1. A differential manometer is used to measure ?

atmospheric pressure

pressure in pipes and channels

pressure in venturimeter

difference of pressures between two points in a pipe

Answer: difference of pressures between two points in a pipe

Explanation:


2. The Bernoulli's equation is based on the assumption that ?

there is no loss of energy of the liquid flowing

the velocity of flow is uniform across any cross-section of the pipe

no force except gravity acts on the fluid

all of the above

Answer: all of the above

Explanation:


3. A vertical wall is subjected to a pressure due to one kind of liquid, on one of its sides. Which the following statement is correct ?

The pressure on the wall at the liquid level is minimum

The pressure on the bottom of the wall is maximum

The pressure on the wall at the liquid level is zero, and on the bottom of the wall is maximum

The pressure on the bottom of the wall is zero

Answer: The pressure on the wall at the liquid level is zero, and on the bottom of the wall is maximum

Explanation:


4. The weight per unit volume of a liquid at a standard temperature and pressure is called ?

specific weight

mass density

specific gravity

none of these

Answer: specific weight

Explanation:


5. An average value of coefficient of velocity is ?

0.62

0.76

0.84

0.97

Answer: 0.97

Explanation:


6. When a body is immersed wholly or partially in a liquid, it is lifted up by a force equal to the weight of liquid displaced by the body. This statement is called ?

Pascal's law

Archimede's principle

principle of floatation

Bernoulli's theorem

Answer: Archimede's principle

Explanation:


7. The metacentric height is the distance between the ?

centre of gravity of the floating body and the centre of buoyancy

centre of gravity of the floating body and the metacentre

metacentre and centre of buoyancy

original centre of buoyancy and new centre of buoyancy

Answer: centre of gravity of the floating body and the metacentre

Explanation:


8. A flow in which the quantity of liquid flowing per second is constant, is called .............. flow ?

steady

streamline

turbulent

unsteady flow

Answer: steady

Explanation:


9. The pressure of a liquid measured with the help of a piezometer tube is ?

vacuum pressure

gauge pressure

absolute pressure

atmospheric pressure

Answer: gauge pressure

Explanation:


10. Barometer is used to measure ?

velocity of liquid

atmospheric pressure

pressure in pipes and channels

difference of pressure between two points in a pipe

Answer: atmospheric pressure

Explanation: