Inficold Design Engineer Interview Questions and Answers

Q1. What is the cavitation problem in pumps.
Ans. 
Cavitation in pumps is the formation of vapor bubbles in the liquid being pumped due to low pressure, which can lead to damage and reduced efficiency.
• Cavitation occurs when the pressure in a pump drops below the vapor pressure of the liquid, causing bubbles to form and collapse violently.

• This can result in erosion of pump components, decreased performance, and noise.

• Common signs of cavitation include pitting on the imp...read more
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Q2. What is Net Positive Suction Head?
Ans. 
Net Positive Suction Head (NPSH) is a measure of the pressure available at the suction port of a pump.
• NPSH is important for ensuring that a pump does not cavitate, which can cause damage to the pump and decrease efficiency.

• It is calculated by subtracting the vapor pressure of the fluid from the total suction head.

• NPSH is typically provided by the pump manufacturer and must be greater than the required NPSH for the pump...read more
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Q3. How buoyancy works for a balloon if car is taking a turn?
Ans. 
Buoyancy in a balloon is not affected by the car taking a turn due to the principle of relative motion.
• Buoyancy is a force exerted by a fluid that opposes the weight of an immersed object.

• The balloon and the air inside it are both moving with the car, so the buoyant force remains constant.

• The buoyant force is determined by the displaced fluid, not the motion of the object.

• Therefore, the balloon will continue to float i...read more
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Logical reasoning based IQ test for 30 minutes.

Q1. Discussion over project completed in graduation.
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