Important Question for Competitive Exams

1. Which one of the following engine has the maximum Carnot cycle  

1.  Steam engine
2.  well lubricated engine
3.  reversible engine 
4. irreversible engine

2. The type of polarization where the displacement of cations and axions in opposite direction by the influence of external electric field occurs is

1. electronic  polarization
2. ionic  polarization
3. space charge  polarization
4. none of the above

3. what should be the coefficient of discharge of an orifice-meter than that of a  venturimeter

1. much small than
2. extremely higher than
3. equal to
4. both (2) & (3)

4. The second law of thermodynamics supports

1. heat can not be transferred from  low temperature to high temperature source without the help of external energy
2. heat can not be transferred from  low temperature to high temperature source if COP of process is more than unity
3. heat can not be transferred from  low temperature to high temperature source by using refrigeration cycle
4. heat can not be transferred from  low temperature to high temperature source by constant temperature cycle

 5. Select the best suited definition of transfer function from the given below options

1. its a ratio of the laplace transform of the system response to the  laplace transform of the system input function
2. its a ratio of the laplace transform of the system response to the  laplace transform of the system output function
3. its  laplace transform of the system response plus laplace transform of the system input function
4. its laplace transform of the system response minus laplace transform of the system input function

6.Which one of the following property is possessed by a real practical fluid

1. viscosity
2. compressibility
3. weight density
4. specific volume

7. Among which of the following  the correct definition of displacement thickness stands

1. the layer which represent the entropy
2. the layer which represent  reduction in momentum
3. the distance measured perpendicular to the boundary by which the free stream is displaced in order to have a formation of boundary layer
4. the distance measured perpendicular to the boundary by which the free stream is displaced in order to prevent the  formation of boundary layer

8. Venturimeter is used to measure

1. flow rate
2. pressure
3. viscosity
4. none of the above

9.Let us consider that the radius of the earth were to shrink by 1%. But the mass remaining will remain same and the acceleration due to gravity on the earth’s surface would

1. decrease by 11.65%
2. remain unchanged
3. increase by 2%
4. will increase by 12.8%

10.The first observer on super conductivity was 

1. H S Onnnes
2. H K Onnes
3. Kirchoff
4. Tolman

Answer (1) : 3

Answer (2) : 2

Answer (3) : 1

Answer (4) : 3  

Answer (5) : 1

Answer (6) : 2

Answer (7) : 3 

Answer (8) : 1

Answer (9) : 3

Answer (10) : 2

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Important Question for Competitive Exams

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