Hydraulics and Hydraulic Machines MCQs (Part-7)

What is the primary purpose of a centrifugal pump?

A Displace air
B Increase water pressure
C Transfer mechanical energy
D Convert fluid energy to mechanical energy

What type of turbine is typically used for high-head, low-flow applications?

A Kaplan turbine
B Turgo turbine
C Francis turbine
D Pelton wheel

What is the effect of a surge tank in a hydraulic system?

A Store water for later use
B Absorb pressure surges
C Measure pressure variations
D Increase flow rate

In a hydraulic system, what is the primary role of the fluid?

A Generate heat
B Transmit power
C Regulate temperature
D Increase mechanical energy

Which of the following describes a reaction turbine?

A Water flows over turbine blades
B Water is directed through nozzles
C Both pressure and kinetic energy contribute to rotation
D Converts kinetic energy to pressure energy

What does a flow meter measure?

A Temperature
B Fluid density
C Pressure
D Volume of fluid passing through

What is the most common use of a hydraulic gate in a dam?

A Regulate fluid pressure
B Control water flow
C Store water
D Generate electricity

In a Pelton wheel, what converts the water’s kinetic energy into mechanical energy?

A Blades (buckets)
B Draft tube
C Nozzle
D Shaft

What is meant by the “head” in a hydraulic system?

A Height of water in a reservoir
B Maximum flow rate
C Energy per unit weight of water
D Pressure drop across a pipe

How is the flow rate in an open channel typically calculated?

A Using Bernoulli’s equation
B By multiplying cross-sectional area and velocity
C By measuring pressure
D Using the specific speed formula

What is the effect of water hammer in pipes?

A Increased flow efficiency
B Damage to pipes and fittings
C Lowered pressure
D Increased velocity

What is the main cause of head loss in a pipe system?

A Fluid temperature
B Pipe roughness and friction
C Velocity
D Fluid density

What is the primary function of a velocity diagram in turbine analysis?

A To visualize flow energy conversion
B To adjust blade angle
C To calculate turbine efficiency
D To measure flow rate

What is an example of an energy dissipating structure in open channel flow?

A Spillway
B Pump
C Hydraulic jump
D Surge tank

Which of the following best describes a “jet propulsion” system?

A Uses the reaction of water jet to move an object
B Regulates water speed
C Increases the flow velocity of water
D Converts water’s pressure into kinetic energy