# Fluid Mechanics Questions and Answers – Bernoulli’s Equation for Real Fluids and Applications of Bernoulli’s Equation

This set of Fluid Mechanics Question Bank focuses on “Bernoulli’s Equation for Real Fluids & Applications of Bernoulli’s Equation”.

1. Which is the cheapest device for measuring flow / discharge rate.
a) Venturimeter
b) Pitot tube
c) Orificemeter
d) None of the mentioned

Explanation: Orificemeter is the cheapest available device for measuring flow/discharge rate.

2. The principle of Orificemeter is same as that of Venturimeter.
a) True
b) False

Explanation: The working principle for both Orificemeter and Venturimeter is same.

3. What is the relationship between Orificemeter diameter and pipe diameter
a) Orificemeter diameter is 0.5 times the pipe diameter
b) Orificemeter diameter is one third times the pipe diameter
c) Orificemeter diameter is one fourth times the pipe diameter
d) Orificemeter diameter is equal to the pipe diameter

Explanation: None.

4. The Orificemeter readings are more accurate than Venturimeter.
a) True
b) False

Explanation: The Venturimeter readings are more accurate than Orificemeter.

5. The Orificemeter readings are more accurate than Pitot tube readings.
a) True
b) False

Explanation: The Pitot tube readings are more accurate than Orificemeter.
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6. The Orificemeter has a smooth edge hole.
a) True
b) False

Explanation: The Orificemeter has a rough edge hole.

7. A nanometre is connected to a section which is at a distance of about 4 to 6 times the pipe diameter upstream from orifice plate.
a) True
b) False

Explanation: A manometre is connected to a section which is at a distance of about 1.5 to 2.0 times the pipe diameter upstream from orifice plate.

8. Venturimeter is based on integral form of Euler’s equation.
a) True
b) False

Explanation: Venturimeter is based on Bernoulli’s equation.

9. Orifice Meter can only be used for measuring rate of flow in open pipe like structure.
a) True
b) False

Explanation: Orificemetre can only be used for measuring rate of flow in an enclosed pipe like structure.

10. Orifice meter consists of a flat rectangular plate.
a) True
b) False

Explanation: Orifice meter consists of a flat circular plate.

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