Here is a sample test for ISRO Technical Assistant position related to Fluid Mechanics. It includes multiple-choice questions (MCQs) that cover various topics within fluid mechanics. You can use this test to assess your knowledge and preparation for the ISRO Technical Assistant exam.

Instructions:
- This test consists of 30 multiple-choice questions.
- Each question has only one correct answer.
- Choose the most appropriate option and mark your answer on a separate sheet of paper.
- There is no negative marking for incorrect answers.
- After completing the test, compare your answers with the provided answer key.

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Fluid Mechanics Test:

1. What is the SI unit of viscosity?
a) Pascal-second
b) Newton-meter
c) Kilogram per second
d) Meter per second squared

2. Which of the following is a non-Newtonian fluid?
a) Water
b) Air
c) Honey
d) Gasoline

3. Which equation represents Bernoulli's principle?
a) P + 0.5ρv² + ρgh = constant
b) P + ρgh = constant
c) P + 0.5ρv² = constant
d) P + ρv² + ρgh = constant

4. What is the equation for calculating the Reynolds number (Re) in fluid flow?
a) Re = ρvd/μ
b) Re = ρv²d/μ
c) Re = ρvd²/μ
d) Re = ρv/μd

5. Which law describes the relationship between the pressure and volume of a gas at a constant temperature?
a) Boyle's law
b) Charles's law
c) Avogadro's law
d) Gay-Lussac's law

6. Which type of fluid flow occurs when the velocity of the fluid particles at a specific point remains constant over time?
a) Steady flow
b) Laminar flow
c) Turbulent flow
d) Compressible flow

7. The point at which the velocity of a fluid is minimum is known as the:
a) Stagnation point
b) Separation point
c) Transition point
d) Critical point

8. What is the term for the force exerted by a fluid on an object immersed in it?
a) Buoyancy
b) Viscosity
c) Drag
d) Lift

9. Which of the following devices is used to measure fluid pressure?
a) Venturi meter
b) Orifice plate
c) Manometer
d) Pitot tube

10. Which law states that the volume of a given mass of gas is directly proportional to its absolute temperature?
a) Boyle's law
b) Charles's law
c) Avogadro's law
d) Gay-Lussac's law

11. The difference in pressure between two points in a fluid is called:
a) Hydrostatic pressure
b) Absolute pressure
c) Gauge pressure
d) Differential pressure

12. Which equation represents the continuity equation for fluid flow?
a) Q = A1V1 = A2V2
b) Q = ρgA
c) Q = m/t
d) Q = PA

13. Which of the following is an example of a positive displacement pump?
a) Centrifugal pump
b) Axial flow pump