Question:
In the derivation of Bernoulli's equation which of the following assumptions is not true?
In the derivation of Bernoulli's equation which of the following assumptions is not true?
Show Hint
Bernoulli's equation assumptions:
Steady, incompressible, irrotational, inviscid.
Steady, incompressible, irrotational, inviscid.
Updated On: Aug 18, 2026
- The flow is incompressible and irrotational
- The flow is steady and irrotational
- The flow is steady and viscosity is zero
- The flow is steady and viscosity is non-zero
Show Solution
Verified By Collegedunia
The Correct Option is D
Solution and Explanation
Step 1: Understanding the Concept:
Bernoulli's equation is derived under specific assumptions.
These assumptions are important for its validity.
Step 2: Key Formula or Approach:
No specific formula.
Need to know the assumptions of Bernoulli's equation.
Step 3: Detailed Explanation:
The assumptions for Bernoulli's equation are:
- Steady flow
- Incompressible flow
- Irrotational flow
- Inviscid flow (viscosity is zero)
Thus, viscosity must be zero.
So, "viscosity is non-zero" is not true.
Hence, option (D) is incorrect.
Step 4: Final Answer:
The assumption that is not true is "the flow is steady and viscosity is non-zero".
Hence, the correct option is (D).
Bernoulli's equation is derived under specific assumptions.
These assumptions are important for its validity.
Step 2: Key Formula or Approach:
No specific formula.
Need to know the assumptions of Bernoulli's equation.
Step 3: Detailed Explanation:
The assumptions for Bernoulli's equation are:
- Steady flow
- Incompressible flow
- Irrotational flow
- Inviscid flow (viscosity is zero)
Thus, viscosity must be zero.
So, "viscosity is non-zero" is not true.
Hence, option (D) is incorrect.
Step 4: Final Answer:
The assumption that is not true is "the flow is steady and viscosity is non-zero".
Hence, the correct option is (D).
Was this answer helpful?
0
0
Top ICAR AIEEA Dairy Technology Questions
- As per legal standards (FSSR, 2011), the acidity (%LA) of chakka should not be more than:
- Which of the following food additive is permitted as preservative in paneer?
- Given below are four statements:
Statement (I) : Homogenisation breaks down fat globules in milk into smaller entities.
Statement (II) : Homogenisation breaks down fat globules and casein micelles in milk into smaller entities.
Statement (III) : Homogenisation slightly increases viscosity of milk.
Statement (IV) : Homogenisation improves the appearance of milk.
In light of the above statements, choose the most appropriate answer from the options given below. - With regard to temperature of operation, place the following unit operations in sequence in an increasing order of temperature:
(i) Sterilisation
(ii) Thermisation
(iii) Homogenisation
(iv) Bactofugation and
(v) HTST pasteurization.
Choose the correct answer from the options given below : - “Narampak” and “karapak” refer to varieties of sandesh with reference to which of the following parameters ?
View More Questions
Top ICAR AIEEA Heat Transfer and Unit Operations Questions
- With regard to temperature of operation, place the following unit operations in sequence in an increasing order of temperature:
(i) Sterilisation
(ii) Thermisation
(iii) Homogenisation
(iv) Bactofugation and
(v) HTST pasteurization.
Choose the correct answer from the options given below : - Match List-I with List-II
\begin{tabular{ll} List-I (Name of Process) & List-II (Temperature/time)
(A) Pasteurization & (I) \(60\ ^\circ\text{C}\) no hold
(B) Sterilisation & (II) \(55-60\ ^\circ\text{C}\) no hold
(C) Homogenisation & (III) \(72\ ^\circ\text{C}\) 15 sec
(D) Bactofugation & (IV) \(118\ ^\circ\text{C}\) 15min
Choose the correct answer from the options given below : - In falling film milk evaporator, the temperature difference between milk and steam should be approximately around :
- Indirect UHT treatment can be done using which of the following methods ?
- Which of the following value is related to sterilization process ?
View More Questions
Top ICAR AIEEA Questions
- Which of the following statements is false?
- Which of the following is an example of an inventory?
- According to Adam Smith, productivity gains could be brought about through .
- The supply curve for an artificially scarce good is .
- Which of the following would not be considered an opportunity cost of paid employment?
View More Questions