Neogen Chemicals Utility Operator Interview Questions and Answers

Types of pumps include centrifugal pumps, reciprocating pumps, and rotary pumps.

• Centrifugal pumps use centrifugal force to move fluid through a rotating impeller.

• Reciprocating pumps use a piston or diaphragm to create pressure and move fluid.

• Rotary pumps use rotating mechanisms to transfer fluid, such as gear pumps or vane pumps.

Seal compression can be calculated by measuring the initial thickness of the seal and the final thickness after compression.

• Measure the initial thickness of the seal using a caliper or micrometer.

• Apply a known force to compress the seal.

• Measure the final thickness of the seal after compression.

• Subtract the initial thickness from the final thickness to calculate the seal compression.

• Seal Compression = Final Thickness -

To start the pump, ensure power supply is connected, prime the pump, open the discharge valve, and switch on the pump motor.

• Check if the power supply is connected and turned on

• Prime the pump by filling the pump casing with liquid

• Open the discharge valve to allow the liquid to flow

• Switch on the pump motor to initiate pumping action

Centrifugal pumps use centrifugal force to move fluid, while positive displacement pumps use mechanical action to displace fluid.

• Centrifugal pumps use an impeller to create centrifugal force, which pushes the fluid outward.

• Positive displacement pumps use rotating or reciprocating mechanisms to displace fluid.

• Centrifugal pumps are typically used for high flow rates and low-pressure applications.

• Positive displacement pum...read more