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Which of the following assumptions are made for deriving Bernoulli'sequation? 
1. Flow is steady and incompressible
2. Flow is unsteady and compressible
3. Effect of friction is neglected and flow is along a stream line.
4. Effect of friction is taken into consideration and flow is along astream line.
Select the correct answer using the codes given below:
  • a)
    1 and 3
  • b)
    2 and 3
  • c)
    1 and 4
  • d)
    2 and 4
Correct answer is option 'A'. Can you explain this answer?
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Which of the following assumptions are made for deriving Bernoulli'...
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Which of the following assumptions are made for deriving Bernoulli'...
To derive the Bernoulli's equation, certain assumptions need to be made. Let's go through each option and determine which assumptions are correct.

1. Flow is steady and incompressible:
- This assumption is valid because Bernoulli's equation is derived for steady flow, where the velocity and pressure do not change with time.
- Incompressibility assumption is also valid because Bernoulli's equation assumes that the fluid density is constant.

2. Flow is unsteady and compressible:
- This assumption is incorrect because Bernoulli's equation is specifically derived for steady flow conditions.
- Unsteady flow means that the velocity and pressure vary with time, which is not considered in Bernoulli's equation.
- Compressibility assumption is also incorrect because Bernoulli's equation assumes incompressible flow.

3. Effect of friction is neglected and flow is along a streamline:
- This assumption is valid because Bernoulli's equation assumes no energy losses due to friction and neglects viscosity effects.
- Flow along a streamline means that the flow is smooth and without any eddies or swirls.

4. Effect of friction is taken into consideration and flow is along a streamline:
- This assumption is incorrect because Bernoulli's equation assumes frictionless flow and neglects viscosity effects.
- Taking friction into consideration would require modifications to the equation, such as the Darcy-Weisbach equation or the Colebrook-White equation.

Based on the above analysis, the correct assumptions for deriving Bernoulli's equation are:
- Flow is steady and incompressible (Option 1)
- Effect of friction is neglected and flow is along a streamline (Option 3)

Therefore, the correct answer is option 'A' (1 and 3).
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Which of the following assumptions are made for deriving Bernoulli'...
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Which of the following assumptions are made for deriving Bernoulli'sequation?1. Flow is steady and incompressible2. Flow is unsteady and compressible3. Effect of friction is neglected and flow is along a stream line.4. Effect of friction is taken into consideration and flow is along astream line.Select the correct answer using the codes given below:a)1 and 3b)2 and 3c)1 and 4d)2 and 4Correct answer is option 'A'. Can you explain this answer?
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Which of the following assumptions are made for deriving Bernoulli'sequation?1. Flow is steady and incompressible2. Flow is unsteady and compressible3. Effect of friction is neglected and flow is along a stream line.4. Effect of friction is taken into consideration and flow is along astream line.Select the correct answer using the codes given below:a)1 and 3b)2 and 3c)1 and 4d)2 and 4Correct answer is option 'A'. Can you explain this answer? for Mechanical Engineering 2024 is part of Mechanical Engineering preparation. The Question and answers have been prepared according to the Mechanical Engineering exam syllabus. Information about Which of the following assumptions are made for deriving Bernoulli'sequation?1. Flow is steady and incompressible2. Flow is unsteady and compressible3. Effect of friction is neglected and flow is along a stream line.4. Effect of friction is taken into consideration and flow is along astream line.Select the correct answer using the codes given below:a)1 and 3b)2 and 3c)1 and 4d)2 and 4Correct answer is option 'A'. Can you explain this answer? covers all topics & solutions for Mechanical Engineering 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following assumptions are made for deriving Bernoulli'sequation?1. Flow is steady and incompressible2. Flow is unsteady and compressible3. Effect of friction is neglected and flow is along a stream line.4. Effect of friction is taken into consideration and flow is along astream line.Select the correct answer using the codes given below:a)1 and 3b)2 and 3c)1 and 4d)2 and 4Correct answer is option 'A'. Can you explain this answer?.
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