The logic gate which produces a LOW output only when all its inputs are HIGH is:
1
AND
2
OR
3
NAND
4
NOR
Official Solution
Correct Option:
(3)
Step 1: Concept
Examine the truth tables of standard gates. Step 2: Analysis
An AND gate gives HIGH only when all inputs are HIGH. A NAND gate (NOT-AND) reverses this, giving LOW only when all inputs are HIGH. Step 3: Conclusion
The gate is a NAND gate. Final Answer: (C)
02
PYQ 2009
medium
physicsID: met-2009
The one which has least iodine value is
1
sunflower oil
2
ginger oil
3
ghee
4
groundnut oil
Official Solution
Correct Option:
(3)
Step 1: Concept
Iodine value is a measure of the degree of unsaturation (presence of double bonds) in fats and oils. Step 2: Analysis
High iodine value indicates more unsaturation. Low iodine value indicates higher saturation. Step 3: Comparison
Ghee is mostly composed of saturated fatty acids and has the least amount of unsaturation among the given options. Therefore, it has the least iodine value. Final Answer: (c)
03
PYQ 2015
medium
physicsID: met-2015
The following configuration of gate is equivalent to
1
NAND
2
XOR
3
OR
4
None of these
Official Solution
Correct Option:
(2)
Step 1: Understanding the Concept:
The circuit shows a combination of gates. Let's derive the output expression. Step 2: Detailed Explanation:
The given configuration has two AND gates, one OR gate, and NOT gates at inputs. Output . This is the expression for XOR gate. Step 3: Final Answer:
About Logic Gates - MET
Logic Gates is a vital chapter for MET aspirants. Mastering the concepts covered in this chapter is essential for securing a top rank.
By rigorously practicing the previous year questions associated with this chapter, you can identify high-yield topics, understand the examiner's perspective, and boost your confidence during the actual exam.
Frequently Asked Questions
Why focus on Logic Gates PYQs?
Analyzing PYQs for this specific chapter reveals the most frequently tested concepts and the typical complexity of questions, allowing you to tailor your study plan efficiently.
How to best use this analysis?
Review the topic breakdown to see which sub-topics within Logic Gates carry the most weight. Then, tackle the questions iteratively to solidify your understanding.
