Universal gates (NAND, NOR) Gat MCQs

What is the symbol for the NAND gate?

A) ∧
B) ∨
C) ⊕
D) ↑
Answer: D
What is the output of a NAND gate if both inputs are HIGH (1)?

A) HIGH (1)
B) LOW (0)
C) Unknown
D) Depends on gate configuration
Answer: B
What is the symbol for the NOR gate?

A) ∧
B) ∨
C) ⊕
D) ↓
Answer: D
What is the output of a NOR gate if both inputs are LOW (0)?

A) HIGH (1)
B) LOW (0)
C) Unknown
D) Depends on gate configuration
Answer: A
Which of the following gates is considered a universal gate?

A) AND gate
B) OR gate
C) NAND gate
D) NOR gate
Answer: C
What is the output of a NAND gate if one input is LOW (0) and the other is HIGH (1)?

A) HIGH (1)
B) LOW (0)
C) Unknown
D) Depends on gate configuration
Answer: A
What is the output of a NOR gate if one input is HIGH (1) and the other is LOW (0)?

A) HIGH (1)
B) LOW (0)
C) Unknown
D) Depends on gate configuration
Answer: B
Which gate can be used to implement any logic function?

A) NAND gate
B) NOR gate
C) XOR gate
D) NOT gate
Answer: A
Which gate is also known as a universal building block in digital circuits?

A) NAND gate
B) NOR gate
C) XOR gate
D) NOT gate
Answer: B
What is the output of a NAND gate if both inputs are LOW (0)?

A) HIGH (1)
B) LOW (0)
C) Unknown
D) Depends on gate configuration
Answer: A
What is the output of a NOR gate if one input is LOW (0) and the other is HIGH (1)?

A) HIGH (1)
B) LOW (0)
C) Unknown
D) Depends on gate configuration
Answer: B
Which gate has the complement of its output equivalent to the AND gate?

A) NAND gate
B) NOR gate
C) XOR gate
D) NOT gate
Answer: A
Which gate has the complement of its output equivalent to the OR gate?

A) NAND gate
B) NOR gate
C) XOR gate
D) NOT gate
Answer: B
The output of a NAND gate is LOW (0) only when:

A) Both inputs are LOW (0)
B) Both inputs are HIGH (1)
C) One input is LOW (0) and the other is HIGH (1)
D) One input is HIGH (1) and the other is LOW (0)
Answer: B
The output of a NOR gate is HIGH (1) only when:

A) Both inputs are LOW (0)
B) Both inputs are HIGH (1)
C) One input is LOW (0) and the other is HIGH (1)
D) One input is HIGH (1) and the other is LOW (0)
Answer: A
Which gate is commonly used for simplifying logic expressions?

A) NAND gate
B) NOR gate
C) XOR gate
D) NOT gate
Answer: A
Which gate is commonly used for implementing memory devices?

A) NAND gate
B) NOR gate
C) XOR gate
D) NOT gate
Answer: B
What is the output of a NAND gate if one input is LOW (0) and the other is HIGH (1)?

A) HIGH (1)
B) LOW (0)
C) Unknown
D) Depends on gate configuration
Answer: A
What is the output of a NOR gate if one input is HIGH (1) and the other is LOW (0)?

A) HIGH (1)
B) LOW (0)
C) Unknown
D) Depends on gate configuration
Answer: B
Which gate can be used to implement any logic function, making it universal?

A) NAND gate
B) NOR gate
C) XOR gate
D) NOT gate
Answer: A

MCQs of Digital Logic Design (DLD)

Introduction to Digital Systems

1. Analog vs. Digital signals MCQs
2. Binary numbers and arithmetic MCQs
3. Logic levels and noise margins MCQs

Boolean Algebra

1. Basic logic operations (AND, OR, NOT) MCQ
2. Laws and theorems of Boolean algebra MCQ
3. De Morgan’s Theorems MCQ
4. Canonical forms (Sum of Products, Product of Sums) MCQ
5. Simplification techniques (Karnaugh Maps, Quine-McCluskey method) MCQ

Combinational Logic

Logic Gates

1. Basic gates (AND, OR, NOT) Gat MCQ
2. Universal gates (NAND, NOR) Gat MCQs
3. XOR and XNOR gates MCQ

Combinational Circuits

1. Design and analysis of combinational circuits MCQ
2. Multiplexers and Demultiplexers MCQ
3. Encoders and Decoders MCQ
4. Binary Adders (Half adder, Full adder) MCQ
5. Subtractors and Arithmetic Logic Units (ALU) MCQ
6. Comparators MCQ in DLD

Sequential Logic

Flip-Flops and Latches

1. SR Latch, D Latch MCQ
2. Flip-Flops (SR, D, JK, T) MCQ
3. Characteristic equations and excitation tables MCQ
4. Edge-triggered vs. level-triggered devices MCQ

Counters and Registers

1. Synchronous, Asynchronous (ripple), Up/Down counters MCQs
2. Shift registers (SIPO, PISO, SISO, PIPO) MCQs

State Machines

Finite State Machines (FSMs)

1. Moore and Mealy machines MCQs

Memory and Programmable Logic MCQs

Memory Devices

1. Read-Only Memory (ROM)
2. Random Access Memory (RAM)
3. Programmable Logic Devices (PLDs) MCQs
4. Field Programmable Gate Arrays (FPGAs) MCQs

More MCQs of Digital Logic Design (DLD)

• • SET 1: DLD MCQs with answers (dld mcqs with answers)
  • SET 2: DLD MCQs (dld basic mcqs)
  • SET 3: DLD MCQs (solved mcqs of dld)
  • SET 4: DLD MCQs (dld repeated mcqs)
  • SET 5: DLD MCQs (dld important mcqs)
  • SET 6:DLD MCQs DLD Solved MCQs Answers PDF

MCQs collection of solved and repeated MCQs with answers for the preparation of competitive exams, admission test and job of PPSC, FPSC, UPSC, AP, APPSC, APSC, BPSC, PSC, GOA, GPSC, HPSC, HP, JKPSC, JPSC, KPSC, KERALAPSC, MPPSC, MPSC, MPSCMANIPUR, MPSC, NPSC, OPSC, RPSC, SPSCSKM, TNPSC, TSPSC, TPSC, UPPSC, UKPSC, SPSC, KPPSC, BPSC, AJKPSC ALPSC, NPSC, LPSC, SCPSC, DPSC, DCPSC, PSC, UPSC, WVPSC, PSCW, and WPSC.