A spray pipe has a cylindrical tube of radius . It has small holes of radius at one end. The liquid flows through the tube with velocity . The velocity of the liquid through the holes is
1
2
3
4
Official Solution
Correct Option:
(1)
Step 1: Applying equation of continuity. For incompressible flow, volume flow rate remains constant.
Step 2: Area of the tube.
Step 3: Total area of the holes. Each hole has area . For holes:
Step 4: Substituting in continuity equation.
Step 5: Solving for velocity through holes.
Step 6: Conclusion. The velocity of liquid through the holes is .
02
PYQ 2020
medium
physicsID: mht-cet-
In Boolean algebra the output and the inputs and are related as . The logic gate corresponding to this equation is
1
NOT
2
AND
3
OR
4
NAND
Official Solution
Correct Option:
(4)
Step 1: Understanding the equation. The given equation is , which is the negation of the AND operation between and . Step 2: Identify the corresponding logic gate. The logic gate that performs the negation of the AND operation is the NAND gate. The NAND gate outputs 1 when at least one of its inputs is 0, and it outputs 0 only when both inputs are 1. Step 3: Conclusion. Thus, the logic gate corresponding to is the NAND gate, which corresponds to option (D).
03
PYQ 2020
medium
physicsID: mht-cet-
Logic circuit shows the inputs , and . The output is ‘0’ (zero) when
1
2
3
4
Official Solution
Correct Option:
(3)
Step 1: Identify the logic gates. From the circuit diagram: - Input passes through a NOT gate. - Inputs and pass through a NAND gate. - Outputs of NOT and NAND gates are connected to an OR gate. Step 2: Write expressions for each gate output. Output of NOT gate: Output of NAND gate: Step 3: Write the final output expression. Step 4: Check option (C). For :
About Digital Electronic Basics - MHT-CET
Digital Electronic Basics is a vital chapter for MHT-CET 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 Digital Electronic Basics 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 Digital Electronic Basics carry the most weight. Then, tackle the questions iteratively to solidify your understanding.
