136. In the velocity diagram shown below, u = blade velocity, C = absolute fluid velocity and W = relative velocity of fluid and the subscripts 1 and 2 refer to inlet and outlet. This diagram is for
     

1. 1. an impulse turbine

   
   
   

   2. a reaction turbine

   
   
   

   3. a centrifugal compressor

   
   
   

   4. an axial flow compressor

   
   
   

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1. View Hint View Answer Discuss in Forum

   As u₁ = u₂ and w₂ > > w₁
   

   Correct Option: B

   As u₁ = u₂ and w₂ > > w₁
   

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137. Considering the variation of static pressure and absolute velocity in an impulse steam turbine, across one row of moving blades

1. 1. both pressure and velocity decrease

   
   
   

   2. pressure decreases but velocity increases

   
   
   

   3. pressure remains constant, while velocity increases

   
   
   

   4. pressure remains constant, while velocity decreases

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: D

   NA

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138. The Rateau turbine belongs to the category of

1. 1. pressure compounded turbine

   
   
   

   2. reaction turbine

   
   
   

   3. velocity compounded turbine

   
   
   

   4. radial flow turbine

   
   
   

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1. View Hint View Answer Discuss in Forum

   Rateau trubine is a category of pressure compounded impulse turbine. Curtis turbine is a category of velocity compounded impulse trubine.
   

   Correct Option: A

   Rateau trubine is a category of pressure compounded impulse turbine. Curtis turbine is a category of velocity compounded impulse trubine.
   

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139. Which of the following is a pressure compounded turbine?

1. 1. Parsons

   
   
   

   2. Curtis

   
   
   

   3. Rateau

   
   
   

   4. All of three

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: C

   NA

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140. A Curtis stage, Rateau stage and a 50% reaction stage in a steam turbine are examples of

1. 1. different types of impulse stages

   
   
   

   2. different types of reaction stages

   
   
   

   3. a simple impulse stage, a velocity compounded impulse stage and reaction stage

   
   
   

   4. a.velocity compounded impulse stage, a pressure compounded impulse stage and a reaction stage

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: D

   NA

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