Western Digital Firmware Developer Interview Questions and Answers

Questions related to digital and Analog electronics were asked

Q1. Questions about Thermal basics. JD also about melting point temperatures
Add your answer

Q1. Salary negotiations and joining date details
Add your answer

Q1. Questiones based on past experience and projects
Add your answer
Q2. Reason for switching the job
Add your answer
Q3. Knowledge of CAD softwares
Add your answer

Q1. What is sub cooling in air conditioning?
Ans. 
Sub cooling in air conditioning is the process of cooling the refrigerant below its saturation temperature to improve system efficiency.
• Sub cooling increases the efficiency of the air conditioning system by ensuring the refrigerant is in a liquid state before entering the expansion valve.

• It helps in preventing flash evaporation of the refrigerant, which can lead to inefficiencies in the system.

• Sub cooling is typically ...read more
Answered by AI
View 2 more answers
Q2. How is ISEER rating calculated
Ans. 
ISEER rating is calculated based on the weighted average of the cooling performance of an air conditioner under different conditions.
• ISEER = (Weighted Cooling Capacity at 100% load x 0.4) + (Weighted Cooling Capacity at 75% load x 0.2) + (Weighted Cooling Capacity at 50% load x 0.4)

• The higher the ISEER rating, the more energy efficient the air conditioner is.

• ISEER rating helps consumers compare the energy efficiency of...read more
Answered by AI
Add your answer
Q3. Draw the Refrigeration cycle
Ans. 
The refrigeration cycle is a thermodynamic cycle used in refrigerators and air conditioning systems to transfer heat from a low temperature to a high temperature environment.
• The cycle consists of four main components: compressor, condenser, expansion valve, and evaporator.

• The refrigerant enters the compressor as a low-pressure gas and leaves as a high-pressure, high-temperature gas.

• The high-pressure gas then flows into...read more
Answered by AI
Add your answer
Q4. Mainstream refrigerants used in household air conditioning
Ans. 
Mainstream refrigerants used in household air conditioning include R-410A, R-22, and R-134a.
• R-410A is a popular refrigerant known for its high efficiency and environmental friendliness.

• R-22, although being phased out due to its ozone-depleting properties, is still commonly found in older air conditioning systems.

• R-134a is commonly used in automotive air conditioning systems but can also be found in some household units
Answered by AI
View 1 more answer
Q5. Explain 1 ton cooling concept
Ans. 
1 ton cooling concept refers to the amount of heat required to melt one ton of ice in a 24-hour period.
• 1 ton of cooling is equal to 12,000 BTUs per hour

• It is commonly used in the HVAC industry to measure the cooling capacity of air conditioning systems

• For example, a 2-ton air conditioner can remove 24,000 BTUs of heat per hour
Answered by AI
Add your answer
Q6. Relation between current, voltage and power
Ans. 
The relationship between current, voltage, and power is described by Ohm's Law, which states that current is directly proportional to voltage and inversely proportional to resistance.
• Ohm's Law states that V = I * R, where V is voltage, I is current, and R is resistance.

• Power (P) is calculated using the formula P = V * I, where P is power, V is voltage, and I is current.

• In a circuit with a constant resistance, an increa...read more
Answered by AI
Add your answer
Q7. Conversion from BTU to watts and vice versa
Ans. 
1 BTU is approximately equal to 0.29307107 watts. To convert BTU to watts, multiply by 0.29307107. To convert watts to BTU, divide by 0.29307107.
• 1 BTU = 0.29307107 watts

• To convert BTU to watts, multiply by 0.29307107

• To convert watts to BTU, divide by 0.29307107
Answered by AI
Add your answer

Q1. No questions just test
Add your answer

Q1. Would you be comfortable to regularly work extra hours?
Add your answer
Q2. Introduction about yourself?
Add your answer
Q3. Why do you want to join LG/ consumer durable industry?
Add your answer
Q4. If your manager and colleagues are busy with work , how will you manage to learn the things from them?
Add your answer
Q5. Present Salary and expected salary
Add your answer

Q1. Past experience and salary exp.
Add your answer

Q1. Kpi and past exp disc.
Add your answer

They ask to many technical question and ask to code also

They ask for your background and thing you learnt in your past