Hydraulics and Hydraulic Machines MCQs (Part-2)

What is the primary principle of a centrifugal pump?

A Heat transfer
B Gravitational force
C Bernoulli’s principle
D Centrifugal force

Which of the following turbines is typically used in low-head, high-flow applications?

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

What is the main purpose of a hydraulic accumulator?

A To store potential energy
B To regulate flow
C To store electrical energy
D To increase pressure

What is the efficiency of a turbine primarily determined by?

A Speed of the water
B Water temperature
C Head and flow rate
D Pipe diameter

In which of the following does energy dissipation occur in a hydraulic system?

A Turbine operation
B Hydraulic jump
C Pump priming
D Velocity increase

Which of the following is the most common type of cavitation?

A Vapor cavitation
B Gas cavitation
C Solid cavitation
D Vapor cavitation

What does the term “head” refer to in hydraulics?

A Energy potential of water
B Height of the water
C Water pressure
D Fluid velocity

What is the primary purpose of an impulse turbine like the Pelton wheel?

A To store energy
B To regulate water flow
C To use water velocity to generate power
D To increase turbine efficiency

What type of turbine is used to harness energy from water with both high head and low flow?

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

What does a surge tank protect against in a hydraulic system?

A Excessive pressure changes
B Low water levels
C Fluid contamination
D Decreased water flow

Which of the following is a key feature of a Kaplan turbine?

A High-speed rotation
B Axial flow with adjustable blades
C Radial flow
D Impulse action

Which type of energy is typically associated with a hydraulic power system?

A Hydraulic energy
B Mechanical energy
C Thermal energy
D Electrical energy

What is “pump priming” in a hydraulic system?

A Starting the pump motor
B Increasing pump efficiency
C Filling the pump with liquid before starting
D Increasing fluid velocity

In fluid mechanics, what is “velocity diagram” used for?

A To analyze velocity changes in turbines
B To show fluid pressure variations
C To measure fluid density
D To calculate flow rate

What does a flow control system do in a hydraulic network?

A Maintains a constant flow rate
B Controls the direction of flow
C Measures water speed
D Regulates water temperature