Hydraulics and Hydraulic Machines MCQs (Part-5)

What type of energy is primarily used in hydraulic systems?

A Kinetic and pressure energy
B Electrical energy
C Thermal energy
D Nuclear energy

What is the main function of a draft tube in a hydraulic turbine?

A Increase velocity
B Store water
C Convert kinetic energy to pressure energy
D Reduce flow rate

Which pump is most suitable for high-viscosity fluids?

A Centrifugal pump
B Gear pump
C Reciprocating pump
D Jet pump

What happens to the velocity of water in a nozzle?

A Decreases
B Remains constant
C Drops to zero
D Increases

What is the purpose of a surge chamber in a pipeline system?

A Store excess water
B Reduce pressure variations
C Increase water velocity
D Prevent cavitation

What does a hydraulic ram pump do?

A Measures fluid velocity
B Stores hydraulic energy
C Increases water pressure
D Pumps water without electricity

What is the function of wicket gates in a Francis turbine?

A Regulate water flow
B Increase turbine speed
C Reduce cavitation
D Store hydraulic energy

In an impulse turbine, where does most of the energy conversion occur?

A Runner
B Nozzle
C Draft tube
D Guide vanes

What does cavitation in a turbine cause?

A Increases efficiency
B Improves energy conversion
C Reduces performance and damages blades
D Increases water pressure

What is the purpose of a flow control valve?

A Control flow rate
B Store hydraulic energy
C Measure fluid temperature
D Increase water pressure

What type of turbine is used in a pumped-storage hydropower plant?

A Francis turbine
B Reversible pump-turbine
C Kaplan turbine
D Pelton wheel

What is the main purpose of an expansion joint in a pipeline?

A Absorb thermal expansion and contraction
B Increase flow rate
C Reduce turbulence
D Store excess water

What happens to pressure in a venturi meter’s throat section?

A Increases
B Remains constant
C Decreases
D Drops to zero

What is the primary function of a hydraulic clutch?

A Transmit power smoothly
B Store hydraulic energy
C Measure fluid velocity
D Increase engine speed

What does a spillway do in a dam?

A Release surplus water safely
B Store excess water
C Generate power
D Control dam height