What type of pump requires a coupling between the pump and the motor in order to transfer energy from the motor to the pump?

What type of pump requires a coupling between the pump and the motor in order to transfer energy from the motor to the pump?

• A. End suction pump
• B. Frame mounted pump
• C. Vertical turbine pump
• D. Submersible pump

Answer: (B)

The energy transfer from the motor to the pump is achieved by how the pump is driven: either directly on the motor shaft or through a separate coupling. A frame-mounted pump is two separate units—the pump and the motor on a common baseplate—connected by a shaft and a coupling. This coupling precisely transfers the motor’s rotational energy to the pump while allowing small misalignments and easier servicing. End suction pumps are often close-coupled, meaning the impeller sits directly on the motor shaft with no external coupling. Vertical turbine pumps use a drive shaft built into the pump assembly, not a separate shaft coupled to a motor. Submersible pumps integrate the motor and pump in one sealed unit, so there’s no external coupling at all. So, the setup that requires a coupling between pump and motor is the frame-mounted pump.

The energy transfer from the motor to the pump is achieved by how the pump is driven: either directly on the motor shaft or through a separate coupling. A frame-mounted pump is two separate units—the pump and the motor on a common baseplate—connected by a shaft and a coupling. This coupling precisely transfers the motor’s rotational energy to the pump while allowing small misalignments and easier servicing. End suction pumps are often close-coupled, meaning the impeller sits directly on the motor shaft with no external coupling. Vertical turbine pumps use a drive shaft built into the pump assembly, not a separate shaft coupled to a motor. Submersible pumps integrate the motor and pump in one sealed unit, so there’s no external coupling at all. So, the setup that requires a coupling between pump and motor is the frame-mounted pump.