___________ is valid for any fluid (liquid or gas); it is especially crucial to fluids moving at a high velocity. Its principle is the basis of venturi scrubbers, thermo—compressors, aspirators, and other devices where fluids are moving at high velocities.

A large tank of height h is half-filled with a liquid of density ρ and other half-filled with a liquid of density 4ρ. A similar tank is half-filled with a liquid of density 2ρ and other-half filled with another liquid of density 3ρ as shown. What will be the ratio of the instantaneous velocities of discharge through a small opening at the base of the tanks? (assume that the diameter of the opening is negligible compared to the height of the liquid column in either of the tanks)

A

1 : 1

B

1 : 2

C

2 : 1

D

1 : 3

Propositions are
1. Gift made during marz-ul-maut to a heir is valid without the consent of other heirs under Sunnite law
2. Gift made during marz-ul-maut to a heir is valid without the consent of other heirs under Ithna Ashari law
3. Gift made during marz-ul-maut to a heir is valid only with the consent of other heirs, under Sunnite law
4. Gift made during marz-ul-maut to a heir is valid only with the consent of other heirs under the Shia law.
Which amongst the following is correct

A

1 is true 2-3-4 are false

B

1 & 2 are true 3 & 4 are false

C

2 & 3 are true 1 & 4 are false

D

3 & 4 are true 1 & 2 are false

Bernoulli's equation for fluid flow is derived following certain assumptions. Out of the assumptions listed below, which set of assumptions is used in derivation of Bernoulli's equation?
1. Fluid flow is frictionless & irrotational
2. Fluid flow is steady
3. Fluid flow is uniform & turbulent
4. Fluid is compressible
5. Fluid is incompressible

A

1, 3, 4

B

2, 4, 5

C

1, 2, 5

D

1, 4, 5

A large tank of height h is filled with a liquid of density ρ. A similar tank is half-filled with this liquid and other-halffilled with another liquid of density 2ρ as shown. What will be the ratio of the instantaneous velocities of discharge through a small opening at the base of the tanks? (assume that the diameter of the opening is negligible compared to the height of the liquid column in either of the tanks)

A

2 : 3

B

2 : √3

C

√2 : 3

D

√2 : √3

A designer chooses the values of fluid flow rates and specific heats in such a manner that the heat capacities of the two fluids are equal. A hot fluid enters the counter flow heat exchanger at 100°C and leaves at 60°C. A cold fluid enters the heat exchanger at 40°C. The mean temperature difference between the two fluids is

A

20°C

B

40°C

C

60°C

D

66.7°C

What is the reason for the high performance of venturi scrubbers?

A

Their ability to collect small particles

B

Entrained gas acceleration

C

High pressure drop

D

They can collect sticky particles

Which of the following factors is affected by the high-efficiency collection of fine particles in venturi scrubbers?

A

Pressure drop

B

Time of operation

C

Velocity of particles

D

Length of the device

Venturi scrubbers are very efficient for the absorption process. What is the reason for not being in high demand?

A

Energy requirement is high

B

Loading capacities are low

C

Because liquid and gas flow in the same direction

D

Low velocity of the gas stream

In the question below, are given a statement followed by three courses of actions numbered I, II and III. On the basis of the information given, you have to assume everything in the statement to be true, and then decide which of the suggested courses of action logically follow(s) for pursuing. Statement: Soon you would not need to carry original copies of all vehicle papers like driving licence, vehicle registration certificate, insurance, pollution certificate or the permits issued to commercial vehicles with you. According to a ToI report, the Centre plans to amend Motor Vehicles Rules to make it legal for any citizen to carry digital vehicle documents and simultaneously making it compulsory for traffic police to accept digital version of documents. This means that you would not have to carry physical papers in your vehicle as digital copies of the certificates would be valid. Courses of action: I. The ministry has proposed installation of FASTags on the front windscreens. FASTag is a device that uses radio frequency identification (RFID) technology for making toll payments directly from the user account. II. To avail the facility, one has to store all the vehicle documents on the government's cloud-based service DigiLocker and when asked he/she can simply display the stored certificates on a smartphone or any other digital devices. These digital copies can be shared with other departments as identity and address proof. III. The government has increased the maximum load carrying capacity of heavy vehicles, including trucks, by 20-25 per cent besides scrapping the mandatory annual renewal of fitness certificates for freight carriers. Fitness certificates for trucks would now be renewed in every two years not annually. Which of the following course/courses of action can be said to be said to be a rudimentary course/courses of action?

A

Only III follows

B

Neither I nor III follows

C

None follows

D

All except III and II

E

All I, II and III follow

Select from the following non - Newtonian fluids in which the rate of shear deformation is a function of both shear stress and time - (1) Dilatant liquid (2) Bingham plastic liquid (3) Pseudoplastic liquid (4) Thixotropic liquid (5) Rheopectic liquid

A

1, 2 and 3

B

2 and 3

C

1, 4 and 5

D

4 and 5

___________ is valid for any fluid (liquid or gas); it is especially crucial to fluids moving at a high velocity. Its principle is the basis of venturi scrubbers, thermo—compressors, aspirators, and other devices where fluids are moving at high velocities.

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