HSC 2026 ELECTRONICS 1 MOST IMPORTANT QUESTIONS CHAPTER 2 POWER SUPPLIES

HSC 2026 ELECTRONICS 1 MOST IMPORTANT QUESTIONS 

CHAPTER 2 POWER SUPPLIES

1. EXPLAIN CHARACTERISTICS OF POWER SUPPLY

2. DRAW BLOCK DIAGRAM OF REGULATED POWER SUPPLY WITH FUNCTION OF        EACH BLOCK

3. COMPARE HALFWAVE AND FULLWAVE RECTIFIER

4. WORKING OF CENTERTAP FULL WAVE RECTIFIER

5. WORKING OF HALFWAVE RECTIFIER

6. ADVANTAGES OF BRIDGE RECTIFIER OVER CENTERTAP RECTIFIER

7. WORKING OF VOLTAGE RECTIFIER USING ZENER DIODE

8. EXPLAIN LINE AND LOAD REGULATION AND RIPPLE REJECTION

9. EXPLAIN 3 TERMINAL IC VOLATAGE REGULATOR WITH ADVANTAGES

10. EXPLAIN TRANSISTORISED SERIES VOLTAGE REGULATOR

11. EXPLAIN VOLTAGE REGULATOR USING SERIES PASS TRANSISTOR

12. EXPLAIN 3 TERMINAL FIXED VOLTAGE REGULATOR

13. USE OF LM 317 AS ADJUSTABLE VOLTAGE REGULATOR 

14. WORKING OF INDUCTOR INPUT FILTER 

15. WORKING OF RC FILTER FOR REDUCING RIPPLE

16. WORKING OF RC AND LC FILTERS

17. WORKING OF RC FILTERS WITH ITS DISADVANTAGES

18. WORKING OF SMPS WITH BLOCK DIAGRAM 

19. EXPLAIN BASIC IDEA OF SWITCHED MODE POWER SUPPLY. 

HSC 2026 ELECTRONICS 1 MOST IMPORTANT QUESTIONS CHAPTER 1 INSTRUMENTS

HSC 2026 ELECTRONICS 1 MOST IMPORTANT QUESTIONS 

CHAPTER 1 INSTRUMENTS

1. DRAW NEAT DIAGRAM OF CRT AND EXPLAIN EACH ELECTRODE IN IT 

2. EXPLAIN ELECTROSTATIC FOCUSSING SYSTEM OF CRT 

3. TYPES OF DEFLECTION SYSTEM IN CRT

4. USE OF AQUADAG COATING IN CRT

5. WRITE A SHORT NOTE ON SCREENS

6. BLOCK DIAGRAM OF CRO WITH FUNCTION OF EACH BLOCK

7. STATE AND GIVE USES OF ALL CONTROLS OF CRO

8. FUNCTION OF DELAY LINE AND BLANKING CIRCUIT IN CRO

9. EXPLAIN USE OF CRO FOR FREQUENCY, PHASE 

10. EXPLAIN USE OF CRO FOR LISSJAOUS FIGURES

11. EXPLAIN HOW CRO DISPLAYS A WAVEFORM

12. EXPLAIN USE OF CRO FOR MEASUREMENT OF AC & DC VOLTAGE

13. STATE ANY 6 APPLICATIONS OF CRO

14. EXPLAIN WORKING OF FUNCTION GENERATOR WITH NEAT DIAGRAM

15. EXPLAIN WORKING OF TIME BASE GENERATOR WITH DIAGRAM

16. EXPLAIN DMM WITH A NEAT DIAGRAM WITH FUNCTION OF EACH BLOCK

17. ADVANTAGES OF DMM OVER ANALOG MULTIMETER 

HSC 2026 ELECTRONICS 2 MOST EXPECTED QUESTIONS

HSC 2026 ELECTRONICS 2 MOST EXPECTED QUESTIONS

CHAPTER 1 CLICK HERE 👈👈👈

CHAPTER 2 CLICK HERE 👈👈👈

CHAPTER 3 CLICK HERE 👈👈👈

CHAPTER 4 CLICK HERE 👈👈👈

CHAPTER 5 CLICK HERE 👈👈👈

CHAPTER 6 CLICK HERE 👈👈👈

CHAPTER 7 CLICK HERE 👈👈👈

HSC 2026 ELECTRONICS 2 MOST IMPORTANT QUESTIONS CHAPTER 7 COMPUTER FUNDAMENTALS

HSC 2026 ELECTRONICS 2 MOST IMPORTANT QUESTIONS CHAPTER 7 

COMPUTER FUNDAMENTALS

1. BLOCK DIAGRAM OF DIGITAL COMPUTER WITH FUNCTION OF EACH BLOCK.

2. EXPLAIN ALL INPUT DEVICES OF COMPUTER.

3. WRITE A NOTE ON CPU.

4. EXPLAIN ALL OUTPUT DEVICES OF DIGITAL COMPUTER

5. EXPLAIN ADDRESS BUS ,DATA BUS ,CONTROL BUS 

6. EXPLAIN COM , PLOTTER ,IMPACT & NON IMPACT PRINTER

7. EXPLAIN RAM ,ROM, EPROM , EEPROM 

8. EXPLAIN SEMICONDUCTOR MEMORIES

9. EXPLAIN PRIMARY AND SECONDARY MEMORY.

HSC 2026 ELECTRONICS 2 MOST IMPORTANT QUESTIONS CHAPTER 6 A/D & D/A CONVERTERS

HSC 2026 ELECTRONICS 2 MOST IMPORTANT QUESTIONS CHAPTER 6 

A/D & D/A CONVERTERS

1. EXPLAIN COUNTER TYPE A/D CONVERTER

2. NEED OF A/D AND D/A CONVERTER

3. EXPLAIN SIMULTANEOUS TYPE A/D WITH DIAGRAM AND TRUTH TABLE

4. EXPLAIN SUCCESSIVE APPROXIMATION TYPE A/D CONVERTER

5. EXPLAIN WORKING OF WEIGHTED TYPE RESISTOR D/A CONVERTOR AND  WRITE ITS DISADVANTAGES

6. EXPLAIN WORKING OF R2R LADDER TYPE D/A CONVERTER

7. COMPARE WEIGHTED TYPE AND R2R D/A CONVERTER

8 .EXPLAIN 4 BIT R2R LADDER WITH EXPRESSION FOR O/P VOLTAGE

  

HSC 2026 ELECTRONICS 2 MOST IMPORTANT QUESTIONS CHAPTER 5 FLIPFLOP COUNTERS REGISTERS

HSC 2026 ELECTRONICS 2 MOST IMPORTANT QUESTIONS CHAPTER 5 

FLIPFLOP COUNTERS REGISTERS

1. EXPLAIN WORKING OF CLOCKED D FLIP FLOP

2. WORKING OF RS FLIP FLOP USING NAND GATES 

3. WORKING OF MASTER SLAVE JK FLIP FLOP.

4. EXPLAIN PRESET AND CLEAR IN FLIP FLOP.

5. EXPLAIN T FLIP FLOP.

6. WHAT IS TOGGLING 

7. WHAT IS MODULUS OF A COUNTER

8. HOW MANY FLIPFLOP ARE REQUIRED TO CONSTRUCT MOD 8,16,32 COUNTERS

9. WORKING OF 3 BIT SYNCHRONOUS COUNTER

10. WORKING OF MOD 16 ASYNCHRONOUS COUNTER

11. COMPARE SYNCHRONOUS AND ASYNCHRONOUS COUNTERS

12. WORKING OF RING COUNTER

13. EXPLAIN 3 BIT RIPPLE COUNTER

14. EXPLAIN DECADE COUNTER

15. WHAT IS PARALLEL COUNTER

16. EXPLAIN WORKING OF 4 BIT RIGHT SHIFT REGISTER

17. EXPLAIN WORKING OF 4 BIT LEFT SHIFT REGISTER

18. EXPLAIN CONCEPT OF 1 BIT MEMORY CELL .

HSC 2026 ELECTRONICS 2 MOST IMPORTANT QUESTIONS CHAPTER 4 MULTIPLEXERS

HSC 2026 ELECTRONICS 2 MOST IMPORTANT QUESTIONS

CHAPTER 4 MULTIPLEXERS

1. EXPLAIN 1:4 DEMULTIPLEXER WITH DIAGRAM AND TRUTH TABLE

2. EXPLAIN 4:1 MULTIPLEXER WITH DIAGRAM AND TRUTH TABLE

3. APPLICATIONS OF DEMULTIPLEXER

4. IMPLEMENT F(A,B,C) = M(2,4,5,7) USING MULTIPLEXER.

5. CONSTRUCT 16:1 MULTIPLEXER USING TWO 8:1 MULTIPLEXER.

6. ADVANTAGES OF MULTIPLEXER

7. COMPARE MULTIPLEXER AND DEMULTIPLEXER.

8. CONSTRUCT 4:1 MULTIPLEXER USING TWO 2:1 MULTIPLEXER.

9. WHAT IS DECODER EXPLAIN BCD TO DECIMAL DECODER

10. EXPLAIN BCD TO 7 SEGMENT DISPLAY USING IC 746

11. EXPLAIN BCD ENCODER

12. EXPLAIN ENCODER AND PRIORITY ENCODER.

13. EXPLAIN DECIMAL TO BCD ENCODER.

14. EXPLAIN BCD ENCODER USING 4 OR GATES.

HSC 2026 ELECTRONICS 2 MOST IMPORTANT QUESTIONS CHAPTER 3 LOGIC FAMILIES & IC

HSC 2026 ELECTRONICS 2 MOST IMPORTANT QUESTIONS

CHAPTER 3 LOGIC FAMILIES & IC

1. EXPLAIN TTL NOR GATE

2. EXPLAIN CMOS NOR GATE

3. EXPLAIN OPEN COLLECTOR  TTL NAND GATE

4. EXPLAIN TTL NAND GATE 

5. EXPLAIN CMOS INVERTER WITH DIAGRAM AND TRUTH TABLE

6. EXPLAIN TSL INVERTER CIRCUIT

7. EXPLAIN TTL INVERTER CIRCUIT

8. EXPLAIN TRI STATE LOGIC WITH DIAGRAM 

9. 4 CHARECTERISTICS OF DIGITAL IC

10. COMPARE TTL AND CMOS FAMILY

11. CLASSIFICATION OF LOGIC FAMILIES

12. EXPLAIN POWER DISSIPATION , FAN IN/OUT , NOISE MARGIN  

HSC 2026 ELECTRONICS 2 MOST IMPORTANT QUESTIONS CHAPTER 2 LOGIC GATES

HSC 2026 ELECTRONICS 2 MOST IMPORTANT QUESTIONS 

CHAPTER 2 (LOGIC GATES)

1. STATE AND PROVE DMORGANS THEOREM WITH TRUTH TABLE

2. PROVE USING BOOLEAN LAWS : A + A" B = A + B

3. EXPLAIN ALL BASIC GATES WITH DIAGRAM AND TRUTH TABLE

4. EXPLAIN NAND AND NOR GATES 

5. CONSTRUCT ALL BASIC GATES USING NAND GATE 

6. WHAT IS UNIVERSAL BUILDING BLOCK

7. COMPARE EXCLUSIVE AND INCLUSIVE OR GATE 

8. EXPLAIN 8 BIT CONTROLLED INVERTER USING EXOR GATE 

9. EXPLAIN  4 BIT  BINARY ADDER AND SUBSTRACTER 

10. EXPLAIN HALF ADDER AND FULL ADDER USING LOGIC GATES

11. EXPLAIN 4 BIT PARITY CHECKER .