Home→ Hydraulic Machines →According to fan laws, for fans having constant wheel diameter, the pressure varies________________?

Pressure intensifier increases the pressure in proportion to__________?
According to fan laws, at constant pressure, the speed capacity and power vary__________?
According to fan laws, for the fans having constant wheel diameters, the power demand varies__________?
According to fan laws, at constant weight of air or gas, the speed, capacity and pressure vary__________?
A hydraulic accumulator normally consists of__________?
Saving of work done and power by fitting an air vessel to double acting reciprocating pump is of the order of__________?
Puck up the wrong statement about centrifugal pump__________?
Hydraulic accumulator is used for__________?
A hydraulic intensifier normally consists of __________?
Maximum impulse will be developed in hydraulic ram when __________?
According to fan laws, at constant speed and capacity, the pressure and power vary__________?
Air vessels in reciprocating pump are used to__________?
In axial flow fans and turbines, fluid enters and leaves as follows__________?
The angle of taper on draft tube is A. greater than 15° B. greater than 8° C. greater than 5° D. less than 8° E. less than 3°.__________?
Reaction turbines are used for__________?
The flow rate in gear pump__________?
Guide angle as per the aerofoil theory of Kaplan turbine blade design is defined as the angle between__________?
Casting of a centrifugal pump is designed so as to minimize__________?
High specific speed of turbine implies it is__________?
The maximum number of jets generally employed in impulse turbine without jet interference is__________?
Any change in load is adjusted by adjusting following parameter on turbine__________?
Indicator diagram of a reciprocating pump is a graph between__________?
Medium specific speed of a pump implies it is__________?
Motion of a liquid in a volute casing of a centrifugal pump is an example of__________?
The horse power required in above case will be__________?
For small discharge at high pressure, following pump is preferred__________?
Low specific speed of a pump implies it is__________?
In a centrifugal pump, the liquid enters the pump__________?
In centrifugal pumps, maximum efficiency is obtained when the blades are__________?
The optimum value of vane exit angle for a centrifugal pump impeller is__________?
If a pump is handling water and is discharging a certain flow Q at a constant total dynamic head requiring a definite B.H.P., the same pump when handling a liquid of specific gravity 0.75 and viscosity nearly same as of water would discharge__________?
When a piping system is made up primarily of friction head and very little of vertical lift, then pump characteristics should be__________?
The efficiency of a centrifugal pump is maximum when its blades are__________?
Reciprocating pumps are no more to be seen in industrial applications (in comparison to centrifugal pumps) because of__________?
In a centrifugal pump casing, the flow of water leaving the__________?
Head developed by a centrifugal pump depends on__________?
Axial flow pump is started with its delivery valve__________?
One horsepower is equal to__________?
In a single casing, multistage pump running at constant speed, the capacity rating is to be slightly lowered. It can be done by__________?
Multistage centrifugal pumps are used to obtain__________?
When a piping system is made up primarily of vertical lift and very little pipe friction, the pump characteristics should be __________?
Centrifugal pump is started with its delivery valve __________?
For starting an axial flow pump, its delivery valve should be__________?

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
E. none of the above

Correct Answer: square of fan speed ✔

Last Updated: January 24, 2019