Two pipe systems can be said to be equivalent, when the following quantities are same__________________?

A. Friction loss and flow
B. Length and diameter
C. Flow and length
D. Friction factor and diameter

Bernoulli equation deals with the law of conservation of__________________?

A. Mass
B. Momentum
C. Energy
D. Work

For similarity, in addition to models being geometrically similar to prototype, the following in both cases should also be equal____________________?

A. Ratio of inertial force to force due to viscosity
B. Ratio of inertial force to force due to gravitation
C. Ratio of inertial force to force due to surface tension
D. All the four ratios of inertial force to force due to viscosity, gravitation, sur-face tension, and elasticity

Cavitation will begin when__________________?

A. The pressure at any location reaches an absolute pressure equal to the saturated vapour pressure of the liquid
B. Pressure becomes more than critical pressure
C. Flow is increased
D. Pressure is increased

Principle of similitude forms the basis of_________________?

A. Comparing two identical equipments
B. Designing models so that the result can be converted to prototypes
C. Comparing similarity between design and actual equipment
D. Hydraulic designs

A hydraulic press has a ram of 15 cm diameter and plunger of 1.5 cm. It is required to lift a weight of 1 tonne. The force required on plunger is equal to_________________?

A. 10 kg
B. 100 kg
C. 1000 kg
D. 1 kg

Cavitation is caused by_____________________?

A. High velocity
B. High pressure
C. Weak material
D. Low pressure

In order that flow takes place between two points in a pipeline, the differential pressure between these points must be more than_______________?

A. Frictional force
B. Viscosity
C. Surface friction
D. All of the above

For pipes, turbulent flow occurs when Reynolds number is _____________________?

A. Less than 2000
B. Between 2000 and 4000
C. More than 4000
D. Less than 4000

Froude number is significant in__________________?

A. Supersonics, as with projectile and jet propulsion
B. Full immersion or completely enclosed flow, as with pipes, aircraft wings, nozzles etc.
C. Simultaneous motion through two fluids where there is a surface of dis-continuity, gravity forces, and wave making effect, as with ship’s hulls
D. All of the above