PGP Glass Diploma Trainee Engineer Interview Questions, Process, and Tips

Different types of heat transfer include conduction, convection, and radiation.

• Conduction: Heat transfer through direct contact between particles. Example: Touching a hot stove.

• Convection: Heat transfer through the movement of fluids (liquids or gases). Example: Boiling water.

• Radiation: Heat transfer through electromagnetic waves. Example: Feeling the warmth of the sun.

Entropy is a measure of disorder or randomness in a system.

• Entropy is a thermodynamic property that quantifies the amount of energy in a physical system that is not available to do work.

• It is a measure of the number of possible arrangements of the particles in a system.

• Entropy tends to increase in closed systems over time, leading to a state of maximum disorder.

• An example of entropy is the melting of ice into water, wh...read more

Major specifications to consider when buying an AC include cooling capacity, energy efficiency, noise level, and brand reputation.

• Cooling capacity measured in BTUs or tons

• Energy efficiency rating like EER or SEER

• Noise level in decibels

• Brand reputation for reliability and customer service

Laws of Thermodynamics explain the behavior of energy in a system.

• First Law: Energy cannot be created or destroyed, only transferred or converted. Example: A car engine converts fuel (chemical energy) into motion (kinetic energy).

• Second Law: Entropy in a closed system always increases, meaning energy tends to disperse. Example: Ice melting into water due to an increase in entropy.

• Third Law: As temperature approaches ab...read more

Backward stroke is the return stroke of the ram in shaping machine, while forward stroke is the cutting stroke.

• Backward stroke is when the ram moves away from the workpiece

• Forward stroke is when the ram moves towards the workpiece to make the cut

• Backward stroke is non-cutting, while forward stroke is cutting

• Backward stroke allows the tool to clear the workpiece, while forward stroke performs the cutting operation