Civil Engineering - Hydraulics - Discussion


The dimensionless parameter not applicable to flowing liquids, is

[A]. Reynold number
[B]. Weber number
[C]. Pressure coefficient
[D]. Kinematic viscosity
[E]. Friction factor.

Answer: Option D


No answer description available for this question.

Ankit said: (Aug 4, 2016)  
Kinematic viscosity has dim of cm2/sec, so how it is dimension less parameter?

Thiru said: (Sep 23, 2016)  
I think the answer is E, Other Parameters have Dimension.

Nanak said: (Dec 12, 2016)  
Why the answer is D.

Chhaya said: (Mar 22, 2017)  
Friction Factor is only Dimension less.

Mahesh Sinh said: (Apr 8, 2017)  
The kinematic viscosity is dimension less.

Rahul Jha said: (Apr 30, 2017)  
Only kinematic viscosity has dimensions.

Vishwas said: (May 25, 2017)  
Option D is correct. Kinematic viscosity is dimensionless.

Harshad said: (Jun 23, 2017)  
Answer Should be B, because weber no is related to surface tension, not related to flowing fluids.

Prashant said: (Jul 4, 2017)  
Yes, you are correct @Harshad.

Roy said: (Nov 24, 2017)  
Only pressure coefficient is dimensionless here.

Raj said: (Dec 14, 2017)  
As per my knowledge, dimensionless parameter not applicable to flowing liquids. But kinematic viscosity has dimension so except kinematic viscosity dimensionless parameter application for all option.

Correct answer is D.

Sunny said: (Jan 19, 2018)  
Answer is c (pressure coefficient).

Palke said: (Sep 27, 2018)  
Kinetic viscosity has dimension (cm^2/s).

Pavi said: (Feb 25, 2019)  
Option D is right, all are dimensions less except viscosity.

Salahuddin said: (Aug 15, 2019)  
It's a pressure coefficient.

Priyanka said: (Aug 16, 2019)  
Right @Pavi.

Shubham said: (Jan 10, 2020)  
The correct Answer is C.

Amitshradha said: (Jan 13, 2020)  
The correct answer is pressure coefficient.

Pummy Jain said: (Mar 25, 2020)  
The answer will be B.

As all other parameters, we use in fluid flowing.

Reynolds num, pressure coefficient in flow chart, friction factor in headless, kinematic viscosity ney and also all parameters other than kinematic viscosity(m^2/sec) are dimensionless.

Khattak said: (Apr 11, 2020)  
The answer given is right because here asked about dimensionless not applicable to, so the only option is kinematic viscosity which has unit m2/sec, all another are dimensionless.

Sudip Timalsena said: (Apr 11, 2020)  
Question clearly stated that 'DIMENSION LESS parameter NOT APPLICABLE'.

So the only option having dimension is kinematic viscosity, So, the answer is 'D'.

Pavan said: (May 10, 2020)  
How? Explain @Sudeep.

Dhenge Shahadeo said: (Mar 27, 2021)  
Option D.

Kinematics viscosity = dynamic viscosity/density.

Other options have not any unit.

It means that other dimensionless parameters.

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