Virtual Labs

1. The energy of water entering a reaction turbine consists of:

a: Only pressure energy Explanation

Explanation

b: Only kinetic energy Explanation

Explanation

c: Partly pressure energy and partly kinetic energy Explanation

Explanation

d: Only potential energy Explanation

Explanation

2. Which of the following is a reaction turbine?

a: Pelton wheel turbine Explanation

Explanation

b: Francis turbine Explanation

Explanation

c: Turgo turbine Explanation

Explanation

d: Cross-flow turbine Explanation

Explanation

3. The primary function of a draft tube in a reaction turbine is to:

a: Increase inlet pressure Explanation

Explanation

b: Reduce discharge Explanation

Explanation

c: Increase rotational speed Explanation

Explanation

d: Recover kinetic energy at the runner outlet Explanation

Explanation

4. Which turbine is most suitable for high-head and low-discharge conditions?

a: Kaplan turbine Explanation

Explanation

b: Francis turbine Explanation

Explanation

c: Pelton wheel turbine Explanation

Explanation

d: Propeller turbine Explanation

Explanation

5. The specific speed of a turbine is useful for:

a: Determining water density Explanation

Explanation

b: Selecting the appropriate turbine type Explanation

Explanation

c: Calculating atmospheric pressure Explanation

Explanation

d: Measuring discharge directly Explanation

Explanation

6. Cavitation in turbines can be minimized by:

a: Increasing the suction head excessively Explanation

Explanation

b: Reducing the atmospheric pressure Explanation

Explanation

c: Operating below vapor pressure Explanation

Explanation

d: Providing proper setting and draft tube design Explanation

Explanation

7. The hydraulic efficiency of a turbine is defined as the ratio of:

a: Power delivered to the shaft to the power supplied by water to the runner Explanation

Explanation

b: Mechanical power to electrical power Explanation

Explanation

c: Overall efficiency to volumetric efficiency Explanation

Explanation

d: Output power to input electrical power Explanation

Explanation

8. Which turbine generally possesses the highest specific speed?

a: Pelton wheel turbine Explanation

Explanation

b: Francis turbine Explanation

Explanation

c: Turgo turbine Explanation

Explanation

d: Kaplan turbine Explanation

Explanation

9. Unit speed of a turbine is defined as the speed of the turbine operating under:

a: Unit discharge Explanation

Explanation

b: Unit head Explanation

Explanation

c: Unit power Explanation

Explanation

d: Unit efficiency Explanation

Explanation

Turbines Experiment