Related Questions

In reaction turbines, the axial thrust is due to
A Pressure drop across the rotor
B Change in axial velocity
C Both (A) and (B)
D None of these
The cavitation in reaction turbines is avoided, to a great extent by
A Installing the turbine below the tail race level
B Using stainless steel runner of the turbine
C Providing highly polished blades to the runner
D All of the above
Reaction turbines are used for
A Low head
B High head
C High head and low discharge
D Low head and high discharge
In turbines, the fluid undergoes a continuous steady flow process and the speed of flow is
A Low
B Very low
C High
D Very high
Overall rate of reaction in a heterogenous catalytic reaction depends upon the mass and energy transfer from the fluid to solid surface and its rate of reaction is usually __________ the concentration of catalyst, if it does not entail a chain mechanism.
A Proportional to
B Independent of
C Inversely proportional to
D Proportional to the square of
A reaction in which one of the products of reaction acts as a catalyst is called a/an __________ reaction.
A Catalytic
B Autocatalytic
C Photochemical
D None of these
The reaction in which one of the products of reaction acts as a catalyst is called a/an __________ reaction.
A Biochemical
B Photochemical
C Catalytic
D Autocatalytic
Speed of the drum of the rotary vacuum filter normally ranges from __________ rpm.
A 0.1 to 2
B 5 to 7
C 3 to 8
D 8 to 15
Speed of industrial paddle agitator ranges from __________ rpm.
A 1 to 5
B 20 to 100
C 500 to 750
D 1000 to 2000
The respective ratio between the speed of a speed of the car, bus and train is 5 : 9 : 6. The average speed of the car, bus and train is 72 km/hr together. What is the average speed (km/h)of the car and the train together?
A 82
B 72
C 67
D 84

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