Module 1 - Output Devices

The correct answer is solenoid because a solenoid is an electromechanical device that converts electrical energy into linear motion. It is commonly used in various applications such as valves, locks, and relays. The picture shown here resembles a solenoid, with its cylindrical shape and wires wrapped around it. The other options, motor, fan, and switch, do not accurately match the image provided.

A buzzer is an electronic device that is designed to produce sound when an electric current is passed through it. Therefore, it is used as an output device to generate sound. This statement is true because a buzzer is indeed used to get sound as an output.

The device shown in the question is an output device. This can be inferred because an output device is any device that receives data from a computer and displays or presents it to the user. Since the device in the question is shown, it is likely that it is being used to display or present information, making it an output device.

The statement is true because motors are devices that convert electrical energy into mechanical energy, causing rotational motion. Motors typically consist of a rotor (the rotating part) and a stator (the stationary part), and they work based on the principle of electromagnetic induction. When an electric current is passed through the motor's coils, it creates a magnetic field that interacts with the magnetic field of the permanent magnets in the motor, causing the rotor to rotate. Therefore, motors are commonly used in various applications where rotational motion is required, such as in electric fans, washing machines, and vehicles.

The device shown in the question is an output device because it is used to display or present information to the user. Input devices are used to provide data or instructions to a computer, power supplies provide electrical power to devices, and conductors are materials that allow the flow of electricity.

The statement is stating that the resistor is made of carbon material. This means that the resistor is most likely a carbon resistor, which is a common type of resistor used in electronic circuits. Carbon resistors are made by mixing carbon powder with a binder material and then shaping it into a cylindrical form. The carbon material provides the resistance to the flow of electric current. Therefore, the statement is true.

A resistive element is the correct answer because it refers to a component that has resistance to the flow of electric current. In the context of a glass bulb, a resistive element could be a filament or a wire that produces heat and light when an electric current passes through it. This element is commonly found in incandescent light bulbs and is responsible for producing the illumination.

When current is passed through a solenoid, it generates a magnetic field. This magnetic field causes the solenoid to behave like a magnet, with a north and south pole. This property of solenoids is used in various applications such as electromagnets, transformers, and inductors. Therefore, the statement "When current is passed through a solenoid, it turns into a magnet" is true.

The given statement is false. Solenoids do not make circular mechanical motion. A solenoid is an electrical device that converts electrical energy into linear mechanical motion. It consists of a coil of wire that generates a magnetic field when an electric current passes through it. This magnetic field causes a plunger or armature to move linearly within the solenoid. Therefore, solenoids produce linear motion, not circular motion.

A resistor is used in an electric circuit to limit the electric current. It does this by providing resistance to the flow of current, which helps to regulate and control the amount of current flowing through the circuit. By limiting the current, resistors help to protect other components in the circuit from damage due to excessive current flow.