Question 1

Remote control is accomplished by running control wire(s) between the valve and a control device.&#10;A)a single&#10;B)two pairs of&#10;C)a thin&#10;D)a single pair of

Accepted Answer

Remote control is typically accomplished by running a single pair of control wires between the valve and a control device. Typically, remote control is achieved by running a single pair of wires between the valve and a control device. This setup allows for the control device to send signals to the valve to open, close, or modulate. While it is possible to use other types of wires or multiple pairs of wires, a single pair is usually sufficient and most commonly used.

Question 2

The armature is made from a high-grade copper.

Accepted Answer

The armature in electric motors and generators is typically made from laminated iron or steel to enhance magnetic properties, not copper. Copper is used for the windings due to its excellent electrical conductivity.

Question 3

Two-way solenoid valves can be used to control water, oil, and airflow.

Accepted Answer

Two-way solenoid valves can be used to control various types of fluids and gases, including water, oil, and airflow. Two-way solenoid valves can be used to control water, oil, and airflow.

Question 4

The armature is also known as plunger.

Accepted Answer

The armature is the rotating part of an electric motor or generator, while the plunger is a movable part in a solenoid or other electromagnetic device.

Question 5

Valves are mechanical devices designed to control the flow of fluids.

Accepted Answer

Valves are indeed mechanical devices that are used to regulate the flow of fluids such as liquids, gases, or even slurries. They work by opening, closing, or partially obstructing different passageways to manage the flow of the fluid through the system. Valves are used in a wide range of applications, including plumbing, heating and cooling systems, water treatment plants, oil and gas pipelines, and many others. Valves are indeed mechanical devices designed to control the flow of fluids.

Question 6

A solenoid valve is a combination of three basic units.

Accepted Answer

A solenoid valve is actually a combination of two basic units: a solenoid (an electromechanical device that converts electrical energy into mechanical movement) and a valve (a device that controls the flow of fluids).

Question 7

A solenoid valve operates when current is applied to the .&#10;A)plunger&#10;B)solenoid&#10;C)core&#10;D)armature

Accepted Answer

A solenoid valve operates when an electric current is applied to its solenoid, which creates a magnetic field that moves the valve's plunger or armature. The solenoid is essentially an electromagnet that activates the valve. The core may be involved in directing the magnetic field, but it is not the primary component that is energized by the electrical current. The solenoid valve is named after the solenoid, which is an electromagnet that’s activated when current is applied, creating a magnetic field that pulls the valve’s plunger or armature. The plunger or armature is responsible for opening and closing the valve, thus controlling the flow of fluid or gas. However, the solenoid is the component that is directly activated by the current, making option B the correct answer.

Question 8

The tightness of a two-way solenoid valve depends to a degree on pressure acting downward on the .&#10;A)sealing disc&#10;B)spring&#10;C)retainer&#10;D)stem

Accepted Answer

The sealing disc is responsible for creating a tight seal in a solenoid valve. Pressure acting downward on the sealing disc helps to ensure that the seal remains tight and prevents any leakage when the valve is closed. The spring, retainer, and stem may also contribute to the valve's tightness, but pressure on the sealing disc is the most significant factor. The sealing disc is the part of the valve that is responsible for preventing leakage when the valve is closed. The tightness of the valve depends on how well the sealing disc is able to make a seal with the valve seat. The pressure acting downward on the sealing disc helps to ensure that the seal is tight and reduces the likelihood of any leaks. Therefore, option A is the correct answer.

Question 9

A solenoid valve is opened or closed by the movement of the .&#10;A)solenoid&#10;B)electromagnet&#10;C)magnetic plunger&#10;D)valve

Accepted Answer

A solenoid valve is opened or closed by the movement of a magnetic plunger. When an electrical current is applied to the solenoid, it creates a magnetic field that pulls the plunger in, which in turn opens or closes the valve. So, the correct choice is C) magnetic plunger. The solenoid valve is operated by the movement of the magnetic plunger which is a core inside the solenoid coil. As the coil is energized, it generates a magnetic field that pulls the plunger into the coil, causing the valve to open. As the coil is de-energized, the magnetic field collapses and the plunger is forced out by a spring, causing the valve to close. Therefore, option C, "magnetic plunger" is the best choice.

Question 10

Standard applications of solenoid valves generally require that the valve be mounted the piping with the inlet and outlet connections directly opposite each other.&#10;A)directly in line in&#10;B)perpendicular to each other on&#10;C)at opposite ends of&#10;D)above and below

Accepted Answer

Solenoid valves are generally mounted directly in line in the piping with the inlet and outlet connections directly opposite each other to ensure smooth and efficient flow of fluids. Solenoid valves should be mounted directly in line with the piping to ensure that the inlet and outlet connections are directly opposite each other for proper function.

Deck 15: Solenoid Valves