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All posts related to Gate

Ashish
Shared from Fluid Mechanics and Hydraulics - 1 on Oct 05, 2020 11:10 AM

The velocity in m/s at a point in a two-dimensional flow is given as = 2y+ 3x. The equation of the streamline passing through the point is

 
xy = 6
2x + 3y = 0
3dx + 2dy = 0
3dx - 2dy = 0
Please type your answer before submitting.

The streamline equation is: vdx-udy=0 as per this equation no option matched. KINDLY RECHECK.

Greeshma
Shared from Fluid Mechanics on Aug 21, 2020 8:18 PM

In an orifice meter, if the pressure drop across the orifice is over estimated by 5%, then the percentage error in the measured flow rate is

 
- 2.47
+ 5
+ 2.47
- 5
Please type your answer before submitting.

Shouldn't the answer be 2.47 instead of -2.47? The flowrate is obviously directly proportional to the square root of pressure. Hence when pressure in over estimated, the flowrate also increases right? Pleaae correct me if i am wrong.

Arnav Padhi
Shared from GATE Mock Test - 3 (Life Sciences) on Aug 19, 2020 11:58 AM

In case of B2H6, a special bridge head structure is suggested which contains x-centred electron pair bond(s). What is the value of x?

 
1
2
3
1.5
Please type your answer before submitting.

Can u plz explain it prperly

Greeshma
Shared from Fluid Mechanics on Aug 18, 2020 6:08 PM

For laminar flow conditions, the relationship between the pressure drop (pc) across an incompressible filter cake and the specific surface area (S0) of the particles being filtered is given by which one of the following?

 
pc is proportional to S0
pc is proportional to 1/ S0
pc is proportional to S02
pc is proportional to 1/ S02
Please type your answer before submitting.

,,

Greeshma
Posted on Jul 20, 2020 9:04 PM

Direction: An ideal gas with molar heat capacity R (where R = 8.3 14 J/mol. K) is compressed adiabatically from 1 bar and 300 K to pressure P2 in a closed system. The final temperature after compression is 600 K and the mechanical efficiency of compression is 50%.

The work required for compression (in kJ/mol) is

 
3.74
6.24
7.48
12.47
Please type your answer before submitting.

Shouldn't the answer be 7.48 kJ/mol? It's given that it is a closed system and adiabatically compression is done. If it was open system, the formula for work done is the one given in the solution. I hope what I told is right. If not, please correct me.