Ceat Tyres Diploma Trainee Engineer Interview Questions and Answers

The zeroth law of thermodynamics states that if two systems are each in thermal equilibrium with a third system, then they are in thermal equilibrium with each other.

• States that if two systems are in thermal equilibrium with a third system, then they are in thermal equilibrium with each other

• Helps in defining temperature scales and measuring temperature

• Used in everyday scenarios like checking if a cup of coffee is at the same temperature as the room

The unit of power is the watt (W), which measures the rate at which work is done or energy is transferred.

• The unit of power is the watt (W)

• Power is the rate at which work is done or energy is transferred

• 1 watt is equal to 1 joule per second

• Common examples of power include light bulbs (measured in watts) and engines (measured in horsepower)

A unitless quantity is a physical quantity that does not have any units associated with it.

• Unitless quantities are often used in mathematical calculations and comparisons.

• Examples include angles (measured in radians), pure numbers (such as ratios or percentages), and constants like pi.

• Unitless quantities are dimensionless and do not require any specific units for measurement.

Fluid is a substance that flows and takes the shape of its container.

• Fluid is a state of matter that has no fixed shape and yields easily to external pressure.

• Examples of fluids include water, oil, and air.

• Fluids can be classified as liquids or gases based on their properties.

Power is the rate at which work is done or energy is transferred.

• Power is measured in watts (W)

• It is calculated as the product of voltage and current (P = V x I)

• Power can also be calculated as the rate of energy transfer (P = E / t)

• Higher power means more work can be done in a shorter amount of time