GATE XE 2017 Paper 1 — page 8

Complete GATE XE 2017 Paper 1 overview, original pages and practice · Timed previous-paper practice

Questions 22–24 of 175. Imported answers require review unless explicitly marked reviewed.

Paper practice 175 questionsPage 8 of 59

A spherical balloon of diameter 15 m is supposed to lift a load of 3000 N. The lifting of load is achieved by heating the air inside the balloon. Assume, air to be an ideal gas and atmospheric pressure either outside or inside the balloon. The value of acceleration due to gravity is 9.81 m/s² and the values of temperature and density of atmospheric air are 15°C and 1.2 kg/m³, respectively. In order to lift the specified load, the air inside the balloon should be heated to a temperature (°C) of __________

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The velocity field in Cartesian coordinate system for a two-dimensional steady flow is given as:

where,

and

are constants. Which one of the following expressions represents the acceleration field (

) for this flow?

Your answerChoose one option.

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A cylindrical tank of 0.8 m diameter is completely filled with water and its top surface is open to atmosphere as shown in the figure. Water is being discharged to the atmosphere from a circular hole of 15 mm diameter located at the bottom of the tank. The value of acceleration due to gravity is 9.81 m/s². How much time (in seconds) would be required for water level to drop from a height of 1 m to 0.5 m?

Diagram for Engineering Sciences question 24

Your answerChoose one option.

188

266

376

642

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2017 · Paper 1

Question 22

Question 23

Question 24