Diploma Apprentice Trainee Interview Questions and Answers for Freshers

Petrol engines use spark ignition while diesel engines use compression ignition. Pulley system is a mechanism to transmit power.

• Petrol engines use petrol as fuel while diesel engines use diesel.

• Petrol engines use spark plugs to ignite the fuel while diesel engines use compression to ignite the fuel.

• Pulley system is a mechanism to transmit power from one shaft to another using a belt or chain.

• There are three types of pulleys: fixed pulley, movable pulley, and compound pulley.

AC stands for Alternating Current and DC stands for Direct Current.

• AC is an electric current that periodically reverses direction.

• DC is an electric current that flows in one direction.

• AC is commonly used in household appliances and power distribution systems.

• DC is commonly used in batteries and electronic devices.

• Examples of AC sources include generators and power grids.

• Examples of DC sources include batteries and solar panels.

The main components of AC cycle are compressor, condenser, expansion valve and evaporator.

• Compressor compresses the refrigerant gas and raises its temperature.

• Condenser cools down the refrigerant gas and converts it into a high-pressure liquid.

• Expansion valve reduces the pressure of the liquid refrigerant and converts it into a low-pressure liquid.

• Evaporator absorbs heat from the surrounding and converts the low-pressure liquid into a low-pressure gas.

• The cycle repeats as the...read more

PPM can be found by dividing the weight of solute by the weight of solution and multiplying by 10^6.

• Determine the weight of the solute and the weight of the solution.

• Divide the weight of the solute by the weight of the solution.

• Multiply the result by 10^6 to get the PPM value.

• Example: If 1 gram of solute is dissolved in 1 million grams of solution, the PPM would be 1.

• PPM stands for parts per million and is used to express the concentration of a solution.