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Hydraulic Machines

Which place in hydraulic turbine is most susceptible for cavitation __________________?

August 15, 2021January 23, 2019 by QuizMaster
Which place in hydraulic turbine is most susceptible for cavitation __________________?

A. inlet of draft rube
B. blade inlet
C. guide blade
D. penstock
E. draft tube exit

Categories Hydraulic Machines

According to fan laws, for fans having constant wheel diameter, the air or gas capacity varies______________________?

August 15, 2021January 23, 2019 by QuizMaster
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
E. none of the above

Categories Hydraulic Machines

Saving of work done and power by fitting an air vessel to single acting reciprocating pump is of the order of__________________?

August 15, 2021January 23, 2019 by QuizMaster
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%
E. 91.6%.

Categories Hydraulic Machines

According to fan laws, for fans having constant wheel diameter, the pressure varies________________?

August 15, 2021January 23, 2019 by QuizMaster
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

Categories Hydraulic Machines

Pressure intensifier increases the pressure in proportion to____________________?

August 15, 2021January 23, 2019 by QuizMaster
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
E. fourth power of ratio of diameters

Categories Hydraulic Machines

According to fan laws, at constant pressure, the speed capacity and power vary_________________?

August 15, 2021January 23, 2019 by QuizMaster
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
E. as square root of density

Categories Hydraulic Machines

According to fan laws, for the fans having constant wheel diameters, the power demand varies_______________?

August 15, 2021January 23, 2019 by QuizMaster
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
E. none of the above

Categories Hydraulic Machines

According to fan laws, at constant weight of air or gas, the speed, capacity and pressure vary________________?

August 15, 2021January 23, 2019 by QuizMaster
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
E. as square root of density

Categories Hydraulic Machines

A hydraulic accumulator normally consists of________________?

August 15, 2021January 23, 2019 by QuizMaster
A hydraulic accumulator normally consists of________________?

A. two cylinders, two rams and a storage device
B. a cylinder and a ram
C. two co-axial rams and two cylinders
D. a cylinder, a piston, storage tank and control valve
E. special type of pump with storage device and a pressure regulator

Categories Hydraulic Machines

Saving of work done and power by fitting an air vessel to double acting reciprocating pump is of the order of_______________?

August 15, 2021January 23, 2019 by QuizMaster
Saving of work done and power by fitting an air vessel to double acting reciprocating pump is of the order of_______________?

A. 39.2%
B. 49.2%
C. 68.8%
D. 84.8%
E. 91.6%.

Categories Hydraulic Machines
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