Question 1

Pressure regulators consist of a(n) -type pressure gauge and a control relay.&#10;A)mercury&#10;B)Bourdon&#10;C)water&#10;D)air

Accepted Answer

Pressure regulators typically use a Bourdon type pressure gauge, which uses a curved tube that is deformed by the pressure of the gas or fluid being measured. This deformation causes the needle on the gauge to move, indicating the current pressure. The control relay then adjusts the pressure as needed to maintain the desired level. Mercury and water gauges are not commonly used in pressure regulators, and air gauges are not typically accurate enough for precise pressure control. Pressure regulators typically use Bourdon type pressure gauges as they are specifically designed to measure pressure in applications such as this. Mercury pressure gauges are typically used in laboratory applications and water pressure gauges are typically used in plumbing applications. Air pressure gauges may be used, but Bourdon gauges are more commonly found in industrial settings. The control relay is also a necessary component of a pressure regulator, but is not part of the question prompt.

Question 2

A limited variety of pressure switches are available for control requirements of pneumatic or hydraulic machines.

Accepted Answer

This statement is false. There are a wide variety of pressure switches available for control requirements of pneumatic or hydraulic machines. Different types of pressure switches include differential pressure switches, vacuum pressure switches, and adjustable pressure switches, among others. This statement is false. There are many different types of pressure switches available for control requirements of pneumatic or hydraulic machines. These switches can vary in their operating range, sensing technology, size, and electrical output.

Question 3

A diaphragm-actuated switch can be used when a sensitive response is required to small pressure changes at high- pressure ranges.

Accepted Answer

A diaphragm-actuated switch is typically used for low to moderate pressure ranges where sensitivity to small pressure changes is needed, not high-pressure ranges.

Question 4

Any industrial application that has a pressure-sensing requirement can use a pressure switch.

Accepted Answer

Pressure switches are commonly used in various industrial applications such as hydraulic and pneumatic systems, pumps, compressors, and boilers to sense and control pressure levels. This statement is true. Pressure switches are commonly used in industrial applications where pressure measurement is required, such as monitoring the pressure in pipelines or controlling the pressure in HVAC systems.

Question 5

A metal bellows-actuated control is used for pressures up to pounds per square inch (psi).&#10;A)40&#10;B)100&#10;C)2000&#10;D)4000

Accepted Answer

Metal bellows-actuated controls are known for their high pressure capabilities. They can typically be used for pressures up to 2000 psi, making option C the best choice. Options A and B are too low, while option D is too high for most applications. Metal bellows-actuated controls are generally used for high-pressure applications, typically up to 2000 psi. Therefore, option C is the best choice. Options A and B are too low, while option D is too high.

Question 6

The most commonly used pressure switches are single-pole switches.

Accepted Answer

Single-pole pressure switches are the most commonly used type of pressure switch. They have only one circuit and can either be normally open or normally closed. Most pressure switches are single-pole switches, meaning they have one circuit that is either open or closed depending on the pressure being sensed. However, there are also double-pole pressure switches that have two circuits that can be opened or closed independently.

Question 7

Pressure regulators provide accurate control of pressure or vacuum conditions for systems.

Accepted Answer

Pressure regulators are designed to accurately maintain and control pressure or vacuum conditions for various systems, making them a valuable tool in many applications. Pressure regulators are designed to regulate and maintain a specific pressure or vacuum level in a system by controlling the flow of gas or liquid. They are widely used in industries such as manufacturing, healthcare, and energy to ensure safety and reliability in the system's operation.

Question 8

The pressure switch controlling the action of a control relay is a very common practice in control systems.&#10;A)home&#10;B)public&#10;C)industrial&#10;D)small

Accepted Answer

Pressure switches controlling the action of control relays are commonly used in industrial control systems. Pressure switches controlling the action of control relays are commonly used in industrial control systems.

Question 9

A normally open pressure switch control relay (PSCR) contact will close and to indicate a high-pressure condition.&#10;A)turn on a pilot light&#10;B)raise a warning flag&#10;C)turn on a buzzer&#10;D)send a message

Accepted Answer

A normally open pressure switch control relay (PSCR) contact will close and turn on a pilot light to indicate a high-pressure condition. A pilot light is commonly used to indicate the status of a system, and in this case, the PSCR contact will close to indicate a high-pressure condition.

Question 10

Special regulators will close the circuit at high pressure and open the circuit at low pressure.&#10;A)pilot&#10;B)delicate&#10;C)reverse-action&#10;D)reverse-operation

Accepted Answer

The answer of Special regulators will close the circuit at...

Deck 10: Pressure Switches and Regulators