

A) By heating the fluid

C) By the expansion of the fluid

3 / 10

How does a gear pump ensure that fluid is moved from the inlet to the outlet without backflow?

C) The fluid is cooled to prevent backflow

D) The gears operate at very high speeds to push the fluid forward

A) The pump uses one-way check valves

B) The tight meshing of the gears creates a seal that prevents backflow

4 / 10

Which type of gears are typically used in a gear pump?

B) Helical gears

C) Spur gears

D) Worm gears

A) Bevel gears

5 / 10

What could happen if a gear pump is run dry (without fluid)?

A) The pump would operate more efficiently

C) The pump would generate higher pressure

D) The pump would reduce its speed automatically

B) The gears could overheat and wear out quickly, leading to pump failure

6 / 10

What is the role of the drive gear in a gear pump?

D) To filter the fluid before it enters the pump

A) To generate suction at the pump inlet

C) To transmit mechanical energy from the motor to the driven gear

B) To control the speed of the pump

7 / 10

What is the primary mechanism by which a gear pump moves fluid?

D) The rotation of an impeller

C) The oscillation of a diaphragm

B) The meshing of two gears to trap and move fluid between the gear teeth and the pump casing

A) Centrifugal force

8 / 10

In a gear pump, what happens to the fluid once it enters the pump through the inlet?

D) The fluid is compressed and then expelled through the outlet

A) The fluid is heated before it is moved through the pump

C) The fluid is filtered before being discharged

B) The fluid is trapped between the gear teeth and the casing and then moved around the gears towards the outlet

9 / 10

Why are gear pumps typically not used for pumping fluids containing large solids?

D) Gear pumps are designed to operate at very high speeds

B) The solids improve the efficiency of the pump

C) Gear pumps are too expensive for such applications

A) The solids can cause wear and damage to the gears and casing

10 / 10

What would likely happen if the clearances between the gears and the casing in a gear pump were too large?

D) The pump would generate more pressure

B) The pump would experience increased leakage, reducing its efficiency

C) The pump would move fluid faster

A) The pump would operate more efficiently

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