20 Basic electronics questions for SS1 Third Term, along with options and answers:
Question: What is the purpose of a varistor in an electronic circuit?
A) To regulate voltage
B) To control current flow
C) To protect against voltage surges
D) To amplify signals
Answer: C) To protect against voltage surges
Question: What is the unit of frequency modulation (FM)?
A) Hertz
B) Megahertz
C) Kilohertz
D) Gigahertz
Answer: A) Hertz
Question: Which electronic component is often used as a switch in digital circuits?
A) Capacitor
B) Resistor
C) Transistor
D) Inductor
Answer: C) Transistor
Question: What is the primary function of a Schottky diode?
A) To regulate voltage
B) To control current flow
C) To amplify signals
D) To provide low forward voltage drop
Answer: D) To provide low forward voltage drop
Question: Which law states that the total power in a circuit is equal to the sum of the individual power values?
A) Ohm’s Law
B) Kirchhoff’s Current Law
C) Kirchhoff’s Voltage Law
D) Watt’s Law
Answer: D) Watt’s Law
Question: The process of converting analog signals to digital signals is called:
A) Modulation
B) Demodulation
C) Amplification
D) Analog-to-Digital Conversion (ADC)
Answer: D) Analog-to-Digital Conversion (ADC)
Question: What is the purpose of a flyback diode in a circuit?
A) To regulate voltage
B) To control current flow
C) To protect against voltage spikes in inductive loads
D) To amplify signals
Answer: C) To protect against voltage spikes in inductive loads
Question: The SI unit of magnetic field strength is:
A) Tesla
B) Gauss
C) Weber
D) Henry
Answer: A) Tesla
Question: Which type of logic gate performs the AND operation?
A) OR gate
B) AND gate
C) NOT gate
D) XOR gate
Answer: B) AND gate
Question: In digital electronics, what is the binary representation of the decimal number 10?
A) 1010
B) 1100
C) 1111
D) 1001
Answer: A) 1010
Question: What is the function of a thyristor in a circuit?
A) To regulate voltage
B) To control current flow
C) To amplify signals
D) To switch high-power loads
Answer: D) To switch high-power loads
Question: Which component is commonly used as a memory storage device in computers?
A) Transistor
B) Capacitor
C) Inductor
D) Hard Disk Drive (HDD)
Answer: D) Hard Disk Drive (HDD)
Question: What does the acronym PCB stand for in electronics?
A) Printed Circuit Board
B) Power Control Block
C) Programmable Circuit Buffer
D) Processor Control Board
Answer: A) Printed Circuit Board
Question: Which type of display technology uses organic compounds to emit light?
A) LCD (Liquid Crystal Display)
B) LED (Light Emitting Diode)
C) OLED (Organic Light Emitting Diode)
D) CRT (Cathode Ray Tube)
Answer: C) OLED (Organic Light Emitting Diode)
Question: The unit of electric power is also equal to one joule per second. What is this unit called?
A) Watt
B) Volt
C) Ampere
D) Ohm
Answer: A) Watt
Question: What is the purpose of a photoresistor in a circuit?
A) To regulate voltage
B) To control current flow
C) To vary resistance based on light intensity
D) To store charge
Answer: C) To vary resistance based on light intensity
Question: Which type of memory retains data even when the power is turned off?
A) RAM (Random Access Memory)
B) ROM (Read-Only Memory)
C) Cache Memory
D) Flash Memory
Answer: B) ROM (Read-Only Memory)
Question: What is the function of a optocoupler in electronics?
A) To regulate voltage
B) To control current flow
C) To provide electrical isolation between input and output
D) To amplify signals
Answer: C) To provide electrical isolation between input and output
Question: Which component is used to store data in binary form in digital systems?
A) Transistor
B) Capacitor
C) Flip-Flop
D) Inductor
Answer: C) Flip-Flop
Question: What is the purpose of a Hall effect sensor in electronics?
A) To regulate voltage
B) To measure magnetic fields
C) To control current flow
D) To amplify signals
Answer: B) To measure magnetic fields.
FAQs
What topics are commonly covered in SS1 third term basic electronics past questions?
The questions usually cover fundamental concepts such as Ohm’s Law, series and parallel circuits, components like resistors, capacitors, and diodes, as well as basic circuit diagrams and their analysis. Students may also encounter questions on simple electronic instruments like ammeters and voltmeters.
How can I effectively use past questions to prepare for exams?
To make the most of past questions, start by attempting them under timed conditions, then compare your answers with the provided solutions. Identify patterns in recurring question types and revise the underlying concepts. Practicing consistently helps improve both speed and accuracy in exams.
Are the answers to past questions detailed or just final solutions?
Most past question compilations provide final solutions, but some include step-by-step explanations, especially for calculations and circuit problems. Detailed solutions are useful for understanding the reasoning behind each answer and for learning problem-solving techniques.
Can solving past questions guarantee a high score in exams?
While practicing past questions improves familiarity and confidence, it does not guarantee a perfect score. Success also depends on understanding the concepts, revising theory, and developing problem-solving skills. Combining past questions with regular study is the most effective approach.
Also Read: SS1 First Term Basic Electronics Past Questions and Answers
