Answer / Nirmal Jeet Kaur

Strategies for curing tube vibration and exchanger issues in a shell include using mechanical supports such as flexible connectors or expansion joints, aligning the tubesheets properly during installation, balancing the fluid flow distribution across the heat exchanger, and reducing resonant frequencies by adding mass to the system or modifying the support structure.

pleas tell me about chemical engineering apptitude test..

1 Answers   IOCL,

---

iN CONFINED SPACE ENTRY HOW MUCH OXYGEN MAY BE REQURIED

6 Answers  

---

what is isothermal process?

1 Answers   Coromandel,

---

What is the iodine value of spent carbon?How iodine value is used to determine the power of carbon to adsorb?

2 Answers  

---

Is there a handy way to determine if a horizontal pipe is running full if the flow rate is known?

1 Answers  

---

i want pattern of ONGC Written examination

13 Answers   IOCL, ONGC, Reliance,

---

Explain what are flameless oxidizers?

1 Answers  

---

What are the apt definitions for apparent power, active power and reactive power?

1 Answers  

---

What is the import procurement cycle? What are the customization steps in sap?

1 Answers  

---

MICROBIOLOGICAL ENGINEERING - QUESTION 28.1 : In the calculation of the growth of bacteria, colony forming unit (CFU) in serial dilution is used. In a laboratory, viable count assay is used to estimate CFU. Formula applied is CFU / mL = (number of colonies x dilution) / (amount plated, in unit mL). Acceptable plate count is either between 20 and 200 or between 30 and 300 according to 2 different references. A wastewater sample of 200 ml is added to and mixed with 1.8 L of sterile water. Another 200 ml of the mixture is added to and mixed with 1.8 L of sterile water. (a) Calculate the dilution of first mixture and the dilution of the second mixture. (b) 100 microlitres of wastewater samples from the first mixture and the second mixture are placed separately on 2 different alga plates. The first plate has 250 colonies and the second plate has 23 colonies. Calculate the average CFU / mL.

1 Answers  

---

After conducting an internet search for ways to reduce energy costs, I found a recipe for whitewashing that is said to reflect sunlight. The recipe calls for 20 pounds hydrated lime to 5 gallons water to 1-quart polyvinyl acetate. What is a good source of polyvinyl acetate that I can buy at a local store?

1 Answers  

---

What is the maximum permissible Earth to Neutral voltage in an electrical system.

1 Answers  

---