Bissoy.com
Doctors Medicines MCQs Q&A

Consider the following statements in respect of Kaplan turbine 1. It is a reaction turbine. 2. It is a mixed flow turbine. 3. It has adjustable blades. Which of the statements given above are correct?

Consider the following statements in respect of Kaplan turbine 1. It is a reaction turbine. 2. It is a mixed flow turbine. 3. It has adjustable blades. Which of the statements given above are correct? Correct Answer 1 and 3

Explanation:

Kaplan turbine:

  • In Kaplan turbine, water flows parallel to the axis of rotation of the shaft, hence it is called axial flow turbine.
  • Head at the inlet of turbine is the sum of pressure energy and kinetic energy.
  • During flow of water through runner, a part of pressure energy is converted into kinetic energy.
  • It indicates that Kaplan turbine is a reaction turbine. When the vanes on the hub are adjustable, the turbine is known as Kaplan turbine.
  • When vanes are not adjustable, turbine is called propeller turbine. Kaplan turbine components are shown in the figure below.

Related Questions

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?
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
Consider the following statements: 1. The distinguishing features of a radial flow reaction turbine are – (i) only a part of the total head of water is converted into velocity head before it reaches the runner and (ii) the flow through water completely fills all the passages in the runner. 2. Kaplan turbine is essentially a propeller working in reverse, and its blades are so mounted that all the blade angles can be adjusted simultaneously by means of suitable gearing even as the machine is in operation 3. A draft tube is pipe of gradually increasing cross-sectional area which must be airtight, and under all conditions of operation, its lower end must be submerged below the level of the discharged water in the tailrace. Which of the above statements are correct? 
The volume flow rate into a Kaplan turbine is Q m3/s. 0.10Q m3/s volume of water do not flow over the runner blades. What further information is required to find the volumetric efficiency (numerical value) of the Kaplan turbine?
In the following question below are given some statements followed by some conclusions based on those statements. Taking the given statements to be true even if they seem to be at variance from commonly known facts. Read all the conclusions and then decide which of the given conclusion logically follows the given statements. Statements: 1. Some blades are razors. 2. All razors are axes. Conclusion: I. Some axes are blades. II. Some blades are axes.
Consider the following statements regarding turbines: I. the main function of a governor is to maintain a constant speed even as the load on the turbine fluctuates 2. In the cast of Pelton turbines, the governor closes or opens the wicket gates 3. In the case of Francis turbines, the governor opens or closes the needle valve 4. In the case of a Kaplan turbine, the governor swings the runner blades appropriately in addition to further Closing or further opening of wicket gates Which of the above statements are correct?
In a reaction turbine, the fixed blades and moving blades are of the same shape but reversed in direction. The angle of the discharging tip is 20°. The mean blade velocity is 200 m/s. The axial velocity of flow of steam is half of the mean blade velocity. Determine the inlet angles of blades.
The velocity of the flow at the inlet of Kaplan turbine is V. In an experimental setup, what could be the possible value of the velocity of the flow at the outlet of Kaplan turbine?
In the question two statements are given, followed by two conclusions, I and II. You have to consider the statements to be true even if it seems to be at variance from commonly known facts. You have to decide which of the given conclusions, if any, follows from the given statements. Statement I: All scissors are knives Statement II: Some blades are scissors Conclusion I: Some knives are blades Conclusion II: All blades are knives
The following are the conditions for selecting list of a suitable candidates to be called for interview after the written test for the recruitment is conducted/ organized for management-level persons of a multi-national company. For providing accounting services and sales the candidate must (a) be holding a graduation in basic science with 65% or above or B.E degree with 55% and above marks (b) have passed the written test with 70% or above marks (c) the age must be in the group 25 to 30 yrs as on 1/4/18 (d) have experience in an accounting firms for three yrs and diploma in accounting with 60% or above marks (e) be presently drawing CTC of 6 Lakhs per annum and above In case the applicant who satisfies all other terms above except 1) at (a) above, then be referred as Junior Accountant 2) at (d) & (e) above then be referred as Trainee-Accountant Satisfying all the above with experience of 5 yrs then be referred as senior-Accountant Satisfying all the above criteria (a-e) with CA/ ICWA/ MBA (Finance) then be refereed as manager (Accounts) Read all the above information and answer the following question: Radha Mohan has done her graduation in physics with 58% of marks. She has passed the written examination with 76% of marks. She is 27 yrs as on June 2018. She has the experience in the accounting company for four years with salary of 7 Lakhs per annum. She also has passed diploma in accounting with 61% of marks. She may be referred for the position of: