PTU previous year question paper – Questions & Answers

The PTU exam is an essential step in advancing your academic journey. Understanding the previous year question papers can provide valuable insight into exam patterns, frequently asked questions, and the types of topics that often appear in the test. With this guide, you will be prepared with sample questions and answers that reflect the depth and scope of the exam. It is crucial to review various subjects to ensure you are fully ready for what the exam may hold.

Question Set for PTU Exam:

Question: What is the formula for calculating work done in physics?
Answer: The formula for calculating work done is W = F × d × cos(θ), where F is the force, d is the distance, and θ is the angle between the force and direction of movement.

Question: Explain the difference between kinetic and potential energy.
Answer: Kinetic energy is the energy possessed by an object due to its motion, while potential energy is the energy stored due to its position or configuration.

Question: Define Ohm’s Law in electrical engineering.
Answer: Ohm’s Law states that the current through a conductor between two points is directly proportional to the voltage across the two points and inversely proportional to the resistance, expressed as V = IR.

Question: What is Newton’s second law of motion?
Answer: Newton’s second law of motion states that the force acting on an object is equal to the mass of that object multiplied by its acceleration, represented as F = ma.

Question: What is the significance of Kirchhoff’s laws in electrical circuits?
Answer: Kirchhoff’s laws help in analyzing current and voltage in complex electrical circuits by providing relationships between currents and voltages at different points in the circuit.

Question: How do you calculate the area of a triangle?
Answer: The area of a triangle can be calculated using the formula A = ½ × base × height, where base is the length of the triangle’s base and height is the perpendicular distance from the base to the opposite vertex.

Question: What is the primary function of the human circulatory system?
Answer: The primary function of the human circulatory system is to transport oxygen, nutrients, hormones, and waste products throughout the body.

Question: What is the difference between DNA and RNA?
Answer: DNA is a double-stranded molecule that stores genetic information, while RNA is a single-stranded molecule that plays a role in protein synthesis.

Question: What is a capacitor and how does it work?
Answer: A capacitor is an electrical component that stores energy in the form of an electric field. It works by accumulating charge on two conductive plates separated by an insulating material.

Question: Explain the concept of force in physics.
Answer: Force is a vector quantity that causes an object to accelerate or change its motion. It is measured in newtons (N) and can be applied in various directions.

Question: What is a renewable energy source?
Answer: A renewable energy source is one that is naturally replenished, such as solar, wind, hydro, and geothermal energy.

Question: What is the role of enzymes in biological reactions?
Answer: Enzymes act as catalysts in biological reactions, speeding up the process without being consumed in the reaction.

Question: Describe the working principle of a transformer.
Answer: A transformer works on the principle of electromagnetic induction to change the voltage level in an alternating current (AC) circuit.

Question: What is the difference between series and parallel circuits?
Answer: In a series circuit, components are connected end-to-end, so current flows through all components. In a parallel circuit, components are connected across common points, and the current splits.

Question: What is the significance of the periodic table in chemistry?
Answer: The periodic table organizes elements based on their atomic number, electron configuration, and recurring chemical properties, which helps in understanding their behaviors.

Question: What is the difference between acids and bases in chemistry?
Answer: Acids are substances that release hydrogen ions in solution, while bases release hydroxide ions. Acids have a pH less than 7, and bases have a pH greater than 7.

Question: What is the concept of a chemical reaction?
Answer: A chemical reaction involves the transformation of one or more substances into new substances with different chemical properties, typically accompanied by the release or absorption of energy.

Question: Explain the first law of thermodynamics.
Answer: The first law of thermodynamics, also known as the law of energy conservation, states that energy cannot be created or destroyed, only transferred or converted from one form to another.

Question: How do you calculate the volume of a cylinder?
Answer: The volume of a cylinder is calculated using the formula V = πr²h, where r is the radius of the base and h is the height of the cylinder.

Question: What is the difference between qualitative and quantitative research methods?
Answer: Qualitative research focuses on understanding concepts, experiences, or phenomena, while quantitative research involves collecting and analyzing numerical data to identify patterns and correlations.

Question: Describe the structure of the atom.
Answer: An atom consists of a central nucleus containing protons and neutrons, with electrons orbiting around the nucleus in various energy levels.

Question: What are the laws of motion according to Newton?
Answer: Newton’s laws of motion describe the relationship between a body and the forces acting upon it, and the body’s motion in response to those forces.

Question: Explain the concept of energy conservation.
Answer: Energy conservation refers to the practice of using energy more efficiently and reducing waste, in accordance with the principle that energy cannot be created or destroyed, only converted from one form to another.

Preparing for the PTU exam involves reviewing various subjects and practicing questions from previous year papers. By understanding the exam pattern and studying past questions, you can improve your confidence and performance. Utilize this resource for effective preparation and stay focused on your academic goals.