Insufficient water flow through a cooling tower can

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result in

A$.$ low system operating pressures.

B$.$ high system operating pressures.

C$.$ high head pressure and low suction pressure.

D$.$ low head pressure and high suction pressure.

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What system component is used to move water through the condenser and cooling tower?

A$.$ Centrifugal fan

C$.$ Perpetual fan

B$.$ Centrifugal pump

D$.$ Perpetual pump

The term "feet of head" is used to express

A$.$ fan capacity.

C$.$ compressor capacity.

B$.$ pump capacity.

D$.$ system capacity.

On a close$-$coupled pump, the impeller is

A$.$ mounted directly on the motor shaft.

B$.$ connected to the motor shaft using a $90-$degree linkage.

C$.$ turned by means of a belt$-$driven assembly.

D$.$ rotated at a speed that is different from that of the motor.

On a base$-$mounted pump,

A$.$ the pump is connected directly to the shaft of the motor.

B$.$ the pump turns at a speed that is different from that of the motor.

C$.$ a flexible coupling or connector is positioned between the pump and the motor.

D$.$ the pump and motor must be aligned in the field during installation.

Two types of seals found on pumps are the

A$.$ mechanical seal and the centrifugal seal.

B$.$ packing gland and the centrifugal seal.

C$.$ mechanical seal and the pressure seal.

D$.$ stuffing box and the mechanical seal.

How is a packing gland tightened?

A$.$ By hand

B$.$ With a wrench

C$.$ With a Phillips screwdriver

D$.$ With a Torx screwdriver

Which type of pump seal is typically used for pressures up to a maximum of $300$ psig?

A$.$ Mechanical seal

C$.$ Stuffing box

B$.$ Pressure seal

D$.$ Centrifugal seal

Which type of pump seal is typically used for pressures up to a maximum of $150$ psig $?$

A$.$ Packing gland

C$.$ Mechanical seal

B$.$ Stuffing box

D$.$ Pressure seal

How are seals on circulator pumps typically lubricated?

A$.$ Water

C$.$ Refrigerant

B$.$ Oil

D$.$ Brine

Which of the following best describes a centrifugal pump found on cooling towers?

A$.$ Copper impeller mounted on a stainless$-$steel shaft

B$.$ Stainless$-$steel impeller mounted on a stainless$-$steel shaft

C$.$ Bronze impeller mounted on a brass shaft

D$.$ Brass or bronze impeller mounted on a stainless$-$steel shaft