Fluid Mechanics & Thermal Sciences [GATE (Graduate Aptitude Test in Engineering) Mechanical Engineering]: Questions 14 - 17 of 77

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Question 14

Fluid Mechanics & Thermal Sciences
Fluid Properties

Appeared in Year: 2015

Question

MCQ▾

For flow through a pipe of radius R, the velocity and temperature distribution are as follows:

, and where and are constants. The bulk mean temperature is given by , with being the mean velocity of flow. The value of is ________

Choices

Choice (4)Response

a.

b.

c.

d.

Question 15

Fluid Mechanics & Thermal Sciences
Differential Equations of Continuity and Momentum

Appeared in Year: 2015

Question

Match List-Ⅰ List-Ⅱ▾

Match the following pairs

List-Ⅰ (Equation)List-Ⅱ (Physical Interpretation)
(A)

(i)

Incompressible continuity equation

(B)

(ii)

Zero acceleration of fluid particle

(C)

(iii)

Irrotational flow

(D)

(iv)

Steady flow

Choices

Choice (4)Response
  • (A)
  • (B)
  • (C)
  • (D)

a.

  • (i)
  • (iv)
  • (iii)
  • (ii)

b.

  • (ii)
  • (iii)
  • (i)
  • (iv)

c.

  • (iii)
  • (i)
  • (iv)
  • (ii)

d.

  • (i)
  • (iii)
  • (iv)
  • (ii)

Question 16

Fluid Mechanics & Thermal Sciences
Zeroth

Appeared in Year: 2015

Question

Numeric Answer▾

Temperature of nitrogen in a vessel of volume . A U-tube manometer connected to the vessel shows a reading of of mercury (level higher in the end open to atmosphere) . The universal gas constant is , atmospheric pressure is , acceleration due to gravity is and density of mercury is . The mass of nitrogen (in kg) in the vessel is

Question 17

Fluid Mechanics & Thermal Sciences
Fluid Properties

Appeared in Year: 2015

Question

Numeric Answer▾

Steam enters a well-insulated turbine and expands is entropically throughout. At an intermediate pressure, 20 percent of the mass is extracted for process heating and the remaining steam is entropically to .

Inlet to turbine: , , , Intermediate stage:

Exit of turbine: , , , ,

If the flow rate of steam entering the turbine is 100 kg/s, then the work output (in MW) is

Developed by: