Automatic Flow Controls Quiz

What is the definition of 'Automatic' in the context of flow controls?

• A control system that operates manually

• A control system that operates with human intervention

• A control system that operates without human intervention

• A control system that operates intermittently

Answer explanation

The definition of 'Automatic' in the context of flow controls is a control system that operates without human intervention.

What is the purpose of a 'Bleed port' in a flow controller?

• To measure the pressure of the fluid

• To increase the fluid flow

• To remove unneeded fluid from the controller

• To regulate the temperature of the fluid

Answer explanation

The purpose of a 'Bleed port' in a flow controller is to remove unneeded fluid from the controller, not to measure pressure, increase flow, or regulate temperature.

What is the function of the 'Diaphragm' in a flow control system?

• To increase the pressure of the fluid

• To separate two control chambers

• To measure the temperature of the fluid

• To regulate the flow of fluid

Answer explanation

The function of the 'Diaphragm' in a flow control system is to separate two control chambers.

What is the 'Flare (SAE) connection' used for in flow controls?

• To measure the temperature of the fluid

• To connect piping to valves using bolts

• To regulate the flow of fluid

• To increase the pressure of the fluid

Answer explanation

The 'Flare (SAE) connection' is used to connect piping to valves using bolts, making it the correct choice.

What does 'Maximum operating pressure' refer to in a flow control system?

• The pressure at which the system shuts down

• The highest allowable pressure in a system

• The lowest allowable pressure in a system

• The average pressure in a system

Answer explanation

The 'Maximum operating pressure' refers to the highest allowable pressure in a system, ensuring it does not exceed this limit.

What is the purpose of a 'Needle' in a flow control valve?

• To increase the pressure of the fluid

• To provide the sealing action of a valve

• To measure the temperature of the fluid

• To regulate the flow of fluid

Answer explanation

The purpose of a 'Needle' in a flow control valve is to provide the sealing action of a valve, ensuring that the flow of fluid is regulated.

What is the definition of 'pressure drop' in the context of flow controls?

• The highest pressure in a refrigeration system

• The lowest pressure in a refrigeration system

• A loss in refrigerant pressure due to a restriction

• An increase in refrigerant pressure due to a restriction

Answer explanation

Pressure drop refers to a loss in refrigerant pressure due to a restriction in the flow control system.

What is the 'saturated discharge pressure' in a refrigeration system also known as?

• Saturated suction pressure

• Low-side pressure

• High-side pressure

• Saturated evaporator pressure

Answer explanation

The 'saturated discharge pressure' in a refrigeration system is also known as the high-side pressure.

What does 'saturated suction temperature' refer to in a refrigeration system?

• The temperature of the refrigerant at 50% vapour at a specific temperature

• The temperature of the refrigerant at 75% vapour at a specific temperature

• The temperature of the refrigerant at 0% vapour at a specific temperature

• The temperature of the refrigerant at 100% vapour at a specific temperature

Answer explanation

The 'saturated suction temperature' refers to the temperature of the refrigerant at 100% vapour at a specific temperature in a refrigeration system.

What is the function of the 'sensing element' in a flow control system?

• To separate two control chambers

• To respond quantitatively to changes in the controlled variable

• To regulate the flow of fluid

• To increase the pressure of the fluid

Answer explanation

The function of the 'sensing element' in a flow control system is to respond quantitatively to changes in the controlled variable.