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The specific speed of a turbine is the speed of an imaginary turbine, identical with the given turbine, which

The specific speed of a turbine is the speed of an imaginary turbine, identical with the given turbine, which Correct Answer Develops unit power under unit head

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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?
Consider the following statements regarding a turbine: 1. Specific speed plays an important role in the selection of the type of turbine. 2. An increase in specific speed of the turbine is accompanied by higher maximum efficiency. 3. The runner of too high specific speed with high available head increases the cost of the turbine on account of the high mechanical strength required. 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
What is the distance covered by boat N upstream in 5 hours? Which of the following option is sufficient alone to find the answer? A) Boat M is travelling downstream with 20% more downstream speed of boat N. Speed of boat M in still water is 10% more than the speed of boat N in still water. B) Boat M and Boat N are travelling downstream with speed 33 km/hr and 40 km/hr respectively and speed of boat M is still water is 2 times the speed of stream. C) Speed of boat M in still water is 6 km/hr less then speed of boat N in still water and speed of stream is 10 km/hr. D) Speed of stream is ½ times the speed of boat N in still water and downstream speed of boat M is 44 km/hr. E) Speed of stream is 10 km/hr and ratio of upstream speed of boat M and boat N is 3 : 2 respectively.
Group the given figures into three classes using each figure only once.
Grouping of Identical Figures mcq question image
Group the given figures into three classes using each figure only once.
Grouping of Identical Figures mcq question image
Group the given figures into three classes using each figure only once.
Grouping of Identical Figures mcq question image
Group the given figures into three classes using each figure only once.
Grouping of Identical Figures mcq question image
Group the given figures into three classes using each figure only once.
Grouping of Identical Figures mcq question image
Group the given figures into three classes using each figure only once.
Grouping of Identical Figures mcq question image