Fluid Mechanics & Thermal Sciences [GATE (Graduate Aptitude Test in Engineering) Mechanical Engineering]: Questions 64 - 67 of 77

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Question 64

Fluid Mechanics & Thermal Sciences
Radiative Heat Transfer

Appeared in Year: 2020

Question

Numeric Answer▾

The spectral distribution of radiation from a black body at K has a maximum at wavelength . The body cools down to a temperature . If the wavelength corresponding to the maximum of the spectral distribution at is 1.2 times of the original wavelength , then the temperature is ________ K (round off to the nearest integer) .

Question 65

Fluid Mechanics & Thermal Sciences
Differential Equations of Continuity and Momentum

Appeared in Year: 2021

Question

MCQ▾

For a two – dimensional, incompressible flow having velocity components u an v in the x & y direction respectively, the expression,

Can be simplified to (February Shift 2)

Choices

Choice (4)Response

a.

b.

c.

d.

Question 66

Fluid Mechanics & Thermal Sciences
First and Second Laws of Thermodynamics

Appeared in Year: 2019

Question

MCQ▾

During a non-flow thermodynamic process (1 - 2) executed by a perfect gas, the heat interaction is equal to the work interaction when the process is

Choices

Choice (4)Response

a.

Isentropic

b.

Isothermal

c.

Polytropic

d.

Adiabatic

Question 67

Fluid Mechanics & Thermal Sciences
Turbulent Flow

Appeared in Year: 2020

Question

MCQ▾

A circular disk of radius r is confirmed to roll without slipping at P and Q as shown in the figure.

A Circular Disk of Radius R

If the plates have velocities as shown, the magnitude of the angular velocity of the disk is

Choices

Choice (4)Response

a.

b.

c.

d.

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