GATE Core Subject Knowledge & Technical Concepts 1

Question 1

Which law explains the relationship between voltage, current, and resistance?

Accepted Answer

Ohm's Law

Answer

Ohm's Law describes the fundamental relationship between voltage (V), current (I), and resistance (R) in an electrical circuit. It states that the current flowing through a conductor is directly proportional to the voltage across it and inversely proportional to its resistance. This relationship is mathematically expressed as V = IR, making it essential for electrical engineering and circuit analysis.

Question 2

What unit is used to measure electrical resistance?

Accepted Answer

Ohm

Answer

The Ohm (Ω) is the standard unit of electrical resistance in the International System of Units (SI). Electrical resistance quantifies how much a material opposes the flow of electric current. This unit is named after Georg Simon Ohm, who formulated the law that defines the relationship between voltage, current, and resistance.

Question 3

Which mechanical property measures a material's resistance to deformation?

Accepted Answer

Young’s Modulus

Answer

Young's Modulus, also known as the elastic modulus, is a mechanical property that measures a material's stiffness or its resistance to elastic deformation under stress. It quantifies the ratio of stress (force per unit area) to strain (proportional deformation). A higher Young's Modulus indicates a material that is more rigid and less prone to deformation under load.

Question 4

What does Bernoulli’s principle describe?

Accepted Answer

Fluid dynamics

Answer

Bernoulli's principle is a fundamental concept in fluid dynamics, which is the study of fluids in motion. It describes the inverse relationship between the speed of a fluid and its pressure or potential energy. Specifically, it states that an increase in fluid speed occurs simultaneously with a decrease in static pressure or a decrease in the fluid's potential energy, explaining phenomena like aerodynamic lift.

Question 5

Which field studies the behavior of forces on structures?

Accepted Answer

Structural mechanics

Answer

Structural mechanics is a specialized field within applied mechanics that focuses on analyzing the behavior of physical structures and their components under various loads and forces. It investigates how structures deform, experience stress, and strain to ensure their stability, strength, and rigidity. This discipline is crucial for the design and analysis of buildings, bridges, and other engineered systems.

(GATE) Graduate Aptitude Test in Engineering Practice Test

(GATE) Graduate Aptitude Test in Engineering Practice Test

GATE Core Subject Knowledge & Technical Concepts 1