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Mechanical Engineering Objective Questions { Hydraulic Machines }



120. 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

121. According to fan laws, for the fans having constant wheel diameters, the power demand varies
A.Directly as fan speed
B.Square of fan speed
C.Cube of fan speed
D.Square root of fan speed

122. According to fan laws, at constant speed and capacity, the pressure and power vary
A.Directly as the air or gas density
B.Inversely as square root of density
C.Inversely as density
D.As square of density

123. According to fan laws, at constant pressure, the speed capacity and power vary
A.Directly as the air or gas density
B.Inversely as square root of density
C.Inversely as density
D.As square of density

124. According to fan laws, at constant weight of air or gas, the speed, capacity and pressure vary
A.Directly as the air or gas density
B.Inversely as square root of density
C.Inversely as density
D.As square of density

125. Capacity of hydraulic accumulator is generally specified as
A.Quantity of liquid accumulated
B.Height raising capability of accumulator
C.Maximum pressure developed
D.Maximum energy stored

126. 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

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