27 Questions
What is the main purpose of a switch in an electrical circuit?
To interrupt the current flow in the circuit
What determines the brightness of an LED?
The amount of current flowing through the LED
What is the purpose of a resistor in an electronic circuit?
To control the flow of current in the circuit
What is the purpose of the color bands on a resistor?
To indicate the resistance value and tolerance of the resistor
What is the relationship between the polarity of an LED and its function?
The polarity of an LED determines the direction of current flow through it.
What is the purpose of a resistor in a circuit with an LED?
To protect the LED from damage due to excessive current
What is the key difference between mechanical and electronic switches?
Mechanical switches require physical contact, while electronic switches do not.
Which type of switch has one input contact and one output contact?
SPST switch
What is the key feature of a SPDT (Single Pole Double Throw) switch?
It has one input contact and two output contacts.
Which type of switch can be either normally open or normally closed?
SPST switch
What is the main purpose of a SPDT switch in most circuits?
To connect the input between two choices of outputs.
Which type of switch is classified based on the method of actuation?
Manual, limit, and process switches
What is the main function of a double pole single throw (DPST) switch?
To control two separate circuits simultaneously.
How many terminals does a DPST switch have?
Four
What is the main difference between a DPST switch and two separate SPST switches?
A DPST switch operates the two contacts simultaneously.
What is the state of a DPST switch when it is in the OFF position?
Both switches are open.
What is the main function of a push button switch?
To provide momentary contact when pressed.
What is the main difference between a toggle switch and an electronic switch?
Toggle switches are mechanical, while electronic switches are solid-state.
What is the primary function of a limit switch?
To detect the presence, absence, or motion of an object instead of human operation.
What is the primary purpose of a float switch?
To control the level of liquid or water in a tank or sump by detecting the float's position.
Which component is commonly used as a heat-sensing element in temperature switches?
A bimetallic strip that operates on the principle of thermal expansion.
What is the primary advantage of using a microcontroller over a microprocessor in embedded systems?
Microcontrollers require less additional hardware components.
What is the primary purpose of a breadboard in electronics?
To test ideas by developing preliminary models (prototyping).
Which of the following is an example of an active electronic component?
Transistor
What is the primary function of the Arithmetic Logical Unit (ALU) in a microprocessor?
To perform arithmetic and logic operations.
Which generation of embedded systems is known for introducing technologies like system-on-chip, reconfigurable processors, and multicore processors?
Fourth generation
What is the primary purpose of a pressure switch in industrial applications?
To sense the pressure of hydraulic systems and pneumatic devices.
Learn about LEDs (Light-Emitting Diodes) in this lesson. Understand the basics of how they work, their different types, and how to use them effectively, with a focus on polarity. Date: February 29, 2024. Format: PPT & Discussion.
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