Virtual Labs

1. Undercut is provided on buckets to:

a: To reduce weight of the buckets Explanation

Explanation

b: To reduce size of the buckets Explanation

Explanation

c: To avoid interference of water jet with incoming buckets Explanation

Explanation

d: Increases the velocity Explanation

Explanation

2. Splitter on buckets is used for:

a: To reduce impact force on the bucket Explanation

Explanation

b: To strength the bucket Explanation

Explanation

c: To help split water jet into and change its direction Explanation

Explanation

d: To enhance impact force on the bucket Explanation

Explanation

3. Most widely used turbine for electricity generation:

a: Pelton Explanation

Explanation

b: Kaplan Explanation

Explanation

c: Francis Explanation

Explanation

d: All are equally used Explanation

Explanation

4. Governor in Pelton Turbine is used for:

a: To improve efficiency Explanation

Explanation

b: To maintain constant RPM Explanation

Explanation

c: To provide emergency shutdown Explanation

Explanation

d: To control the electricity generation Explanation

Explanation

5. A Pelton wheel is to be designed with a wheel pitch dia. of 1 m and jet dia. of 0.1 m. the number of buckets required:

a: 25 Explanation

Explanation

b: 20 Explanation

Explanation

c: 15 Explanation

Explanation

d: 10 Explanation

Explanation

6. Which component is not provided to Pelton wheel turbine?

a: Jet Explanation

Explanation

b: Penstock Explanation

Explanation

c: Draft tube Explanation

Explanation

d: Casing Explanation

Explanation

7. The hydraulic efficiency of Pelton turbine will be maximum when blade velocity is equal to _______

a: V/2 Explanation

Explanation

b: V/3 Explanation

Explanation

c: V/4 Explanation

Explanation

d: V/5 Explanation

Explanation

8. 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

9. Among the following which turbine has least efficiency?

a: Pelton turbine Explanation

Explanation

b: Kaplan turbine Explanation

Explanation

c: Francis turbine Explanation

Explanation

d: Propeller turbine Explanation

Explanation

10. The power supplied at inlet of turbine in S.I units is known as_____________

a: Shaft power Explanation

Explanation

b: Runner power Explanation

Explanation

c: Water power Explanation

Explanation

d: Total power Explanation

Explanation

Characteristic curves of Pelton wheel