CBSE Class 12 Engineering Science Sample Question Papers 2026

Thermodynamics involves studying heat and energy transfer processes. It plays a critical role in designing engines, refrigerators, and heating systems by helping engineers understand how energy systems operate efficiently.

Bernoulli’s principle states that as the speed of a fluid increases, its pressure decreases. This principle helps explain how aeroplanes achieve lift and why shower curtains move inward when water flows from the showerhead.

Vectors are quantities that have both magnitude and direction, such as velocity or force. Scalars have only magnitude without direction, such as temperature or mass.

Hooke’s Law describes how materials deform under stress within their elastic limit. It is crucial for predicting material behaviour under various forces, aiding in design and safety assessments.

AC changes direction periodically while DC flows consistently in one direction. AC is commonly used for power supply because it can be easily transformed to different voltages; DC is typically used in battery-powered devices.