Francis turbine is suitable for medium head hydroelectric power plant.

Consider the following statements in connection with hydraulic turbines: 1. The Kaplan turbine is a radial flow turbine in which the guide vane angles as well as the runner vane angles are adjustable. 2. Francis and Kaplan turbines are provided with draft tubes which carry water from exit of runner to tail water to increase the gross head across the turbine. 3. The parts of turbines susceptible to cavitation are the guide vanes and runner vanes – drastically reducing the turbine efficiency. 4. The specific speed of a 4-jet Pelton turbine will be 28 if the specific speed of a single-jet Pelton turbine is 14. Which of the above statements are correct?

A

2 and 3 only

B

1 and 3 only

C

1 and 4 only

D

2 and 4 only

Which of the following statement(s) is/are incorrect? (i) A turbine is called an impulse turbine if at the inlet of the turbine total energy is only kinetic energy (ii) A turbine is called a reaction turbine if at the inlet of the turbine the total energy is kinetic energy and pressure energy (iii) The inward flow reaction turbine having radial discharge at the outlet is known as Kaplan turbine

A

Only (i)

B

Only (iii)

C

(i) and (ii)

D

(ii) and (iii)

There are two medium L1 and L2 of refractive index n1 and n2 respectively (n2 > n1 > 1). In which of the following condition the total internal reflection may occur: a) When the light travel from medium L1 to medium L2. b) When the light travels from medium L2 to medium L1. c) When the light travel from medium L1 to air. d) When the light travels from air to medium L2. Which of the following statement is correct?

A

Only b is correct

B

b and c are correct.

C

Only c is correct

D

a and d are correct.

A student performs an experiment with a Francis turbine. He accidently set the RPM of Francis turbine to 1400 rpm instead of 700 rpm. He reported the power to be 1 MW. His teacher asks him to perform the same experiment using the correct RPM. The student performs the same experiment again, but this time the erroneously doubled the flow velocity. What does the student report the power to be?

A

0.5 MW

B

0.25 MW

C

2 MW

D

1 MW

Two centrifugal pumps P and R are available for use in a pipe flow system and their head-discharge characteristics are as follows. Pump P Pump R Discharge (cumecs) Head (m) Discharge (cumecs) Head (m) 0 40 0 45 0.12 35 0.14 40 0.2 28 0.24 35 0.3 18 0.3 28 The following statements (S1, S2, and S3) pertain to the head and discharge values during actual operation. Neglect losses in the system. Which of the following statements are correct? S1: When the two pumps P and R are connected in parallel, the discharge is 0.36 cumecs corresponding to a head of 35 m. S2: When the two pumps P and R are connected in parallel, the discharge is 0.36 cumecs corresponding to a head of 70 m. S3: When the two pumps P and R are connected in series, the discharge is 0.3 cumecs corresponding to a head of 46 m.

A

S2 only

B

S1 and S3

C

S1 and S2

D

S2 and S3

Consider the following statements : 1. St. Francis Xavier was one of the founding members of the Jesuit Order. 2. St. Francis Xavier died in Goa and a church is dedicated to him there. 3. The Feast of St. Francis Xavier is celebrated in Goa each year. Which of the statements given above are correct?

A

1 and 2 only

B

2 and 3 only

C

1 and 3 only

D

1, 2 and 3

Each question given below consists of a statement, followed by two arguments numbered I and II. You have to decide which of the arguments is a 'strong' argument and which is a 'weak' argument STATEMENT: Should India focus on Hydroelectric power generation to fulfil its energy requirement? ARGUMENT: 1 Hydropower is fueled by water, so it's a clean fuel source, meaning it won't pollute the air like power plants that burn fossil fuels, such as coal or natural gas. 2 Hydroelectric power is a domestic source of energy, allowing each state to produce its own energy without being reliant on international fuel sources.

A

Only argument 1 is strong.

B

Only argument 2 is strong.

C

Either I or II is strong.

D

Neither I nor II is strong.

E

Both I and II are strong.

Which of the following power plant is a mismatch? Harduaganj Thermal Power Plant - Aligarh District Obra power plant - Sonbhadra District Anpara thermal power plant - Lalitpur District

A

Only 1 and 2

B

Only 2 and 3

C

Only 1 and 3

D

All of these

Read the following statements: I. Diesel power plant is generally used as base load plant. II. Gas turbine power plant is used as peak load plant.

A

Only I is correct

B

Only II is correct

C

I and II are correct

D

I and II are wrong

Near a natural gas deposits, we require to set up a gas turbine plant. Geologist inform engineers that helium gas is found in abundance here. Hence, engineers seek to use helium as working medium for the gas power plant. This turbine is a _________

A

Multi-shaft open cycle gas turbine

B

Single shaft open cycle gas turbine

C

Closed cycle gas turbine

D

Simple Open cycle Gas Turbine

Francis turbine is suitable for medium head hydroelectric power plant.

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