Virtual Labs

1. Where is the velocity of flow maximum in a jet issuing from an orifice?

a: At the free surface of the tank Explanation

Explanation

b: At the center of the tank Explanation

Explanation

c: At the vena contracta Explanation

Explanation

d: Far downstream of the jet Explanation

Explanation

2. The coefficient of discharge of an orifice is always:

a: Less than unity Explanation

Explanation

b: Equal to unity Explanation

Explanation

c: Greater than unity Explanation

Explanation

d: Zero Explanation

Explanation

3. Which theorem is used to derive the theoretical velocity through an orifice?

a: Pascal's law Explanation

Explanation

b: Bernoulli's theorem Explanation

Explanation

c: Newton's law of viscosity Explanation

Explanation

d: Archimedes' principle Explanation

Explanation

4. The coefficient of velocity is defined as the ratio of:

a: Theoretical velocity to actual velocity Explanation

Explanation

b: Actual velocity to theoretical velocity Explanation

Explanation

c: Actual discharge to theoretical discharge Explanation

Explanation

d: Area of jet to area of orifice Explanation

Explanation

5. Which coefficient accounts for the reduction in jet area after the fluid leaves the orifice?

a: Coefficient of contraction Explanation

Explanation

b: Coefficient of velocity Explanation

Explanation

c: Coefficient of friction Explanation

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d: Coefficient of pressure Explanation

Explanation

6. Which type of energy is mainly converted into kinetic energy when fluid flows through an orifice?

a: Heat energy Explanation

Explanation

b: Chemical energy Explanation

Explanation

c: Pressure energy Explanation

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d: Nuclear energy Explanation

Explanation

7. Which of the following devices experiences greater permanent head loss?

a: Venturimeter Explanation

Explanation

b: Pitot tube Explanation

Explanation

c: Flow nozzle Explanation

Explanation

d: Orifice meter Explanation

Explanation

8. In the determination of coefficient of velocity using the jet trajectory method, the jet path is assumed to follow:

a: Circular motion Explanation

Explanation

b: Simple harmonic motion Explanation

Explanation

c: Rectilinear motion Explanation

Explanation

d: Projectile motion Explanation

Explanation

9. For an ideal fluid flowing through an orifice, the coefficient of velocity would theoretically be:

a: 0 Explanation

Explanation

b: Less than 0.5 Explanation

Explanation

c: 1 Explanation

Explanation

d: Greater than 1 Explanation

Explanation

Orifices Experiment