According to fan laws, for fans having constant wheel diameter, the air or gas capacity varies______________________?
(A) directly as fan speed
(B) square of fan speed
(C) cube of fan speed
(D) square root of fan speed
(D) none of the above
Saving of work done and power by fitting an air vessel to single acting reciprocating pump is of the order of__________________?
(A) 39.2%
(B) 49.2%
(C) 68.8%
(D) 84.8%
(D) 91.6%.
According to fan laws, for fans having constant wheel diameter, the pressure varies________________?
(A) directly as fan speed
(B) square of fan speed
(C) cube of fan speed
(D) square root of fan speed
(D) none of the above
Pressure intensifier increases the pressure in proportion to____________________?
(A) ratio of diameters
(B) square of ratio of diameters
(C) inverse ratio of diameters
(D) square of inverse ratio of diameters
(D) fourth power of ratio of diameters
Atomic number of an element in the periodic table represents the numbers of_________________?
(A) protons in the nucleus
(B) electrons in me nucleus
(C) neutrons in the nucleus
(D) electrons in the atom
(D) neutrons in the atom
In a centrifugal pump casing, the flow of water leaving the impeller, is___________________?
(A) rectilinear flow
(B) radial flow
(C) free vortex motion
(D) forced vortex
(D) none of the above
For very high discharge at low pressure such as for flood control and irrigation applications, following type of pump is preferred_________________?
(A) centrifugal
(B) axial flow
(C) reciprocating
(D) mixed flow
(D) none of the above
High specific speed of a pump implies it is_____________________?
(A) centrifugal pump
(B) mixed flow pump
(C) axial flow pump
(D) any one of the above
(D) none of the above
Low specific speed of turbine implies it is__________________?
(A) propeller turbine
(B) Francis turbine
(C) impulse turbine
(D) any one of the above
(D) none of the above
Runaway speed of a hydraulic turbine is_________________?
(A) full load speed
(B) the speed at which turbine runner will be damaged
(C) the speed if the turbine runner is allowed to revolve freely without load and with the wicket gates wide open
(D) the speed corresponding to maximum overload permissible
(D) none of the above.