GATE ME topic:mechanical-engineering PYQs & Answers — Page 44

Home
GATE
Mechanical Engineering
Topics
topic:mechanical-engineering

Questions 431–440 of 1040. Imported answers require independent review unless marked reviewed.

Topic practice 1040 questionsPage 44 of 104

In which of the following pairs of cycles, both cycles have at least one isothermal process?

Your answerChoose one option.

Diesel cycle and Otto cycle

Carnot cycle and Stirling cycle

Brayton cycle and Rankine cycle

Bell-Coleman cycle and Vapour compression refrigeration cycle

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

For a two-dimensional, incompressible flow having velocity components

and

in the

and

directions, respectively, the expression

can be simplified to

Your answerChoose one option.

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

Superheated steam at 1500 kPa, has a specific volume of 2.75 m

/kmol and compressibility factor (

) of 0.95. The temperature of steam is ______°C (round off to the nearest integer).

Your answerChoose one option.

522

471

249

198

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

Which of the following is responsible for eddy viscosity (or turbulent viscosity) in a turbulent boundary layer on a flat plate?

Your answerChoose one option.

Nikuradse stresses

Reynolds stresses

Boussinesq stresses

Prandtl stresses

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

A hot steel spherical ball is suddenly dipped into a low temperature oil bath. Which of the following dimensionless parameters are required to determine instantaneous center temperature of the ball using a Heisler chart?

Your answerChoose one option.

Biot number and Fourier number

Reynolds number and Prandtl number

Biot number and Froude number

Nusselt number and Grashof number

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

A two dimensional flow has velocities in

and

directions given by

and

, where

denotes time. The equation for streamline passing through

Your answerChoose one option.

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

An infinitely long pin fin, attached to an isothermal hot surface, transfers heat at a steady rate of

to the ambient air. If the thermal conductivity of the fin material is doubled, while keeping everything else constant, the rate of steady-state heat transfer from the fin becomes

. The ratio

Your answerChoose one option.

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

A plane truss

(

and

) is shown in the figure. The forces in the members

and

, respectively, are

Diagram for Mechanical Engineering question 14

Your answerChoose one option.

(tensile) and

(tensile)

(tensile) and

(compressive)

(compressive) and

(compressive)

(tensile) and

(tensile)

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

The relative humidity of ambient air at 300 K is 50% with a partial pressure of water vapour equal to

. The saturation pressure of water at 300 K is

. The correct relation for the air-water mixture is

Your answerChoose one option.

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

Consider the mechanism shown in the figure. There is rolling contact without slip between the disc and ground.

Diagram for Mechanical Engineering question 15

Select the correct statement about instantaneous centers in the mechanism.

Your answerChoose one option.

Only points

, and

are instantaneous centers of mechanism

Only points

and

are instantaneous centers of mechanism

Only points

, and

are instantaneous centers of mechanism

All points

and

are instantaneous centers of mechanism

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

GATE ME topic:mechanical-engineering PYQs

Question 11

Question 11

Question 12

Question 12

Question 13

Question 13

Question 14

Question 14

Question 15

Question 15