Virtual Labs

1. Pelton turbine is

a: Impulsive Turbine Explanation

Explanation

b: Reaction Turbine Explanation

Explanation

c: Hybrid of Impulsive and Reaction Turbine Explanation

Explanation

d: Neither impulse nor reaction Explanation

Explanation

2. Maximum Head required in the following turbine

a: Kalpan Explanation

Explanation

b: Pelton Explanation

Explanation

c: Francis Explanation

Explanation

d: All of these Explanation

Explanation

3. Brake Jet in Pelton turbine is mainly used for

a: Emergency braking Explanation

Explanation

b: Maintaining the speed Explanation

Explanation

c: Stopping the runner to stand still Explanation

Explanation

d: Emergency accelerating Explanation

Explanation

4. Penstock is the___in a hydroelectric power plant

a: A conduit that connects the forebay to the turbine’s casing Explanation

Explanation

b: Pipe connecting the surge tank to the dam Explanation

Explanation

c: A pipe attached to the runner output Explanation

Explanation

d: A nozzle for spraying water Explanation

Explanation

5. In Pelton turbine ___________ is defined as ratio between power delivered to runner and power supplied at inlet of turbine.

a: Mechanical efficiency Explanation

Explanation

b: Volumetric efficiency Explanation

Explanation

c: Hydraulic efficiency Explanation

Explanation

d: Overall efficiency Explanation

Explanation

6. The maximum efficiency of Pelton turbine is _________

a: 80% Explanation

Explanation

b: 70% Explanation

Explanation

c: 50% Explanation

Explanation

d: 88% Explanation

Explanation

7. In Pelton turbine product of mechanical efficiency and hydraulic efficiency is known as _____________

a: Mechanical efficiency Explanation

Explanation

b: Volumetric efficiency Explanation

Explanation

c: Hydraulic efficiency Explanation

Explanation

d: Overall efficiency Explanation

Explanation

8. In Pelton ____________ is ratio of volume of water actually striking the runner and volume of water supplied to turbine.

a: Mechanical efficiency Explanation

Explanation

b: Volumetric efficiency Explanation

Explanation

c: Hydraulic efficiency Explanation

Explanation

d: Overall efficiency Explanation

Explanation

9. The operating characteristic curves of a turbine are

a: Varying speed curves Explanation

Explanation

b: Constant efficiency curves Explanation

Explanation

c: Constant head curves Explanation

Explanation

d: Constant speed curves Explanation

Explanation

10. The width of buckets of Pelton wheel is _________________

a: 2 times diameter of jet Explanation

Explanation

b: 3 times diameter of jet Explanation

Explanation

c: 4 times diameter of jet Explanation

Explanation

d: 5 times diameter of jet Explanation

Explanation

Characteristic curves of Pelton wheel