Hydraulics and Hydraulic Machines MCQs (Part-10)

What does “specific speed” of a turbine indicate?

A Turbine operating temperature
B Turbine blade material
C The turbine’s operational efficiency
D Performance characteristics of a turbine

What is the primary function of jet propulsion?

A To generate thrust through fluid expansion
B To use high-speed jets of water or air to move an object
C To store energy
D To regulate fluid flow rate

What does pump priming involve?

A Removing air from the pump
B Increasing pump efficiency
C Increasing water flow
D Measuring water temperature

What is the purpose of governing in turbines?

A To regulate flow direction
B To adjust water pressure
C To control turbine speed
D To prevent cavitation

What does a velocity diagram in a turbine represent?

A Fluid density changes
B The change in water velocity through the turbine
C Direction of water flow
D Pressure distribution across the turbine blades

What is typically used to measure the flow rate of water in a pipe?

A Pressure gauge
B Speedometer
C Flow meter
D Thermometer

What happens in a centrifugal pump when it reaches its shutoff head?

A It increases efficiency
B It stops pumping
C It starts cavitating
D It reaches maximum flow rate

How is energy dissipated in a hydraulic jump?

A By reducing water temperature
B By increasing the water depth and turbulence
C By storing potential energy
D By increasing the flow velocity

What is the function of a fluid coupling in a hydraulic system?

A Smooth transmission of power
B Increase pressure
C Measure fluid velocity
D Store fluid energy

Which of the following best describes canal hydraulics?

A Energy generation through canals
B Pressure measurement in canals
C The regulation of water velocity in reservoirs
D The study of water flow in open channels

What is the primary use of a surge tank in hydroelectric plants?

A Store water for future use
B Increase water flow
C Absorb pressure variations
D Regulate temperature

In a Francis turbine, water flows:

A Radially inward
B Axially
C Radially outward
D Tangentially

What type of energy does a hydraulic machine typically use?

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

What is meant by flow distribution in hydraulic systems?

A Regulation of water temperature
B Control of water velocity
C The allocation of flow rate across various channels
D Measuring the pressure at different points

How is the efficiency of a turbine typically determined?

A By measuring water temperature
B By comparing input and output energy
C By calculating the pressure drop
D By comparing input and output energy